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Rossi A, Lagravère-Vich M, Heo G, Major PW, El-Bialy T. An evaluation of root resorption associated with the use of photobiomodulation during orthodontic treatment with clear aligners: a retrospective cohort pilot study. Angle Orthod 2024; 94:294-302. [PMID: 38412960 PMCID: PMC11050451 DOI: 10.2319/081823-567.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 01/01/2024] [Indexed: 02/29/2024] Open
Abstract
OBJECTIVES To evaluate the change in tooth root volume using cone-beam computed tomography (CBCT) in a group of patients treated concurrently with clear aligners and an adjunctive photobiomodulation (PBM) device. MATERIALS AND METHODS This retrospective cohort pilot study included the records of 32 consecutively treated clear aligner patients (23 female, 9 male) from the private practice of one orthodontist. The PBM group (n = 16) used the device once per day for 5 minutes per arch and was compared with a matched control group (n = 16). A semiautomated segmentation technique was used to obtain tooth volume of anterior teeth from CBCT imaging prior to (T0) and during or immediately following (T1) orthodontic treatment with clear aligners. The change in root volume between time points was assessed. RESULTS There was no statistically significant difference between the pre- and posttreatment root volumes of maxillary and mandibular anterior teeth, regardless of which intervention group the patient belonged to (P > .05). There was also no difference in the mean percentage change in root volume between clear aligner patients in this study who were treated with the PBM device compared with a matched control group (P > .05). CONCLUSIONS Clear aligner patients in this study who changed their aligners every 3 to 5 days and used adjunctive photobiomodulation therapy did not experience clinically relevant orthodontically induced external root resorption. Due to the small sample size and measurement error in the root segmentation process, the results should be interpreted with caution.
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Li N, Yang L, Yang Q, Wang H, Xu X, Wang T. Long-term follow-up after the treatment of impacted canines in the maxilla causing severe root resorption of the lateral incisors: two case reports. BMC Oral Health 2024; 24:482. [PMID: 38643143 PMCID: PMC11032590 DOI: 10.1186/s12903-024-04275-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 04/18/2024] [Indexed: 04/22/2024] Open
Abstract
BACKGROUND Root resorption of adjacent teeth due to impacted canines is common, and orthodontic treatment often leads to secondary resorption or even loss of adjacent roots. Clinical reports of long-term stability after treatment are rare. CASE PRESENTATION This study reports two cases of maxillary impacted canines resulting in severe root resorption of the adjacent lateral incisors. Surgical exposure, orthodontic retraction, and alignment of the impacted canines were successful in both cases, and the resorbed lateral incisors were stable with no significant loosening and normal pulp vitality after treatment and at the 5- and 10-year follow-up appointments. CONCLUSIONS Light orthodontic force may be used to move adjacent teeth with root resorption due to tooth obstruction. The path and direction in which the teeth are moved must be specifically designed so that the adjacent roots are not resorbed and so long-term stability can be achieved.
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Affiliation(s)
- Ning Li
- Department of Orthodontics, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Shandong, Yantai, 264000, China
- Yantai Engineering Research Center for Digital Technology of Stomatology, Shandong, Yantai, 264000, China
- Characteristic Laboratories of Colleges and Universities in Shandong Province for Digital Stomatology, Shandong, Yantai, 264000, China
| | - Liu Yang
- Department of Prosthodontics, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Shandong, Yantai, 264000, China
| | - Qian Yang
- Binzhou Medical University, Shandong, Yantai, 264000, China
| | - Hongning Wang
- Department of Orthodontics, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Shandong, Yantai, 264000, China
| | - Xiaolin Xu
- Department of Orthodontics, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Shandong, Yantai, 264000, China
| | - Tiejun Wang
- Department of Orthodontics, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Shandong, Yantai, 264000, China.
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Buchi-Velazquez A, Escobar-Torres D, Veloso V, Ferraro N. Clinical and radiographic characterization of external root resorption. Medwave 2024; 24:e2780. [PMID: 38574291 DOI: 10.5867/medwave.2024.03.2780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024] Open
Abstract
Introduction The following bibliographic review was carried out with the purpose of recognizing the clinical and radiographic characteristics that must be considered in the diagnosis of external root resorption, including treatments. Methods A bibliographic search was carried out in PubMed/Medline, Cochrane Library and Google Scholar databases under the term "external root resorption", from 2010 to 2022 in Spanish and English. Experimental studies and bibliographic reviews were selected, and finally 17 articles were included. Results The results obtained indicated that each type of resorption presents specific clinical characteristics that differentiate them, these are: for external inflammatory resorption a negative pulp vitality; for replacement external resorption the absence of mobility and metallic percussion; for cervical external resorption a pink coloration of the crown; superficial external resorption does not present any type of clinical symptoms and transient apical collapse presents a transient change in color. Conclusion External root resorptions require accurate and early diagnosis. A clinical examination should be performed with emphasis on the following: probing, coloration, mobility, and vitality tests.
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Affiliation(s)
- Agustina Buchi-Velazquez
- Escuela de Odontología, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Daniela Escobar-Torres
- Escuela de Odontología, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Valentina Veloso
- Escuela de Odontología, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Nicolás Ferraro
- Escuela de Odontología, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
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Prasanna Arvind TR, Ramasamy N, Subramanian AK, Selvaraj A, Siva S. Three-dimensional volumetric evaluation of root resorption in maxillary anteriors following en-masse retraction with varying force vectors - a randomized control trial. Orthod Craniofac Res 2024; 27:211-219. [PMID: 37553952 DOI: 10.1111/ocr.12704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/10/2023] [Accepted: 07/31/2023] [Indexed: 08/10/2023]
Abstract
BACKGROUND Root resorption in orthodontics is associated with direction and magnitude of force application as primary etiological factors. Well-controlled trials that utilize three-dimensional segmentation to detect volumetric changes in tooth structure are required to assess the quantitative nature of root resorption. OBJECTIVE To assess the severity of root resorption (RR) during retraction of maxillary anteriors with three different force vectors (with and without skeletal anchorage) via cone-beam computed tomography (CBCT) superimpositions. TRIAL DESIGN Three-arm parallel randomized clinical trial (RCT). MATERIALS AND METHODS Forty-two (16 males, 26 females) patients, (17-28 years), in permanent dentition with bimaxillary protrusion were randomly allocated to three groups of 14 patients each using block randomization (1:1:1 ratio) and allocation concealment. En-masse anterior retraction post first premolar extractions was carried out with modified force vectors in the three groups based on anchorage type [Molar, Mini-implant and Infrazygomatic crest (IZC) bone screws]. Volumetric root loss and linear dimensional changes were blindly assessed on initial (T0) and final (T1, end of space closure) CBCT scans. Normality distribution of values was done using Shapiro-Wilk's test. ANOVA and Post-hoc Tukey HSD test were done to compare measurements between groups at significance levels (P < .05). RESULTS Forty patients were analysed (14, 14, and 12 in three groups). Significant volumetric loss was noted in all groups. Central incisors demonstrated a significant reduction in IZC group (81.5 ± 21.1 mm3 ) compared to conventional (50.1 ± 26.5 mm3 ) and mini-implant groups (76.1 ± 27.6 mm3 ). Canines demonstrated a significant reduction in mini-implant group (108.9 ± 33.9 mm3 ) compared to conventional (68.8 ± 42.5 mm3 ) and IZC groups (103.1 ± 29.1 mm3 ). Regarding linear parameters, central incisors and canines revealed significant root length reduction in both skeletal anchorage groups. Lateral incisors showed no significant changes between groups. CONCLUSIONS Intrusive force vectors generated during skeletally anchored retraction can predispose anteriors to an increased risk of resorption. Greater loss of root volume was noted in the centrals and canines when retracted with skeletal anchorage. LIMITATIONS Small sample size and variations during CBCT acquisition. HARMS Low-dose CBCT scans were taken at T0 and T1 treatment intervals.
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Affiliation(s)
- T R Prasanna Arvind
- Department of Orthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - N Ramasamy
- Department of Orthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - A K Subramanian
- Department of Orthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - A Selvaraj
- Department of Orthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - S Siva
- Department of Orthodontics, SRM Dental College, SRM University, Chennai, India
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Ishizuka K, Kato C, Fujita A, Misawa-Omori E, Ono T. Factors influencing root resorption in retained mandibular second deciduous molars with congenital absence of second premolars: a cross-sectional study. Prog Orthod 2024; 25:14. [PMID: 38556605 PMCID: PMC10982280 DOI: 10.1186/s40510-024-00512-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/30/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND There are currently no studies that quantitatively compare the relationship of root resorption to the patient's systemic history or craniofacial and intraoral morphology, especially in relation to possible host factors. Thus, this study aimed to clarify the factors associated with root resorption in retained mandibular second deciduous molars with the congenital absence of second premolars and predict the prognosis of retained mandibular second deciduous molars. METHODS A cohort of 5547 patients who visited the orthodontic clinic at Tokyo Medical and Dental University Dental Hospital between 2013 and 2022 was screened. Lateral cephalometric radiographs, panoramic radiographs, upper and lower dental models, and orthodontic treatment questionnaires were used as reference materials to apply the inclusion and exclusion criteria. Ultimately, 111 patients were included in the analyses. The patients were divided into two groups based on the root resorption levels of the retained mandibular second deciduous molars. Those with less root resorption were classified under the good condition (GC) group, whereas those with more root resorption were classified under the poor condition (PC) group. Demographic, clinical, and cephalometric parameters were compared between the groups. A multivariate logistic regression model was used to predict the probability of root resorption. RESULTS The prevalence of congenitally missing mandibular second premolars with persistent mandibular second deciduous molars was 2.0%. In a total of 111 patients, eighty-three teeth (53.2%) were classified into the GC group, whereas 73 teeth (46.8%) were classified into the PC group. The Frankfort-mandibular plane angle (FMA) [odds ratio (OR): 0.87], Frankfort-mandibular incisor angle (FMIA) (OR: 0.93), overbite (OR: 1.38), adjacent interdental space (OR: 1.46), distance from occlusal plane (OR: 0.80), and caries treatment (OR: 7.05) were significantly associated with the root resorption of the retained mandibular second deciduous molars. CONCLUSIONS Our findings suggest that skeletal morphology, oral morphological patterns, and history contribute to root resorption in retained mandibular second deciduous teeth with congenital absence of subsequent permanent teeth.
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Affiliation(s)
- Keita Ishizuka
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Chiho Kato
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-8510, Japan.
| | - Akiyo Fujita
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Eri Misawa-Omori
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Takashi Ono
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima Bunkyo-ku, Tokyo, 113-8510, Japan
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Sun W, Yang Y, Liu C, Li H, Lei L. Influence of alveolar bone thickness and bucco-palatal inclination on root resorption of lateral incisors in unilateral maxillary impacted canines: a retrospective observational study. BMC Oral Health 2024; 24:301. [PMID: 38431628 PMCID: PMC10909261 DOI: 10.1186/s12903-024-04076-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/26/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND This study aimed to investigate the potential associations between alveolar bone thickness, bucco-palatal inclination of maxillary lateral incisors, and lateral incisor root resorption in patients with unilateral maxillary impacted canines (UMICs). METHODS A total of three hundred and five subjects (120 males, 185 females; mean age, 16.39 years; standard deviation, 4.04) with UMICs were included. Canine position and root resorption were assessed using CBCT. UMICs were divided into palatal, buccal and mid-alveolus groups (PICs, BICs and MAICs), with 117, 137 and 51 subjects, respectively. Alveolar bone thickness and bucco-palatal inclination of lateral incisors were measured using the Dolphin software. RESULTS The prevalence of lateral incisor root resorption was significantly lower in the BICs (13.9%) than MAICs (29.4%) and PICs (29.1%). Alveolar bone thickness of the apical area was smaller in UMICs with lateral incisor root resorption than no resorption in both PICs (8.33 ± 1.64 vs 10.53 ± 2.55 mm) and BICs (8.94 ± 1.85 vs 10.76 ± 2.28 mm). Furthermore, lateral incisors on the impacted side were more buccally inclined in PICs with lateral incisor root resorption than no resorption, while in both BICs and MAICs, there was no statistical difference between lateral incisor root resorption than no resorption. Moreover, alveolar bone thickness of the apical area, rather than bucco-palatal inclination of lateral incisors, was significantly correlated with lateral incisor root resorption both in PICs and BICs. CONCLUSIONS Lateral incisor root resorption is less common in BICs. Thinner alveolar bone thickness at the apical area of lateral incisors can be considered as a potential risk factor for lateral incisor root resorption in UMICs.
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Affiliation(s)
- Weiman Sun
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yuanyuan Yang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Chenghuan Liu
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Houxuan Li
- Department of Periodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Lang Lei
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, #30 Zhongyang Road, Nanjing, 210018, China.
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Tan JHS, Yazid F, Kasim NA, Ariffin SHZ, Wahab RMA. A newly developed kit for dental apical root resorption detection: efficacy and acceptability. BMC Oral Health 2024; 24:298. [PMID: 38431618 PMCID: PMC10909286 DOI: 10.1186/s12903-024-04056-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/21/2024] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVES To determine the efficacy of a newly developed kit in dentine sialophosphoprotein (DSPP) detection and compare it with enzyme-linked immunosorbent assay (ELISA). User acceptance was also determined. MATERIALS AND METHODS This cross-sectional study consisted of 45 subjects who were divided into 3 groups based on the severity of root resorption using radiographs: normal (RO), mild (RM), and severe (RS). DSPP in GCF samples was analyzed using both methods. Questionnaires were distributed to 30 orthodontists to evaluate future user acceptance. RESULTS The sensitivity and specificity of the kit were 0.98 and 0.8 respectively. The DSPP concentrations measured using ELISA were the highest in the RS group (6.33 ± 0.85 ng/mL) followed by RM group (3.77 ± 0.36 ng/mL) and the RO group had the lowest concentration (2.23 ± 0.55 ng/mL). The new kit portrayed similar results as the ELISA, the optical density (OD) values were the highest in the RS group (0.62 ± 0.10) followed by RM group (0.33 ± 0.03) and the RO group (0.19 ± 0.06). The differences among all the groups were statistically significant (p < 0.05) for both methods. The Pearson correlation coefficient showed a statistically significant (p < 0.001) strong and positive correlation between DSPP concentrations and OD values. CONCLUSIONS The new kit was validated to detect the colour intensities of different severity of root resorptions. Most of the responses to the survey were positive towards the new kit for being a safer and simpler method to detect apical root resorption.
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Affiliation(s)
- Jun Hong Steven Tan
- Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, 50300, Malaysia
| | - Farinawati Yazid
- Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, 50300, Malaysia
| | - Nurfathiha Abu Kasim
- Halvec Laboratories Sdn. Bhd, G-E-4, Enterprise 4, Technology Park Malaysia, Bukit Jalil, Kuala Lumpur, 57000, GF, Malaysia
| | - Shahrul Hisham Zainal Ariffin
- Department of Biosciences and Biotechnology, Faculty of Science, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia
| | - Rohaya Megat Abdul Wahab
- Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, 50300, Malaysia.
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Nakamura T, Hotokezaka Y, Karadeniz C, Hotokezaka H, Ueda-Ichinose Y, Nishioka-Sakamoto K, Yoshida N. Early-stage periodontal ligament compression predicts orthodontically induced root resorption in rats. Angle Orthod 2024; 94:240-246. [PMID: 37963565 PMCID: PMC10893921 DOI: 10.2319/040223-233.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 10/01/2023] [Indexed: 11/16/2023] Open
Abstract
OBJECTIVES To determine the effect of orthodontic pressure on periodontal ligament (PDL) compression in rats and assess correlation between PDL compression and orthodontically induced root resorption (OIRR). MATERIALS AND METHODS Eight female Wistar rats aged 10 weeks underwent surgery to place 2 mini-screws at the center of the palatal plate. 25 cN coil springs connecting the maxillary first molars and mini-screws were applied bilaterally to generate mesial force. Maxillary first molars were assigned to undergo either bodily or tipping movements. Micro-computed tomography (μCT) scans were taken on days 0, 3, 7, and 14, and histological sections were taken on day 14. OIRR was measured from histological sections, and the corresponding PDL compression ratio was quantified using μCT images. RESULTS The PDL was compressed by approximately 76% in tipping movement and 55% in bodily movement after 3 days, and by approximately 47% in bodily and tipping movements after 7 days of orthodontic force application. The extent of OIRR in tipping movement was significantly greater than that in bodily movement. A strong positive correlation between OIRR and PDL compression ratio was observed on day 3; however, no correlation was observed on day 7. CONCLUSIONS A strong correlation between PDL compression ratio and OIRR was observed at an early stage after the application of orthodontic force regardless of the tooth movement type (bodily or tipping), implying the importance of early stage PDL compression in the induction of OIRR.
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Zheng W, Lu X, Chen G, Shen Y, Huang X, Peng J, Wang J, Yin Y, Song W, Xie M, Yu S, Chen L. The osteoclastic activity in apical distal region of molar mesial roots affects orthodontic tooth movement and root resorption in rats. Int J Oral Sci 2024; 16:19. [PMID: 38418457 PMCID: PMC10901898 DOI: 10.1038/s41368-024-00284-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 01/21/2024] [Indexed: 03/01/2024] Open
Abstract
The utilization of optimal orthodontic force is crucial to prevent undesirable side effects and ensure efficient tooth movement during orthodontic treatment. However, the sensitivity of existing detection techniques is not sufficient, and the criteria for evaluating optimal force have not been yet established. Here, by employing 3D finite element analysis methodology, we found that the apical distal region (A-D region) of mesial roots is particularly sensitive to orthodontic force in rats. Tartrate-resistant acidic phosphatase (TRAP)-positive osteoclasts began accumulating in the A-D region under the force of 40 grams (g), leading to alveolar bone resorption and tooth movement. When the force reached 80 g, TRAP-positive osteoclasts started appearing on the root surface in the A-D region. Additionally, micro-computed tomography revealed a significant root resorption at 80 g. Notably, the A-D region was identified as a major contributor to whole root resorption. It was determined that 40 g is the minimum effective force for tooth movement with minimal side effects according to the analysis of tooth movement, inclination, and hyalinization. These findings suggest that the A-D region with its changes on the root surface is an important consideration and sensitive indicator when evaluating orthodontic forces for a rat model. Collectively, our investigations into this region would aid in offering valuable implications for preventing and minimizing root resorption during patients' orthodontic treatment.
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Affiliation(s)
- Wenhao Zheng
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Xiaofeng Lu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Guangjin Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Yufeng Shen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
- Department of Stomatology, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Xiaofei Huang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Jinfeng Peng
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Jiajia Wang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Ying Yin
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Wencheng Song
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Mengru Xie
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China
| | - Shaoling Yu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China.
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, China.
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Khosravifard N, Vadiati Saberi B, Khosravifard A, Hendi A, Shadi K, Mihandoust S, Yousefi Z, Mortezaei T, Ghaffari ME. Introducing a new auto edge detection technique capable of revealing cervical root resorption in CBCT scans with pronounced metallic artifacts. Sci Rep 2024; 14:4245. [PMID: 38379025 PMCID: PMC10879123 DOI: 10.1038/s41598-024-54974-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/19/2024] [Indexed: 02/22/2024] Open
Abstract
Cervical resorption is a serious threat to the longevity of the teeth. In this study, the Canny edge-detection algorithm was applied on CBCT images to compare the accuracy of original and Canny views for diagnosing cervical resorption in endodontically treated teeth. Intracanal metallic posts were inserted in 60 extracted teeth being randomly divided into three groups: control, 0.5 mm, and 1 mm cervical resorption. CBCT scans of the teeth were presented to three observers in both original and Canny formats with the accuracy being determined by receiver operating characteristic (ROC) analysis. The DeLong test was used for paired comparisons with the significance level set at 0.05. The highest accuracy belonged to Canny images in 1 mm resorption, followed by Canny images in 0.5 mm resorption, original images in 1 mm resorption, and original images in 0.5 mm resorption, respectively. The Canny images were significantly more accurate in the diagnosis of 0.5 mm (p < 0.001) and 1 mm (p = 0.009) resorption. Application of the Canny edge-detection algorithm could be suggested as a new technique for facilitating the diagnosis of cervical resorption in teeth that are negatively affected by metallic artifacts.
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Affiliation(s)
- Negar Khosravifard
- Department of Oral and Maxillofacial Radiology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
| | - Bardia Vadiati Saberi
- Department of Periodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Amir Khosravifard
- Department of Mechanical Engineering, Shiraz University, Shiraz, Iran
| | - Amirreza Hendi
- Department of Dental Prosthesis, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Kimia Shadi
- Department of Oral and Maxillofacial Radiology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Sanaz Mihandoust
- Department of Oral and Maxillofacial Radiology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Zahra Yousefi
- Department of Oral and Maxillofacial Radiology, Dental Caries Prevention Research Center, School of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Tahereh Mortezaei
- Department of Oral and Maxillofacial Radiology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
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Reduwan NH, Abdul Aziz AA, Mohd Razi R, Abdullah ERMF, Mazloom Nezhad SM, Gohain M, Ibrahim N. Application of deep learning and feature selection technique on external root resorption identification on CBCT images. BMC Oral Health 2024; 24:252. [PMID: 38373931 PMCID: PMC10875886 DOI: 10.1186/s12903-024-03910-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/17/2024] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Artificial intelligence has been proven to improve the identification of various maxillofacial lesions. The aim of the current study is two-fold: to assess the performance of four deep learning models (DLM) in external root resorption (ERR) identification and to assess the effect of combining feature selection technique (FST) with DLM on their ability in ERR identification. METHODS External root resorption was simulated on 88 extracted premolar teeth using tungsten bur in different depths (0.5 mm, 1 mm, and 2 mm). All teeth were scanned using a Cone beam CT (Carestream Dental, Atlanta, GA). Afterward, a training (70%), validation (10%), and test (20%) dataset were established. The performance of four DLMs including Random Forest (RF) + Visual Geometry Group 16 (VGG), RF + EfficienNetB4 (EFNET), Support Vector Machine (SVM) + VGG, and SVM + EFNET) and four hybrid models (DLM + FST: (i) FS + RF + VGG, (ii) FS + RF + EFNET, (iii) FS + SVM + VGG and (iv) FS + SVM + EFNET) was compared. Five performance parameters were assessed: classification accuracy, F1-score, precision, specificity, and error rate. FST algorithms (Boruta and Recursive Feature Selection) were combined with the DLMs to assess their performance. RESULTS RF + VGG exhibited the highest performance in identifying ERR, followed by the other tested models. Similarly, FST combined with RF + VGG outperformed other models with classification accuracy, F1-score, precision, and specificity of 81.9%, weighted accuracy of 83%, and area under the curve (AUC) of 96%. Kruskal Wallis test revealed a significant difference (p = 0.008) in the prediction accuracy among the eight DLMs. CONCLUSION In general, all DLMs have similar performance on ERR identification. However, the performance can be improved by combining FST with DLMs.
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Affiliation(s)
- Nor Hidayah Reduwan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
- Centre of Oral and Maxillofacial Diagnostic and Medicine Studies, Faculty of Dentistry, University Teknologi MARA, Sungai Buloh, 47000, Malaysia
| | - Azwatee Abdul Abdul Aziz
- Department of Restorative Dentistry, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Roziana Mohd Razi
- Department of Pediatric Dentistry and Orthodontic, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Erma Rahayu Mohd Faizal Abdullah
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Seyed Matin Mazloom Nezhad
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Meghna Gohain
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Norliza Ibrahim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
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Al-Worafi NA, Zheng B, Al-Warafi LA, Alyafrusee ES, Alsomairi MAA, Liu Y. Impact of molar teeth distalization by clear aligners on maxillary alveolar bone thickness and root resorption: a three‑dimensional study. BMC Oral Health 2024; 24:237. [PMID: 38355506 PMCID: PMC10868040 DOI: 10.1186/s12903-024-03987-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/05/2024] [Indexed: 02/16/2024] Open
Abstract
OBJECTIVE This study aimed to evaluate the impact of molar teeth distalization movement by clear aligners on changes in the alveolar bone thickness and orthodontically induced inflammatory root resorption (OIIRR) in maxillary molars using conebeam computed tomography (CBCT). MATERIALS AND METHODS Three-dimensional CBCT scans of 35 adult patients (one hundred forty maxillary molars) with pre-designed selection criteria and a mean age of 24.4 ± 7.1 years were included. The measured parameters, including alveolar bone thickness for maxillary molars and root resorption (OIIRR), were analyzed using pre-and post-treatment CBCT (T0 and T1, respectively) with Invivo 6.0 software. RESULT Post-treatment, relevant statistically significant changes included deposition of bone in the average palatal surface of the 1st molars. The reduction of bone was seen in the average buccal surface of the first molars and both surfaces of the second molars. Regarding root length after treatment, the average maxillary 1st molar roots showed significant OIIRR (p < 0.001). CONCLUSION Clear aligner treatment could effectively reduce the incidence of alveolar bone thickness reduction and OIIRR in treating Class II malocclusions compared to conventional braces, as shown in previous studies. This research will aid in fully grasping the benefits of clear aligners.
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Affiliation(s)
- Naseem Ali Al-Worafi
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University, Clinical Medical Research Center of Orthodontic Disease, Shenyang 110002, P.R. China
| | - Bowen Zheng
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University, Clinical Medical Research Center of Orthodontic Disease, Shenyang 110002, P.R. China
| | - Leena Ali Al-Warafi
- Department of Orthodontics, Faculty of Dentistry, First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China
| | - Enas Senan Alyafrusee
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University, Clinical Medical Research Center of Orthodontic Disease, Shenyang 110002, P.R. China
| | - Majedh Abdo Ali Alsomairi
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University, Clinical Medical Research Center of Orthodontic Disease, Shenyang 110002, P.R. China
| | - Yi Liu
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University, Clinical Medical Research Center of Orthodontic Disease, Shenyang 110002, P.R. China.
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Machado ICP, Morais MO, Bicalho ALP, Ferrari PHP, Bueno JM, Junqueira JLC, Soares MQS. Prevalence and Characterization of External Cervical Resorption Using Cone Beam Computed Tomography. J Endod 2024; 50:164-172.e1. [PMID: 37977218 DOI: 10.1016/j.joen.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/05/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
INTRODUCTION The aim of this study was to assess the prevalence of external cervical resorption (ECR) and characterize the cases of ECR using cone beam computed tomography (CBCT). METHODS High-resolution CBCT scans of 6216 patients (2280 males and 3936 females), consecutively acquired during the period July 2021 to March 2022, were analyzed. Identified cases of ECR were characterized by 3 evaluators regarding lesion height, circumferential spread, portal of entry proximity to root canal, stage, location, and width. RESULTS In a total of 38 patients and 40 teeth, ECR cases demonstrated an incidence of 0.61%. The median age of the patients was 39 years. Prevalence of ERC was 0.78% among males and 0.50% among females. The most affected teeth were the maxillary incisors and canines. The most frequent characteristics of the lesion were: extension up to the cervical third (47.5%), more than 270° circumferential spread (42.55%), probable pulpal involvement (57.5%), progressive stage (65%), supracrestal (52.1%) and mesial (34.7%) localization of >1 mm in size (52.1%) portals of entry. Cases with greater longitudinal involvement also showed greater circumferential progression (P = .008). There was no association between portal of entry location and bone crest or ECR reparative phase (P = .42). Inter-rater agreement ranged from good to very good. No association between portal of entry and ECR progression was observed. CONCLUSIONS ECR showed low prevalence in the Brazilian population, affecting mostly anterior maxillary teeth of patients within a wide age range. CBCT allowed characterization of ECR lesions with good interobserver agreement.
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Affiliation(s)
| | - Marilia Oliveira Morais
- Department of Oral Radiology, Centro Integrado de Radiodontologia CIRO, Goiânia, Goiás, Brazil
| | | | | | - Juliano Martins Bueno
- Oral Radiology Division, São Leopoldo Mandic Research Institute, Campinas, São Paulo, Brazil; Department of Oral Radiology, Centro Integrado de Radiodontologia CIRO, Goiânia, Goiás, Brazil
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Botticelli S, Byriel T, Stoustrup P, Cattaneo PM, Küseler A. Apical incisor root resorption due to ectopic maxillary canine eruption: Association with time of diagnosis and type of intervention in a retrospective population-based cohort study. Orthod Craniofac Res 2024; 27:165-173. [PMID: 37565287 DOI: 10.1111/ocr.12703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVES The primary aim was to study upper incisor severe apical root resorption (RR) related to ectopic canine eruption and its association with timing of diagnosis and type of intervention conducted. The secondary aim was to correlate resorption with other dental anomalies. MATERIALS AND METHODS Digital journals and radiographic material of all ectopic maxillary canines registered in 2012 in the regional public paediatric dental clinics in the Council of Aarhus were inspected retrospectively. Data related to 10 variables were retrieved. Post-treatment radiographs were used for evaluation of incisor RR. RESULTS A total of 260 ectopic maxillary canines were diagnosed in 2012. The majority were found in the 9-13-year-old age group (0.8% prevalence within the total population). In all, 244 canines were assessed for eligibility and 181 had adequate final radiographs for evaluation of RR. Among ectopic maxillary canines, 9.4% caused severe incisor RR to neighbouring teeth. Timely palpation for canine eruption significantly reduced the odds for upper incisor resorption by 80%. Multiple regression showed that when the permanent canine cannot be palpated and the deciduous has been extracted, delaying the first X-rays was associated with a 38% odds ratio increase for RR for each year of delay after the age of 10 years. No significant associations were found between incisor RR and intervention conducted or other dental anomalies. CONCLUSION Palpation of erupting maxillary canines is crucial for timely diagnosis of ectopic eruption and initiation of treatment to avoid RR. If the canine cannot be palpated at 10 years of age, radiographic examination is highly recommendable.
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Affiliation(s)
- Susanna Botticelli
- Section of Orthodontics, Aarhus University, Aarhus, Denmark
- Cleft Lip and Palate Department, Istitut for Kommunikation og Handikap, Aarhus, Denmark
| | - Tina Byriel
- Section of Orthodontics, Aarhus University, Aarhus, Denmark
- Orthodontic Municipality Clinic FKO Syddjurs Kommune, Rønde, Denmark
| | - Peter Stoustrup
- Section of Orthodontics, Aarhus University, Aarhus, Denmark
- Orthodontic Municipality Clinic Aars, Aars, Denmark
| | - Paolo Maria Cattaneo
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Annelise Küseler
- Section of Orthodontics, Aarhus University, Aarhus, Denmark
- Cleft Lip and Palate Department, Istitut for Kommunikation og Handikap, Aarhus, Denmark
- Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark
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Bhatia NK, Chugh VK, Shankar SP, Vinay A P R, Singh S, Moungkhom P, Sardana R. Alignment efficiency and three-dimensional assessment of root resorption after alignment with conventional and copper-nickel-titanium archwires: A randomized controlled trial. Dental Press J Orthod 2024; 28:e2323177. [PMID: 38198391 PMCID: PMC10773444 DOI: 10.1590/2177-6709.28.6.e2323177.oar] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/23/2023] [Indexed: 01/12/2024] Open
Abstract
OBJECTIVE To compare alignment efficiency and root resorption between nickel-titanium (NiTi) and copper-nickel-titanium (CuNiTi) archwires after complete alignment in mandibular anterior region. METHODS In this two-arm parallel single-blind randomized controlled trial, forty-four patients with Class I malocclusion with mandibular anterior crowding were recruited form orthodontic clinic of All India Institute of Medical Sciences (Jodhpur, India). Patients were randomly allocated into NiTi and CuNiTi groups, with a 1:1 allocation. Alignment was performed using 0.014-in, 0.016-in, 0.018-in, 0.019x0.025-in archwire sequence in the respective groups, which terminated in 0.019 x 0.025-in stainless-steel working archwire. The primary outcome was alignment efficiency, measured on study models from baseline (T0) to the first, second, third, fourth and fifth-month (T5). Secondary outcome was root resorption, measured from CBCT scans taken at T0 and T5. Mixed-factorial ANOVA was used to compare Little's Irregularity Index (LII). For assessing the proportion of patients with complete alignment at the end of each month, Kaplan-Meier survival curve was built and time to treatment completion was compared between groups using log rank test. Paired t-test was used to assess external apical root resorption (EARR) within groups, whereas independent t-test was used to evaluate LII and EARR between the groups. RESULTS Twenty-two patients were recruited in each group. One patient was lost to follow-up in the CuNiTi group. No statistically significant differences were observed in alignment efficiency between the groups (p>0.05). Intergroup comparison revealed that the changes in root measurement in three-dimensions were not statistically significant (p>0.05), except for mandibular right central incisor, which showed increased resorption at root apex in NiTi group (p<0.01). CONCLUSION The two alignment archwires showed similar rate of alignment at all time points. Root resorption measurement did not differ between the NiTi and CuNiTi groups, except for the mandibular right central incisor, which showed more resorption in NiTi group.
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Affiliation(s)
- Navleen Kaur Bhatia
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
| | - Vinay Kumar Chugh
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
| | - Sam Prasanth Shankar
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
| | - Ritvik Vinay A P
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
| | - Surjit Singh
- All India Institute of Medical Sciences, Department of Pharmacology (Jodhpur, Rajasthan, India)
| | - Priyawati Moungkhom
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
| | - Rinkle Sardana
- All India Institute of Medical Sciences, Department of Dentistry, Section of Orthodontics (Jodhpur, Rajasthan, India)
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Stoustrup P, Videbæk A, Wenzel A, Matzen LH. Will supplemental cone beam computed tomography change the treatment plan of impacted maxillary canines based on 2D radiography? A prospective clinical study. Eur J Orthod 2024; 46:cjad062. [PMID: 37934968 DOI: 10.1093/ejo/cjad062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
AIM To evaluate the impact of cone beam computed tomography (CBCT) on treatment planning for impacted maxillary canines; secondly, to identify CBCT factors influencing a change in the treatment plan; and thirdly, to assess 2D radiographic factors that can aid in selecting appropriate candidates for CBCT. MATERIAL AND METHODS Patients with impacted maxillary canines and an overlap of a neighboring tooth in 2D radiographs and the suspicion of root resorption were referred for CBCT examination. An initial treatment plan was based on 2D radiographs, and the final treatment plan was established after the CBCT examination. Logistic regression analyses and t-tests were performed to evaluate differences in radiographic findings between the groups with and without a change in treatment plan. RESULTS The study prospectively included 125 impacted canines, and 43 (34.4%) of them had a change in treatment plan after the CBCT examination. The most common change was a modification in the direction of cantilever traction (n = 28; 22.4%), while the least common was the change in decision to remove/keep the canine (n = 4; 3.2%). The size of the alpha and lateral angles had a significant impact on the decision to change the treatment plan. Other radiographic findings did not influence a change in treatment plan. CONCLUSIONS One-third of the canines had a change in treatment plan after supplemental CBCT examination. Canines with large alpha and lateral angles measured in the panoramic image were found to be significantly more likely to undergo changes in the initial direction of cantilever traction or changes to the canine extraction strategy following CBCT examination.
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Affiliation(s)
- Peter Stoustrup
- Section for Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Anja Videbæk
- Section for Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Ann Wenzel
- Section for Oral Radiology and Endodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Louise Hauge Matzen
- Section for Oral Radiology and Endodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
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Litchfield FE, Oster RA, Kau CH, Lamani E. External apical root resorption in African American orthodontic patients. Eur J Orthod 2024; 46:cjad059. [PMID: 37851998 PMCID: PMC10783150 DOI: 10.1093/ejo/cjad059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
OBJECTIVE External apical root resorption (EARR) is a side effect of orthodontic treatment that results in root shortening. However, this condition has yet to be evaluated in African Americans. The aim of this study was to determine the EARR prevalence within this ethnicity and investigate how patient and treatment-related factors contribute to root resorption. METHODS The records of 336 African Americans treated at the University of Alabama at Birmingham School of Dentistry Department of Orthodontics were retrospectively analyzed with Dolphin Imaging software. Pre-treatment and post-treatment panoramic radiographs were used to measure EARR. Resorption was recorded when final roots were at least 2 mm shorter after orthodontic treatment. Additionally, moderate and severe EARR was reported when 20% and 50% or more of the root structure was lost for any of the four maxillary incisors, respectively. The Pearson chi-square test was used to evaluate the associations of individual patient and treatment-related factors with EARR. RESULTS The prevalence of root resorption with 2 mm or greater of root structure loss was 51.8%. The prevalence of ≥ 20% EARR was 29.8%. Only one patient displayed severe resorption (0.3%). The associations between the patient-specific and treatment-specific variables and EARR were not statistically significant (P > .05). CONCLUSIONS More than half of the African American patients exhibit at least 2 mm of root resorption with orthodontic treatment. However, in this ethnicity, patient-related factors such as age, gender, dental malocclusion, and skeletal classifications, as well as treatment-related factors do not indicate a significant correlation with the risk of developing EARR.
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Affiliation(s)
- Frank E Litchfield
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Robert A Oster
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Chung How Kau
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ejvis Lamani
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
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Noori RM, Yassir YA. Effectiveness of tubular coaxial nickel-titanium and copper nickel-titanium orthodontic aligning archwires: A randomized clinical trial. Int Orthod 2023; 21:100812. [PMID: 37776695 DOI: 10.1016/j.ortho.2023.100812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/13/2023] [Accepted: 08/20/2023] [Indexed: 10/02/2023]
Abstract
BACKGROUND This study aimed to compare tubular coaxial-NiTi and copper-NiTi orthodontic aligning archwires in terms of teeth alignment, patients' pain perception, and root resorption. SUBJECTS AND METHODS Orthodontic patients aged 12 years or older, having Little's irregularity index (LII) of 5-9mm were randomly allocated to either the copper-NiTi group or tubular coaxial-NiTi group with a 1:1 allocation ratio. The archwire sequence was 0.014-inch followed by 0.018-inch for the copper-NiTi group and 0.016-inch followed by 0.018-inch for the tubular coaxial-NiTi group. Each archwire was left in place for eight weeks before progressing to the next size. Good quality impression for the lower arch before treatment (T0) and thereafter every 4 weeks up to 16 weeks was taken to measure LII. Evaluation of pain perception was performed using a visual analog scale (VAS) during the first week following each archwire insertion. Assessment of root resorption was undertaken at T0 and after 16 weeks by taking periapical radiographs for mandibular central incisors using the long cone paralleling technique. RESULTS A total of 33 patients were randomized and selected for participation. Of those, 31 patients with a mean age of 15.45±2.22 who completed the trial were included in the analyses (15 patients in the copper-NiTi group and 16 patients in the tubular coaxial-NiTi group). In both groups, the irregularity index significantly decreased after 16 weeks of treatment with an overall reduction of 5.22mm for the copper-NiTi group and 6.03mm for the tubular coaxial-NiTi group. However, the difference between the two groups was not statistically significant. Likewise, pain perception and root resorption were not significantly different between the two study groups. CONCLUSIONS Both copper-NiTi and tubular coaxial-NiTi archwires were equally effective in terms of teeth alignment, patients' pain perception, and root resorption. Consideration could be given to the cost and clinician preference when selecting an initial archwire. REGISTRATION the trial was registered in ClinicalTrials.gov on 26/05/2022 with a registration ID: NCT05391542, https://clinicaltrials.gov/ct2/show/NCT05391542.
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Affiliation(s)
- Reyam M Noori
- Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Yassir A Yassir
- Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq; School of Dentistry, University of Dundee, Dundee DD1 4HN, UK.
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Mazinis E, Thomaidis V. A Cone-beam Computed Tomography Evaluation of External Invasive Resorption of Unerupted Teeth. Report of Three Cases. J Endod 2023; 49:1747-1753. [PMID: 37758063 DOI: 10.1016/j.joen.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 10/03/2023]
Abstract
Tooth resorption can occur either physiologically or pathologically and can be classified as internal or external. The term "external invasive resorption" (EIR) has been used to describe lesions originating from any surface defect exposing dentin. The absence of bacterial contamination, an intact pulp space, and a lesion consisting mainly of fibrovascular tissue characterize EIR. This study presents three cases of invasive resorption in unerupted teeth, emphasizing the importance of cone-beam computed tomography (CBCT). In two cases, the primary defect localized on the enamel surface, while in the third case, the focal point of the defect was not clear. CBCT provided detailed visualization of the resorption lesion's size and its relationship with surrounding structures, enhancing the diagnosis of EIR. Histological analysis of the third case confirmed the initial diagnosis. Invasive resorption can occur due to any surface defect in the case of unerupted teeth. Further research and correlation between radiographic and histological analysis are essential for the detection and classification systems in unerupted teeth.
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Affiliation(s)
- Emmanuel Mazinis
- Department of Endodontology, Dental School, Aristotle University of Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Vasilios Thomaidis
- Department of Anatomy, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Bilinska M, Zadurska M, Czochrowska E. Status of retained deciduous second molars in subjects with agenesis of second premolars in relation to age. Eur J Paediatr Dent 2023; 24:262 - 266. [PMID: 37743786 DOI: 10.23804/ejpd.2023.1654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
AIM To evaluate the presence and status of retained DM2 without permanent successors in relation to age. BACKGROUND Preservation of retained deciduous second molars (DM2) can be applied to treat congenital absence of second premolars (PM2). However, the consequences of caries and progressing root resorption or infraocclusion may affect their survival. METHODS Panoramic radiographs of individuals >10 years of age with agenesis of at least one PM2 were evaluated and divided into three groups according to age. The presence and location of retained DM2, caries/restorations, infraocclusion and root resorption were investigated. RESULTS A total of 131 subjects with PM2 agenesis were included (mean age: 13 years 11 months). The majority were missing one or two PM2. In total, 174 retained DM2 were present (33%), and their incidence was higher in the younger age groups. Caries/restorations were found in 88 (50.6%) and infraocclusion in 21 (12%) retained DM2. The roots were resorbed mostly for ½ of the root length (35%). CONCLUSION Long-term prognosis of retained DM2 without permanent successors seems uncertain, especially within the younger age group. In individuals older than 17 years, the prognosis for a healthy DM2 is favorable, if no distinct infraocclusion or extensive root resorption is present.
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Affiliation(s)
- M Bilinska
- DDS, PhD, Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus Denmark
| | - M Zadurska
- DDS, PhD, Professor, Department of Orthodontics, Medical University of Warsaw, Poland
| | - E Czochrowska
- DDS, PhD, Department of Orthodontics, Medical University of Warsaw, Poland
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Bardini G, Orrù C, Ideo F, Nagendrababu V, Dummer P, Cotti E. Clinical management of external cervical resorption: A systematic review. AUST ENDOD J 2023; 49:769-787. [PMID: 37702252 DOI: 10.1111/aej.12794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/14/2023]
Abstract
This review investigated whether any therapeutic options influenced the outcome of treatment for teeth with external cervical resorption. Out of 870 articles identified by an electronic search, 60 clinical case reports and six case series were included. No randomised clinical trials were found. Risk of bias was assessed using Joanna Briggs Institute's tools. External surgical intervention was the preferred method of accessing the lesions. Removal of resorptive tissue was most often achieved mechanically. Bioactive endodontic cements were the preferred materials for restoring teeth. The outcome measures were based on clinical and radiographic parameters. Of the cases included in the review, no specific treatment approach had a superior outcome in relation to Heithersay's classification. Furthermore, due to the absence of randomised clinical trials, and the low level of evidence associated with case reports/case series, it was not possible to define the optimum clinical treatment for external cervical resorption.
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Affiliation(s)
- Giulia Bardini
- Department of Conservative Dentistry and Endodontics, University of Cagliari, Cagliari, Italy
| | - Cristiano Orrù
- Department of Conservative Dentistry and Endodontics, University of Cagliari, Cagliari, Italy
| | - Francesca Ideo
- Department of Conservative Dentistry and Endodontics, University of Cagliari, Cagliari, Italy
| | - Venkateshbabu Nagendrababu
- Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - Paul Dummer
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| | - Elisabetta Cotti
- Department of Conservative Dentistry and Endodontics, University of Cagliari, Cagliari, Italy
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22
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Patel S, Abella F, Patel K, Lambrechts P, Al-Nuaimi N. Clinical and radiographic features of external cervical resorption - An observational study. Int Endod J 2023; 56:1475-1487. [PMID: 37801348 DOI: 10.1111/iej.13968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/30/2023] [Accepted: 08/17/2023] [Indexed: 10/07/2023]
Abstract
AIM To determine the prevalence of symptoms, clinical signs and radiographic presentation of external cervical resorption (ECR). METHODOLOGY This study involved 215 ECR lesions in 194 patients referred to the Endodontic postgraduate Unit at King's College London or Specialist Endodontic practice (London, UK). The clinical and radiographic findings (periapical [PA] and cone beam computed tomography [CBCT]) were readily accessible for evaluation. A checklist was used for data collection. Inferential analysis was carried out to determine if there was any potential association between type and location of tooth in the jaw as well as sex, age of the patient and ECR presentation and radiographic feature. RESULTS Eighty-eight patients (94 teeth) were female and 106 patients were male (121 teeth), the mean age (±SD) was 41.5 (±17.7) years. Fifteen patients (7.7%) had more than one ECR lesion. The most affected teeth were maxillary central incisors (21.4% [46 teeth]) and mandibular first molars (10.2% [22 teeth]). ECR was most commonly detected as an incidental radiographic finding in 58.1% [125 teeth] of the cases. ECR presented with symptoms of pulpal/periapical disease in 23.3% [n = 50] and clinical signs (e.g. pink spot, cavitation) in 16.7% [36 teeth] of the cases. Clinical signs such as cavitation (14%), pink spot (5.1%) and discolouration (2.8%) were uncommon, but their incidence increased up to 24.7% when combined with other clinical findings. ECR was detected in the resorptive and reparative phases in 70.2% and 29.8% of the cases respectively. CONCLUSION ECR appears to be quiescent in nature, the majority being asymptomatic and diagnosed incidentally from PA or CBCT. When assessed with the Patel classification, most lesions were minimal to moderate in relation to their height (1 or 2) and circumferential spread (A or B). However, the majority of ECRs were in (close) proximity to the pulp. Symptoms and clinical signs were associated with (probable) pulp involvement rather than the height and circumferential spread of the lesion. Clinical signs were more frequently associated when ECR affected multiple surfaces.
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Affiliation(s)
- Shanon Patel
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
- Private Practice, London, UK
- Guy's & St. Thomas', NHS Trust, London, UK
| | | | - Kreena Patel
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Paul Lambrechts
- Department of Oral Health Sciences, Endodontology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Nassr Al-Nuaimi
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
- Department of Restorative & Aesthetic Dentistry, College of Dentistry, University of Baghdad, Baghdad, Iraq
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23
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Guzman-Perez G, Jurado CA, Alshahib A, Afrashtehfar KI. An immediate implant approach to replace failing maxillary anterior dentition due to orthodontically induced severe root resorption. Int J Oral Implantol (Berl) 2023; 16:339-348. [PMID: 37994821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Incomplete orthodontic therapy can lead to severe root resorption, resulting in mobile and non-restorable teeth. This clinical report presents the diagnosis, treatment planning and oral rehabilitation of a young woman with failing dentition in the anterior maxilla due to orthodontically induced root resorption. The patient's chief complaint was mobile maxillary anterior teeth 2 years after discontinuing orthodontic treatment. Radiographic and clinical evaluations revealed a missing right first premolar and left premolars and grade III mobility from the right canine to the left lateral incisor. Due to a hopeless prognosis, extraction of the maxillary anterior teeth was planned, followed by grafting procedures. Four implants were immediately placed in the fresh sockets of the canine and central sites, and a removable provisional appliance was delivered to contour the soft tissues involved. The final restorations consisted of two three-unit layered zirconia implant-supported fixed dental prostheses. Well-planned immediate implant therapy and zirconia restorations can successfully replace mobile teeth with severe root resorption caused by external surface resorption from incomplete orthodontic treatment. Combining grafting procedures during implant placement can replace hard tissue lost due to extractions, whereas provisional restorations can re-establish optimal tissue architecture in the aesthetic zone. The present case offers insight into effective strategies for treating non-compliant or uncooperative patients with failing dentition due to orthodontically induced root resorption.
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24
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Elfouly D, El-Harouni NM, Ismail HA, El-Bialy T, Ghoneima A. Does maxillary sinus proximity affect molar root resorption during distalization using Invisalign? a CBCT study. BMC Oral Health 2023; 23:905. [PMID: 37990186 PMCID: PMC10664583 DOI: 10.1186/s12903-023-03672-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 11/15/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND This study aimed to assess the correlation between maxillary sinus proximity to root apices of maxillary molars and root resorption during molar distalization using clear aligner therapy (CAT). MATERIALS AND METHODS Thirty-eight cone beam computed tomography scans (CBCTs) obtained pre- (T0) and post-treatment (T1) from 19 adult patients (36.68 ± 13.50 years), who underwent maxillary molar distalization using Invisalign® aligners (Align Technology, Inc., San José, CA, USA) with a minimum of 2 mm distalization, were evaluated in this study At least 22 h of aligner wear per day was a main inclusion criterion. Sinus proximity and changes in root lengths were measured for 61 molars (183 roots). Spearman coefficient analysis was used for assessing correlation between sinus proximity and root resorption. The level of significance was set at p ≤ 0.05. The reproducibility of measurements was assessed by intraclass correlation coefficient (ICC). RESULTS Spearman coefficient revealed no significant correlation between sinus proximity and molar root resorption for mesiobuccal, distobuccal or palatal roots (p = 0.558, p = 0.334, p = 0.931, respectively). CONCLUSION There was no correlation between maxillary sinus proximity to root apices of maxillary molars and root resorption.
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Affiliation(s)
- Dina Elfouly
- Department of Orthodontics, Faculty of Dentistry, Alexandria University, Champollion St., P.O. Box 21521, Azarita, Alexandria, Egypt.
| | - Nadia M El-Harouni
- Department of Orthodontics, Faculty of Dentistry, Alexandria University, Champollion St., P.O. Box 21521, Azarita, Alexandria, Egypt
| | - Hanan A Ismail
- Department of Orthodontics, Faculty of Dentistry, Alexandria University, Champollion St., P.O. Box 21521, Azarita, Alexandria, Egypt
| | - Tarek El-Bialy
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ahmed Ghoneima
- Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE
- Adjunct Faculty, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indianapolis, IN, USA
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25
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Elsayed HS, El-Beialy AR, Alshazly R, Almohammad A, Elazab K, El-Badawy R, Palomo JM, Mostafa YA. Implant-supported canine retraction using different reactivation intervals of elastomeric chains: A CBCT-based split-mouth randomized controlled trial. Dental Press J Orthod 2023; 28:e2321166. [PMID: 37937679 PMCID: PMC10627421 DOI: 10.1590/2177-6709.28.5.e2123166.oar] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/25/2022] [Indexed: 11/09/2023] Open
Abstract
INTRODUCTION Orthodontists attempt to maximize treatment efficiency regarding time, tooth position and adverse effects. A new approach, not yet explored, is the activation frequency. OBJECTIVE The aim of this split-mouth randomized controlled trial was to evaluate the effect of reactivation intervals on the efficiency of tooth movement. METHODS Thirty eight patients having a Class I malocclusion with bimaxillary dentoalveolar protrusion or severe crowding, Class II with mandibular deficiency or Class III, requiring first premolar extraction and canine retraction were recruited. Elastomeric chains producing 150g were replaced every two, four, six or eight weeks. There were 36, 37, 36, and 36 quadrants randomly allocated to these groups, respectively. The canine retraction rate was the primary outcome. Canine tipping, rotation, and root resorption and pain were the secondary outcomes. Only the outcome assessors were blinded to group assignment. RESULTS The average total movement for the 6 months was 5.14, 5.31, 2.79 and 3.85 mm for the two-week, four-week, six-week and eight-week reactivation intervals, respectively. Root resorption was significantly higher in the two-week and four-week groups. No adverse events were observed. CONCLUSION The canine retraction rate, tipping, rotation and pain were similar in 2, 4, 6 and 8-week activation intervals groups. Longer reactivation intervals show less root resorption. The trial protocol was not pre-registered. The study was self-funded.
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Affiliation(s)
- Hend S Elsayed
- Oral and Dental Research Institute, National Research Centre, Department of Orthodontics & Pediatric Dentistry (Giza, Egypt)
| | - Amr R El-Beialy
- Cairo University, Faculty of Dentistry, Department of Orthodontics and Dentofacial Orthopedics (Cairo, Egypt)
| | - Reem Alshazly
- Future University in Egypt, Faculty of Oral & Dental Medicine, Department of Orthodontics and Dentofacial Orthopedics (Cairo, Egypt)
| | - Ahmad Almohammad
- Future University in Egypt, Faculty of Oral & Dental Medicine, Department of Orthodontics and Dentofacial Orthopedics (Cairo, Egypt)
| | - Karim Elazab
- Future University in Egypt, Faculty of Oral & Dental Medicine, Department of Orthodontics and Dentofacial Orthopedics (Cairo, Egypt)
| | - Rodayna El-Badawy
- Oral and Dental Research Institute, National Research Centre, Department of Orthodontics & Pediatric Dentistry (Giza, Egypt)
| | - Juan Martin Palomo
- Case Western Reserve University, School of Dental Medicine, Department of Orthodontics (Cleveland/OH, USA)
| | - Yehya A Mostafa
- Future University in Egypt, Faculty of Oral & Dental Medicine, Department of Orthodontics and Dentofacial Orthopedics (Cairo, Egypt)
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26
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Gürses G, Akçakaya A, Aktı A, Aydin O. The effect of impacted third molars on second molar external root resorption, a cross-sectional cone beam computed tomography study. Med Oral Patol Oral Cir Bucal 2023; 28:e504-e511. [PMID: 37823291 PMCID: PMC10635620 DOI: 10.4317/medoral.25860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 09/11/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND Third molars have the highest prevalence of impaction in teeth and can cause pathological damage on the adjacent second molars. This study aims to evaluate the effects of factors related to impacted third molars on external root resorption (ERR) in adjacent second molars using cone-beam computed tomography (CBCT). MATERIAL AND METHODS In CBCTs, the effect of impacted third molars on the root surface of adjacent second molars was investigated. Inclusion criteria for subjects were being older than 16 and younger than 55, presence of at least one impacted third molar and adjacent second molar. Exclusion criteria were pathology, a follicle gap greater than 5 mm, crowned second molar, severe decay, an artifact on a radiologic image, and previous surgery on the second or third molars. The investigations were made based on age range, gender, tooth inclination, Pell-Gregory classification, retention type, contact area, root formation, pericoronal width, and tooth absence on the same quadrant for potential risk factors. The collected data were statistically analyzed with R software. The Chi-Square test was used to find out any significant difference. Logistic regression analyses were done for potential risk factors for ERR. RESULTS A total of 437 impacted third molars and adjacent second molars were investigated using CBCT. Of these, 381 met the inclusion criteria. Mesioangular and horizontal inclination, Pell-Gregory Class B-C, contact area, and retention type were found the statistically potential risk factors for ERR. CONCLUSIONS The impacted third molar with horizontal or mesioangular position, and osseous retention, with Pell and Gregory Class B and C, are more likely to cause external root resorption in adjacent second molars.
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Affiliation(s)
- G Gürses
- Akademi, Selçuk Üniversitesi Diş Hekimliği Fakültesi Alaeddin Keykubat Kampüsü, İsmet Paşa Cd. No:309 42250 Selçuklu, Konya, Turkey
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27
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Withayanukonkij W, Chanmanee P, Promsawat M, Viteporn S, Leethanakul C. Root resorption during maxillary molar intrusion with clear aligners: a randomized controlled trial. Angle Orthod 2023; 93:629-637. [PMID: 37922387 PMCID: PMC10633803 DOI: 10.2319/010723-14.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 04/01/2023] [Indexed: 11/05/2023] Open
Abstract
OBJECTIVES To compare changes in maxillary molar root resorption, intrusion amount, dentoskeletal measures, and maximum bite force (MBF) between clear aligners (CA) and fixed appliances with miniscrew (FM) during molar intrusion. MATERIALS AND METHODS Forty adults with anterior open bite were randomized into either CA or FM groups. Lateral cephalograms, cone-beam computed tomography (CBCT), and MBF were collected at pretreatment (T0) and 6 months of treatment (T1). Maxillary molar intrusion in FM were intruded by nickel-titanium (NiTi) closed-coil spring delivered force (150 grams/side) while clear aligners combined with squeezing exercise were performed in CA. Parametric tests were used for statistical analysis. RESULTS After 6 months of treatment, significant root resorption of 0.21-0.24 mm in CA and 0.38-0.47 mm in FM were found while maxillary molars were intruded 0.68 and 1.49 mm in CA and FM, respectively. CA showed significant less root resorption and intrusion than FM. Overbite, bite closing, and MBF increased significantly. CA showed significantly less overbite and SN-MP changes but more MBF increase than FM. MBF in CA was correlated with the amount of maxillary molar intrusion (r = 0.736, P < .05). CONCLUSIONS Maxillary molar intrusion and root resorption in CA were half the amount in FM in 6 months. The amount of maxillary molar root resorption was one-third of the intrusion distance. CA displayed less overbite increase and bite closing but more MBF increase than FM. MBF in CA was positively correlated with the molar intrusion amount.
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Affiliation(s)
| | | | | | | | - Chidchanok Leethanakul
- Corresponding author: Dr Chidchanok Leethanakul, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand (e-mail: )
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28
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Goyal M, Kumar M, Yadav E, Singh T. Queries regarding comparative cone-beam computed tomographic evaluation of maxillary incisor intrusion and associated root resorption. Am J Orthod Dentofacial Orthop 2023; 164:460. [PMID: 37758395 DOI: 10.1016/j.ajodo.2023.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/26/2023] [Indexed: 10/03/2023]
Affiliation(s)
- Manish Goyal
- Moradabad, Jhansi, and Greater Noida, Uttar Pradesh, India
| | - Mukesh Kumar
- Moradabad, Jhansi, and Greater Noida, Uttar Pradesh, India
| | - Ekta Yadav
- Moradabad, Jhansi, and Greater Noida, Uttar Pradesh, India
| | - Tanisha Singh
- Moradabad, Jhansi, and Greater Noida, Uttar Pradesh, India
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Elhanouty MZ, Al-Nimri KS, Alomari SA. A comparison between two orthodontic archwire sequences in terms of speed of alignment and root resorption: a randomized controlled clinical trial. Clin Oral Investig 2023; 27:5671-5678. [PMID: 37530893 DOI: 10.1007/s00784-023-05188-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/28/2023] [Indexed: 08/03/2023]
Abstract
OBJECTIVES To compare between two archwire (AW) sequences in terms of alignment speed and root resorption (RR). MATERIALS AND METHODS Fifty-four patients (14 males, 40 females) requiring orthodontic treatment were randomly allocated into two groups; in group A (mean age 18.3) treatment started with 0.014″ nickel titanium (NiTi) followed by 0.019″×0.025″ NiTi AW while group B (mean age 18.9) the AW sequence was 0.014″ NiTi, 0.018″ NiTi, 0.016″×0.022″ NiTi, 0.019″×0.025″ NiTi. The primary outcome was to compare the alignment speed of the crowded upper and lower teeth between the two different AW sequences. The secondary outcome was to assess the magnitude of upper and lower incisors' root resorption (RR) measured by digital periapical radiographs taken at the start of treatment and 1 month after the placement of the working AW. t-test was used to compare the alignment speed and RR between the two groups. Statistical significance was predetermined at the P ≤ 0.05 level for all tests. RESULTS The 54 patients were randomized in a 1:1 ratio to either group. Seven patients were excluded and complete data were obtained for 47 patients; 24 and 23 patients in group A and group B, respectively. There was no significant difference between the two groups in the alignment speed in the lower arch (P>0.05, mean difference=-0.44, 95% CI=-0.9 to 0.03) and root resorption (P>0.05). Alignment of upper arch was faster in group A (P < 0.0001, mean difference= - 0.9, 95% CI =-1.4 to -0.5). CONCLUSIONS There is no significant difference between the two groups in the alignment speed in the lower arch and incisors' RR. Upper arch alignment was faster in group A. TRIAL REGISTRATION Not registered.
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Affiliation(s)
- Mutaz Z Elhanouty
- Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan.
| | - Kazem S Al-Nimri
- Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan
| | - Sawsan A Alomari
- Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan
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30
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Wang N, Zhang M, Zhu J, Zhu Y, Wu J. Multiple idiopathic cervical root resorption: A systematic review. Oral Dis 2023; 29:2409-2422. [PMID: 36251582 DOI: 10.1111/odi.14406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/08/2022] [Accepted: 10/12/2022] [Indexed: 11/28/2022]
Abstract
The current literature on multiple idiopathic cervical root resorption (MICRR), a rare and aggressive form of external root resorption, is limited to case reports and series. Therefore, we performed a systematic review of this condition. A comprehensive search of PubMed, Embase, Web of science, Cochrane Library, CNKI, and WANFANG was conducted using key terms relevant to MICRR, supplemented by a grey literature search. Risk of bias was assessed using Cochrane's and Joanna Briggs Institute's tools. A total of 36 studies with 47 cases were included. MICRR is more common among younger females and may be related to hormonal changes and denosumab use. Initially, the premolars are usually affected but all permanent teeth may eventually be involved. Cone-beam computed tomography is recommended for diagnosis and assessment of resorptive lesions. The management is focused on complete removal and restoration of the resorptive tissue to maintain the tooth's structural integrity. However, MICRR usually has a poor prognosis. Due to its invasive and aggressive behavior, MICRR requires greater attention.
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Affiliation(s)
- Ningxiang Wang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
- Department of Stomatology, Nanjing Hospital of Chinese Medicine, Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - Mei Zhang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jiaye Zhu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yaoyao Zhu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Juan Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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Leonardi R, Ronsivalle V, Isola G, Cicciù M, Lagravère M, Flores-Mir C, Lo Giudice A. External root resorption and rapid maxillary expansion in the short-term: a CBCT comparative study between tooth-borne and bone-borne appliances, using 3D imaging digital technology. BMC Oral Health 2023; 23:558. [PMID: 37573295 PMCID: PMC10422725 DOI: 10.1186/s12903-023-03280-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/03/2023] [Indexed: 08/14/2023] Open
Abstract
BACKGROUND The aim of the study was to analyze and compare external root resorption (ERR) in patients treated with tooth-borne (TB) and bone-borne (BB) rapid maxillary expansion (RME). METHODS The sample included 40 subjects who received tooth-borne RME (TB group, average age: 13.1 ± 1.08 years) or bone-borne RME (BB group, average age: 14.5 ± 1.11 years) and Cone-beam computed tomography (CBCT) scans before treatment (T0) and after 3-month of retention (T1). A specific 3D Imaging technology was used to generate 3D models of posterior dentition (M1 = maxillary first molars, P2 = second premolars, P1 = first premolar) and calculate volumetric data (mean and percentage values) and shape changes, the latter obtained from deviation analysis between the radicular models at different time points. Evaluation of radicular length changes was performed for each tooth. Data were statistically analysed to perform intra-timing and inter-groups comparisons. RESULTS A significant reduction of radicular volume and length was found in posterior dentition in both groups (p < 0.05), and the M1 (volume) and its palatal root (length) were mostly involved in this response. No differences were found between M1, P1 and P2 (p > 0.05) when volumetric changes were calculated as percentage of the total volume. Deviation analysis revealed that the radicular areas mostly affected by shape change were the apex and bucco-medial side. The amount of ERR was significantly greater in TB group compared to BB group. CONCLUSIONS BB-RME treatment could reduce the amount of ERR at the post-expansion stage.
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Affiliation(s)
- Rosalia Leonardi
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, University of Catania, Catania, Italy
| | - Vincenzo Ronsivalle
- Department of General Surgery and Medical-Surgical Specialties, Section of Oral Surgery, University of Catania, Catania, Italy
| | - Gaetano Isola
- Department of General Surgery and Medical-Surgical Specialties, Section of Periodontology, University of Catania, Catania, Italy
| | - Marco Cicciù
- Department of General Surgery and Medical-Surgical Specialties, Section of Oral Surgery, University of Catania, Catania, Italy
| | - Manuel Lagravère
- Orthodontic Graduate Program, University of Alberta, Edmonton, AB, Canada
| | - Carlos Flores-Mir
- Orthodontic Graduate Program, University of Alberta, Edmonton, AB, Canada
| | - Antonino Lo Giudice
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, University of Catania, Catania, Italy.
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Parrales-Bravo C, Friedrichsdorf SP, Costa C, Paiva JB, Iglesias-Linares A. Does endodontics influence radiological detection of external root resorption? an in vitro study. BMC Oral Health 2023; 23:221. [PMID: 37069535 PMCID: PMC10108466 DOI: 10.1186/s12903-023-02871-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 03/10/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND External root resorption (ERR) has a multifactorial etiology and is difficult to diagnose, which means that is continues to be of research interest. This work mainly aims to determine whether external root resorption can be differentially detected in root-filled versus non-endodontically treated teeth using digital periapical radiography (DPR) and cone-beam computed tomography (CBCT). METHODS The Checklist for Reporting In-vitro Studies (CRIS) guidelines were followed throughout this study. This experiment highlights the preparation and generation of standardized synthetic teeth measured on three-dimensional records converted into Digital Imaging and Communication on Medicine (DICOM) file format. Twelve replicate maxillary incisors were randomized into two groups: (G1) six non-endodontically treated, and (G2) six endodontically treated teeth. In both groups, actual tooth lengths of all specimens were measured and compared with measurements obtained using DPR and CBCT. Simulated ERR lesions [0.12, 0.18, 0.20 mm × 0.5 mm depth in the mesial, distal and palatal apical regions] were created progressively, radiographic images were recorded, and 24 DPRs and 96 CBCTs were obtained in total. Eight blinded, previously calibrated researchers made a total of 1920 measurements (using Horos Software). Data were analyzed using the Shapiro-Wilk, ANOVA, Kruskal-Wallis and Wilcoxon rank post-hoc tests [Bonferroni correction in multiple comparison tests (p < 0.05)]. RESULTS ICC values for intra- and inter-examiner agreement were appropriate. DPR overestimated ERR detection compared to the actual and CBCT measurements [Mean diff = 0.765 and 0.768, respectively]. CBCT diagnosis of ERR lesions in specimens without root canal treatment was significantly more accurate than DPR diagnoses on both non-endodontically and endodontically-treated specimens [p = 0.044; p = 0.037, respectively]. There was an 18.5% reduction in sensitivity in all DPR diagnoses made on endodontic teeth versus those made on non-endodontically treated teeth. For the smallest ERR lesions, this sensitivity was even more marked, with 27.8 and 25% less sensitivity, respectively. CONCLUSIONS The results of this study highlight that both CBCT and DPR are good diagnostic methods for ERR. Nevertheless, root canal filling material influences diagnostic capability in ERR. The clinical significance was that the presence of intracanal material reduces the detection and diagnosis of ERR by DPR in teeth with root canal treatment.
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Affiliation(s)
- C. Parrales-Bravo
- School of Dentistry, University of Guayaquil, Guayaquil, Ecuador
- School of Dentistry, Complutense, BIOCRAN Research Group, Complutense University of Madrid, Madrid, Spain
| | | | - C. Costa
- School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - J. B. Paiva
- School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - A. Iglesias-Linares
- School of Dentistry, Complutense, BIOCRAN Research Group, Complutense University of Madrid, Madrid, Spain
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Song D, Luo Y, Liu X, Hu P, Huang D. Combined micro-apical surgery and vital pulp therapy in mandibular second molars with external root resorption caused by impacted teeth. Hua Xi Kou Qiang Yi Xue Za Zhi 2023; 41:225-231. [PMID: 37056190 PMCID: PMC10427263 DOI: 10.7518/hxkq.2023.2022427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/28/2022] [Indexed: 04/15/2023]
Abstract
OBJECTIVES This study aimed to establish a new treatment of the mandibular second molars with external root resorption caused by impacted teeth to preserve the affected teeth and their vital pulps. METHODS For mandibular second molars clinically diagnosed as external root resorption caused by impacted teeth, debridement and removal of the root at the resorption site via micro-apical surgery and direct capping of the pulp with bioactive material on the surface of the root amputation via vital pulp therapy were performed immediately after the impacted teeth were extracted. RESULTS The external root resorption of the affected tooth was ceased. It was asymptomatic with intact crown, normal pulp, periapical alveolar bone reconstruction, normal periodontal ligament, continuous bone sclerosis, and no periapical translucency in radiographic examination at the 1-year postoperative follow-up, thus showing good prognosis. CONCLUSIONS Simultaneous combination of micro-apical surgery and vital pulp therapy after extraction of impacted teeth could successfully preserve mandibular second molars with ERR caused by impacted teeth and their vital pulps.
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Affiliation(s)
- Dongzhe Song
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yu Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xian Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Pei Hu
- State Key Laboratory of Oral Diseases & National Cli-nical Research Center for Oral Diseases & Dept. of General Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Dingming Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Marañón-Vásquez G, Küchler EC, Hermann S, Paddenberg E, Schröder A, Baratto-Filho F, Flores-Mir C, Proff P, Kirschneck C. Association between genetic variants in key vitamin-D-pathway genes and external apical root resorption linked to orthodontic treatment. Eur J Oral Sci 2023; 131:e12916. [PMID: 36683003 DOI: 10.1111/eos.12916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 12/31/2022] [Indexed: 01/24/2023]
Abstract
This study evaluated the association between single-nucleotide polymorphisms (SNPs) in vitamin-D-related genes and the amount of external apical root resorption linked to orthodontic treatment. One hundred and forty-three individuals were assessed. The amount of external apical root resorption of upper central incisors (EARRinc ) and lower first molars (EARRmol ) were evaluated in radiographs. Seven SNPs were genotyped across four genes including the vitamin D receptor [VDR], group-specific component [GC], cytochrome P450 family 27 subfamily B member 1 [CYP27B1], and cytochrome P450 family 24 subfamily A member 1 [CYP24A1]. Linear regressions were implemented to determine allele-effects on external apical root resorption. Individuals carrying the AA genotype in VDR rs2228570 had a 21% higher EARRmol than those having AG and GG genotypes (95% CI: 1.03,1.40). EARRmol in heterozygous rs2228570, was 12% lower than for homozygotes (95%CI: 0.78,0.99). Participants with the CCG haplotype (rs1544410-rs7975232-rs731236) in VDR had an EARRmol 16% lower than those who did not carry this haplotype. Regarding CYP27B1 rs4646536, EARRinc in participants who had at least one G allele was 42% lower than for homozygotes AA (95%CI: 0.37,0.93). Although these results did not remain significant after multiple testing adjustment, potential associations may still be suggested. Further replication studies are needed to confirm or refute these findings.
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Affiliation(s)
- G Marañón-Vásquez
- Department of Pediatric Dentistry, and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - E C Küchler
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - S Hermann
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - E Paddenberg
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - A Schröder
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - F Baratto-Filho
- Department of Dentistry, School of Dentistry, Univille - University of the Joinville Region, Joinville, Santa Catarina, Brazil
| | - C Flores-Mir
- Division of Orthodontics, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - P Proff
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - C Kirschneck
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
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Suhr Villefrance J, Wenzel A, Kirkevang LL, Væth M, Christensen J, Matzen LH. Early detection of external cervical resorption in posterior teeth: a radiographic, cross-sectional study of an adolescent population. Dentomaxillofac Radiol 2023; 52:20220223. [PMID: 36331310 PMCID: PMC9974234 DOI: 10.1259/dmfr.20220223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/15/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVES To establish the prevalence and severity of external cervical resorption (ECR) in posterior teeth observed in bitewing (BW) radiographs in an epidemiological study of a 17-year-old patient population from community dentistry. Furthermore, to assess the potential predisposing factors for ECR. METHODS Posterior BWs from 5596 patients (2717 females, 2879 males; mean age 17.8 years) were assessed by three observers in order to detect ECR (using Heithersay's classification system, severity classes 1-4). When ECR was suspected, cone beam CT (CBCT) was offered to verify diagnosis. Prevalence was estimated based on ECR suspected in BWs and finally in CBCT. Possible predisposing factors (orthodontic treatment, trauma, and periodontal disease) were recorded and assessed for association with ECR. RESULTS In 41 patients, ECR was suspected in BWs (suspected prevalence 0.73%). 32 patients accepted CBCT examination, of which eight were verified to have ECR (final prevalence 0.18%). In 24 patients, other disease entities and abnormal tooth morphology, that had mimicked ECR in BWs, excluded ECR in CBCT. ECR severity ranged from class 1-3 in BW and 2-4 in CBCT. All but one case had not been diagnosed by the patient's community dentist. No statistically significant association between predisposing factors and ECR was identified. CONCLUSIONS ECR had low prevalence in this adolescent population, as observed in both BWs and CBCT. Still, early detection of ECR is important for treatment prognosis, and attention should be paid to this disease entity when assessing BWs obtained for other diagnostic purposes. CBCT may subsequently aid in verifying the disease.
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Affiliation(s)
- Julie Suhr Villefrance
- Section for Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Ann Wenzel
- Section for Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Lise-Lotte Kirkevang
- Section for Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Michael Væth
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | | | - Louise Hauge Matzen
- Section for Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
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Li XY, Zou XY, Yue L. [Pathogenesis and classification of tooth resorption]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:1177-1181. [PMID: 36379899 DOI: 10.3760/cma.j.cn112144-20220513-00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Tooth resorption is an idiopathic destructive disease of dental hard tissues. The etiology and pathogenesis remain obscure. It has various manifestations and can be commonly classified as internal tooth resorption and external root resorption on the basis of the resorptive lesion sites. There have been many attempts to make further classification based upon the pathological manifestations in recent years. Radiographic examination is an effective tool to assist in the diagnosis. There are few systematic researches on tooth resorption worldwide, most of which are case reports. This review elaborates on the research progress of tooth resorption from aspects of pathogenesis and classification.
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Affiliation(s)
- X Y Li
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X Y Zou
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - L Yue
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Brezniak N, Wasserstein A. Does pulp have a role in root resorption? Angle Orthod 2022; 92:815-817. [PMID: 36279256 PMCID: PMC9598847 DOI: 10.2319/1945-7103-92.6.815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Jabali AH. Management of Multiple Idiopathic Root Resorption in a Rheumatoid Arthritis Patient: A Case Report with 4-year Follow-up. J Contemp Dent Pract 2022; 23:652-658. [PMID: 36259307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 06/14/2022] [Indexed: 06/16/2023]
Abstract
Cervical root resorption is a rare destructive disease that originates from the external cervical root surface. It has a multifactorial etiology. Cervical root resorption may affect several teeth and its treatment can be complicated due to the size, location, and extension of the resorptive defect. Rheumatoid arthritis is a chronic inflammatory autoimmune disease that has systemic effects. The objective of this article was to report a rare case of multiple idiopathic cervical resorptions in a patient with rheumatoid arthritis. A 52-year-old male patient with a 20-year history of rheumatoid arthritis was diagnosed with multiple idiopathic cervical resorptions through cone-beam computed tomography (CBCT) and clinical examination. All known causes for cervical resorption were ruled out after a detailed anamnesis. This report details inflammation due to rheumatoid arthritis as a possible cause of idiopathic cervical resorption. The systemic alterations wrought by rheumatoid arthritis could be related to the etiopathogenesis of cervical root resorption. Non-surgical endodontic treatment was done for the maxillary left canine. The defect was surgically repaired using bioceramic putty. The 12-month recall revealed the good healing of the periodontal and periradicular conditions with no obvious clinical symptoms. At the 36-month recall visit, clinical and radiographic evidence of deterioration in the repair material was observed. At the 54-month follow-up, deterioration of repair material was observed with an increase in the extension of resorption in tooth 14 was detected. Reasons for this deterioration remain unclear. Ruling out all other factors for cervical root resorption, how rheumatoid arthritis contributes to cervical root resorption is still lacking/unclear. Dental care providers must be vigilant for signs of cervical root resorption in vulnerable patients with rheumatoid arthritis for early diagnosis and prompt treatment. Keywords: External root resorption, Inflammatory markers, Multiple root resorption, Rheumatoid arthritis, Resorption repair.
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Affiliation(s)
- Ahmad H Jabali
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia, Phone: +966503094502, e-mail:
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高 娟, 吕 航, 马 慧, 赵 一, 李 小. [Evaluation of root resorption after surgical orthodontic treatment of skeletal Class Ⅲ malocclusion by three-dimensional volumetric measurement with cone-beam CT]. Beijing Da Xue Xue Bao Yi Xue Ban 2022; 54:719-726. [PMID: 35950398 PMCID: PMC9385520 DOI: 10.19723/j.issn.1671-167x.2022.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To explore the method of measuring root volume with cone-beam computed tomography (CBCT) three-dimensional reconstruction technology, and to study root length and root volume of upper and lower central incisors in patients with skeletal Class Ⅲ malocclusion treated by surgical orthodontic treatment. METHODS Twenty patients with skeletal Class Ⅲ malocclusion undergoing surgical orthodontic treatment were selected. CBCT data at three time points, before decompensation treatment (T0), after decompensation treatment (before orthognathic surgery, T1), and the end of post-operative orthodontic treatment (T2) were collected. Three-dimensional reconstruction technology was used to measure the root length and root volume of the upper and lower central incisors (including total root volume, cervical root and apical root), calculate the percentage of reduction volume, and measure the distance of tooth movement after orthodontic treatment. Data were statistically analyzed by SPSS 20.0 software. Least significant difference (LSD) method was used for pair comparison between the groups subject to normal distribution, and non-parametric test was used for comparison between the groups not subject to normal distribution. The differences of root length and root volume of upper and lower incisors were compared, and the characteristics of root absorption were analyzed. RESULTS Root length and root volume of the upper and lower central incisors were reduced during the surgical orthodontic treatment (P < 0.05) in cases. Both the root volume of cervical root and apical root were significantly reduced (P < 0.05), the reduction of apical root was more significant. The percentage of root volume reduction of the upper central incisor was (30.51±23.23)%, and lower central incisor (23.24±11.96)%. Compared with the upper central incisor, the root volume reduction amount and percentage of the lower central incisor were smaller, and apical root volume reduction of the upper central incisor was greater than that of the lower central incisor, which was statistically significant (P < 0.05). During pre-surgical orthodontic treatment, maxillary central incisor palatal moving was in a controlled tipping manner, and the mandibular central incisor tipped labially. CONCLUSION In patients with skeletal Class Ⅲ malocclusion, root length and total root volume of upper and lower central incisors decreased during surgical orthodontic treatment. Root volume measurement indicated that the cervical root also had root resorption. The difference in root resorption of the upper and lower central incisors might be related to the distance and direction of teeth movement. CBCT three-dimensional reconstruction will compensate for the limitation of root length measurement in evaluating root resorption.
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Affiliation(s)
- 娟 高
- 北京大学口腔医学院·口腔医院正畸科,国家口腔医学中心,国家口腔疾病临床医学研究中心,口腔生物材料和数字诊疗装备国家工程研究中心,口腔数字医学北京市重点实验室,国家卫生健康委员会口腔医学计算机应用工程技术研究中心,北京 100081Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
- 贵阳市口腔医院正畸科,贵阳 550002Department of Orthodontics, Guiyang Stomatological Hospital, Guiyang 550002, China
| | - 航苗 吕
- 北京大学口腔医学院·口腔医院正畸科,国家口腔医学中心,国家口腔疾病临床医学研究中心,口腔生物材料和数字诊疗装备国家工程研究中心,口腔数字医学北京市重点实验室,国家卫生健康委员会口腔医学计算机应用工程技术研究中心,北京 100081Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
| | - 慧敏 马
- 北京大学口腔医学院·口腔医院正畸科,国家口腔医学中心,国家口腔疾病临床医学研究中心,口腔生物材料和数字诊疗装备国家工程研究中心,口腔数字医学北京市重点实验室,国家卫生健康委员会口腔医学计算机应用工程技术研究中心,北京 100081Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
| | - 一姣 赵
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Digital Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 小彤 李
- 北京大学口腔医学院·口腔医院正畸科,国家口腔医学中心,国家口腔疾病临床医学研究中心,口腔生物材料和数字诊疗装备国家工程研究中心,口腔数字医学北京市重点实验室,国家卫生健康委员会口腔医学计算机应用工程技术研究中心,北京 100081Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
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Abstract
Tooth root resorption is multifactorial, leading to progressive destruction and eventual loss of tooth root dentin and cement. There are internal and external types of root resorption, each having its variety. The etiology and pathogenesis of tooth root resorption are poorly understood, and the most significant etiological factors are trauma, pulpal infection, tooth bleaching, and orthodontic treatment. Tooth root resorption is primarily asymptomatic; thus, it is revealed accidentally by radiographic examination. Progressive clinical manifestations are pain, tooth discoloration, tooth mobility, and other conditions. Awareness of the causes and risk factors allowing tooth root resorption, and regular radiographic examination, in case of necessity, make it possible to reveal resorption at an early stage and to prevent its further development. Thus, the aim of this study is to present etiopathogenesis, a clinical course, and diagnostic peculiarities of internal and external types of tooth root resorption, enabling practicing dentists to timely diagnose root resorption and take appropriate measures to avoid further complications. Within the limitation of this review, even though the etiopathogenesis of tooth root resorption is yet not fully understood, it is suggested that the etiological factors fall into two groups (endogenic and exogenic) to enhance further understanding of the possible causes and mechanisms of root resorption and allow practitioners to monitor high-risk patients and make timely diagnoses. Moreover, radiographic examination and CBCT are indispensable for the diagnosis of root resorption.
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Affiliation(s)
- Artak Heboyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Anna Avetisyan
- Department of Therapeutic Stomatology, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Mohmed Isaqali Karobari
- Department of Conservative & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, Cambodia
- Center for Transdisciplinary Research (CFTR), Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences University, Chennai, Tamil Nadu, India
| | - Anand Marya
- Department of Orthodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, Cambodia
| | - Zohaib Khurshid
- Department of Prosthodontics and Implantology, College of Dentistry, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
| | - Dinesh Rokaya
- Department of Clinical Dentistry, Walailak University International College of Dentistry, Walailak University, Bangkok, Thailand
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah, Saudi Arabia
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad, Pakistan
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Zhou W, Wang L, Wang L, Wang YH, Zhao CY. [Cone-beam CT analysis of external root resorption of maxillary incisors before and after traction of impacted canines]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:611-617. [PMID: 35692005 DOI: 10.3760/cma.j.cn112144-20210716-00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the external root resorption of incisors caused by maxillary canine impaction, and to explore the changes of incisor external root resorption after orthodontic treatment. Methods: Twenty-four patients with impacted maxillary canines leading to external root resorption of incisors treated in Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University from July 2011 to January 2019 were selected. The age ranged from 10 to 14 years [(12.3±1.6) years], including 11 males and 14 females. The maxillary incisors with external root resorption before treatment were included in the resorption group (21 central incisors and 22 lateral incisors), and the maxillary incisors without external root resorption were used as the control group (26 central incisors and 21 lateral incisors). Cone-beam CT was taken before treatment, immediately after treatment and one year after treatment. At the one year follow-up 15 patients were collected (10 central incisors and 12 lateral incisors in the resorption group, while 16 central incisors and 12 lateral incisors in the control group). The root length and tooth volume of maxillary incisors were measured and analyzed before canine traction, after canine traction finished and at the one year follow-up. Results: After the treatment of maxillary impacted canines, the root length and volume of the central and lateral incisors in both resorption group and control group were significantly less than that before treatment (P<0.05). At the one year follow-up, the root length and volume of the incisors (central incisors in the resorption group and the central and lateral incisors in control group) were significantly less than those immediately after impacted canine traction (P<0.05). During the canine traction, the difference of the volume change in lateral incisors between the resorption group [(17±6) mm3] and the control group [(12±5) mm3] was statistically significant (t=2.51, P<0.05). During the one year follow-up period, the difference between the changes of the root length in maxillary central incisors in the resorption group [(0.5±0.4) mm] and in the control group [(0.2±0.1) mm] was statistically significant (t=2.35, P<0.05). Conclusions: For maxillary incisors with external root resorption caused by impacted maxillary canines, the external root resorption could not stop immediately after the treatment of impacted canines. The root resorption in maxillary lateral incisors mainly occured during the traction process, while the root resorption in maxillary central incisors existed during the orthodontic treatment and in the follow-up period.
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Affiliation(s)
- W Zhou
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - L Wang
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - L Wang
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Y H Wang
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - C Y Zhao
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University & Institute of Stomatology, Nanjing Medical University, Nanjing 210029, China
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Ogawa K, Ishida Y, Kuwajima Y, Lee C, Emge JR, Izumisawa M, Satoh K, Ishikawa-Nagai S, Da Silva JD, Chen CY. Accuracy of a Method to Monitor Root Position Using a 3D Digital Crown/Root Model during Orthodontic Treatments. Tomography 2022; 8:550-559. [PMID: 35314622 PMCID: PMC8938848 DOI: 10.3390/tomography8020045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to assess the accuracy of a method of predicting post-movement root position during orthodontic treatment using a 3D digital crown/root model (3DCRM) created with pre-movement records of both cone-beam computed tomography (CBCT) and dental arch digital scans. Pre- and post-movement CBCT scans and dental arch digital scans of five patients who had completed orthodontic treatments were used in this study. The 3DCRM was superimposed onto the post-movement scanned dental arch to identify the post-movement root position (test method). Post-movement CBCT (referenced as the current method) served as the control to identify the actual post-movement root position. 3D-coordinate analysis revealed no significant differences between the test and current methods along the X and Y axes. However, the discrepancy on the Z axis (especially in cases of intrusion) was greater than that in all other directions for all three tooth types examined (p < 0.05). A strong positive correlation between the degree of discrepancy and the distance of tooth movement was observed on the Z axis (r = 0.71). The 3DCRM method showed promising potential to accurately predict root position during orthodontic treatments without the need for a second CBCT. However, root resorption, which affected the Z axis prediction, needs to be closely monitored using periapical radiographs to complement this method.
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Affiliation(s)
- Kaho Ogawa
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
- Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry Iwate Medical University, 1-3-27 Chuo-dori, Morioka 020-8505, Iwate, Japan;
| | - Yoshiki Ishida
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
- Department of Dental Materials Science, School of Life Dentistry at Tokyo, Nippon Dental University, 1-9-20, Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan
| | - Yukinori Kuwajima
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
- Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry Iwate Medical University, 1-3-27 Chuo-dori, Morioka 020-8505, Iwate, Japan;
| | - Cliff Lee
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
| | - Jacob R. Emge
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
| | - Mitsuru Izumisawa
- Division of Dental Radiology, School of Dentistry, Iwate Medical University, 1-3-27 Chuo-dori, Morioka 020-8505, Iwate, Japan;
| | - Kazuro Satoh
- Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry Iwate Medical University, 1-3-27 Chuo-dori, Morioka 020-8505, Iwate, Japan;
| | - Shigemi Ishikawa-Nagai
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
| | - John D. Da Silva
- Department of Restorative Dentistry and Biomaterials Science, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA;
| | - Chia-Yu Chen
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA; (K.O.); (Y.I.); (Y.K.); (C.L.); (J.R.E.); (S.I.-N.)
- Correspondence: ; Tel.: +1-857-576-0279
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Alkasaby AA, Shamaa MS, Abdelnaby YL. The effects of micro-osteoperforation on upper first molar root resorption and bone density after distalization by miniscrew-supported Fast Back appliance in adults: A CBCT randomized controlled trial. Int Orthod 2022; 20:100611. [PMID: 35148973 DOI: 10.1016/j.ortho.2022.100611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/07/2022] [Accepted: 01/13/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To evaluate, primary the effects of Micro-osteoperforation (MOP) on orthodontically induced inflammatory root resorption (OIIRR) of maxillary first molars, and secondary, the density of surrounding alveolar bone during distalization phase with Fast Back distalizer. MATERIALS AND METHODS Female patients between 16-20 years of age (University of Mansoura), meeting the criteria, were included between March to September 2019. They were randomly, and equally allocated into control and MOP groups. Both of them underwent distalization with Fast Back distalizer. 3MOPs were applied in the intervention group, distal to the first molars using a 3D printed guide. CBCT images were obtained before and after distalization. Apical root resorption maxillary first molars' roots, and alveolar bone density surrounding them were evaluated using independent-samples t-test. Time of distalization phase was assessed using Mann-Whitney U test. Correlation and partial correlation tests were done between resorption of roots, bone density, and time. RESULTS Screening of 50 patients, and exclusion for 30 of them were done. Only 20 subjects underwent the trial to the end. In MOP group, OIIRR of mesiobuccal roots significantly increased (MD=-0.2 (-0.34 to -0.01), P<0.05), and significantly decreased for disto-buccal roots (MD=0.6 (0.45 to 0.72), P<0.001). The second and third layers of bone density decreased significantly in MOP group (MD=116.7 (50.8 to 182.5), MD=560.4 (327.9 to 792.7) respectively, P<0.001). Time for distalization phase was significantly reduced in MOP group (P<0.001). CONCLUSIONS MOP decreased OIIRR for nearby distobuccal roots by reduction in surrounding density of bone, and increased OIIRR for the far mesiobuccal roots.
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Affiliation(s)
- Alaa A Alkasaby
- Orthodontic Department, Faculty of Dentistry, University of Mansoura, Algomhoria St., 35516 Dakahlia, Egypt.
| | - Marwa S Shamaa
- Orthodontic Department, Faculty of Dentistry, University of Mansoura, Algomhoria St., 35516 Dakahlia, Egypt
| | - Yasser L Abdelnaby
- Orthodontic Department, Faculty of Dentistry, University of Mansoura, Algomhoria St., 35516 Dakahlia, Egypt
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44
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Rabinovich IM, Snegirev MV, Golubeva SA, Markheev CI. [External cervical tooth root resorption]. Stomatologiia (Mosk) 2022; 101:73-78. [PMID: 35184538 DOI: 10.17116/stomat202210101173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
External cervical tooth root resorption is one of the most aggressive types of pathological resorption. Due to the uncontrolled growth of resorptive tissue, irreversible loss of dentin and cement occurs. To date, there is no common position regarding the etiological factor and pathogenesis of invasive cervical resorption. The histological picture is similar to some fibro-bone lesions. The treatment outcome of the pathology is difficult to predict because elimination of the causative factor is often not sufficient for resorption arrest. Only the complete elimination of resorptive tissue helps to stop the process. The report describes a clinical case of a successful treatment of invasive cervical resorption of dental hard tissues.
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Affiliation(s)
- I M Rabinovich
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - M V Snegirev
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - S A Golubeva
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - C I Markheev
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
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45
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Bliggenstorfer S, Chappuis V, von Arx T. [Misinterpretation of a periapical radiograph: the canalis sinuosus mimicking a root resorption]. Swiss Dent J 2021; 131:999-1005. [PMID: 34854290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
There is widespread knowledge that the mental foramen or incisive foramen can be projected onto tooth roots in conventional radiographs, thus simulating apical lesions. In contrast, the anatomical structure of the canalis sinuosus and its branching canals in the anterior maxilla are less known. Sometimes these bone canals mimic a dentino- or osteolysis on conventional radiographs. If these bone canals project onto the roots of the anterior maxillary teeth, there is a risk of misinterpretation as root resorption or apical periodontitis. This case report presents an incidental radiological finding. Due to a radiolucency within the root of tooth 11, root resorption was suspected. Using cone beam-computed tomography, the origin of this radiolucency was clearly identified as an anatomical structure, and the suspected diagnosis was ruled out. This case highlights the importance of the knowledge of anatomical structures to avoid misinterpretations and unnecessary treatments.
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Affiliation(s)
- Salome Bliggenstorfer
- Klinik für Oralchirurgie und Stomatologie, Zahnmedizinische Kliniken der Universität Bern
| | - Vivianne Chappuis
- Klinik für Oralchirurgie und Stomatologie, Zahnmedizinische Kliniken der Universität Bern
| | - Thomas von Arx
- Klinik für Oralchirurgie und Stomatologie, Zahnmedizinische Kliniken der Universität Bern
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46
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Nanda A, Chen PJ, Mehta S, Kalajzic Z, Dutra EH, Allareddy V, Nanda R, Yadav S. The effect of differential force system and minimal surgical intervention on orthodontic tooth movement and root resorption. Eur J Orthod 2021; 43:607-613. [PMID: 33300988 PMCID: PMC8643401 DOI: 10.1093/ejo/cjaa065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The primary objective of this study was to quantify the orthodontic tooth movement (OTM) and orthodontically induced root resorption (OIRR) with differential force system in conjunction with minimal surgical insult. MATERIAL AND METHODS 15-week-old, 48 male Wistar rats were used in the research and were randomly divided into six groups: 1. Group 1 (8 Wistar rats): OTM for 14 days with 8-g force; 2. Group 2 (8 Wistar rats): OTM for 14 days with 25-g force; 3. Group 3 (8 Wistar rats): OTM for 14 days with 100-g force; 4. Group 4 (8 Wistar rats): OTM for 14 days with 8-g force and alveolar decortications (ADs); 5. Group 5 (8 Wistar rats): OTM for 14 days with 25-g force and ADs; 6. Group 6 (8 Wistar rats): OTM for 14 days with 100-g force and ADs. A nickel-titanium spring was used to protract the molar mesially using maxillary incisors as an anchorage. ADs (minimal surgical insult) were done using a hand piece and a round bur, adjacent to the left first maxillary molar on the palatal alveolar bone. After 14 days of OTM, Wistar rats were killed and microfocus computed tomography and histological analysis were performed. RESULTS The 100-g group showed significant increase (P < 0.05) in OTM. However, with ADs, the OTM was significantly higher (P < 0.05) in 8 and 100 g. In addition, with ADs, there is significant increase (P < 0.05) in OIRR and significant decrease (P < 0.05) in bone volume fraction. Histological quantification of tartrate-resistant acid phosphatase indicated a significant increase (P < 0.05) in the number of osteoclasts with ADs when compared without ADs. CONCLUSIONS Light force in conjunction with ADs are optimal to accelerate the OTM. Additionally, ADs increases the OIRR.
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Affiliation(s)
- Anjali Nanda
- Private Practice, Haddonfield, NJ
- Division of Orthodontics, UConn Health, Farmington, CT
| | - Po-Jung Chen
- Division of Orthodontics, UConn Health, Farmington, CT
| | - Shivam Mehta
- Division of Orthodontics, UConn Health, Farmington, CT
| | - Zana Kalajzic
- Division of Oral and Maxillofacial Radiology, UConn Health, Farmington, CT
| | | | | | | | - Sumit Yadav
- Division of Orthodontics, UConn Health, Farmington, CT
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Akl HE, El-Beialy AR, El-Ghafour MA, Abouelezz AM, El Sharaby FA. Root resorption associated with maxillary buccal segment intrusion using variable force magnitudes. Angle Orthod 2021; 91:733-742. [PMID: 34270689 PMCID: PMC8549556 DOI: 10.2319/012121-62.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 05/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To compare the root resorption resulting from miniscrew-supported maxillary posterior dentoalveolar intrusion using two different force magnitudes. MATERIALS AND METHODS Adult patients with skeletal open bite, indicated for maxillary posterior dentoalveolar intrusion, were recruited and randomly assigned to the comparison or intervention groups. The comparison group involved applying 200 g of intrusive force per segment, which measured 20 g per root, while this force was 400 g per segment in the intervention group, measuring 40 g per root. RESULTS Twenty participants were included in the final analysis after 2 patients dropped out, 1 in each group, to end up with 10 subjects (200 roots) per group. There was statistically significant root resorption of 0.84 ± 0.96 mm and 0.93 ± 1.00 mm in the comparison and the intervention groups, respectively. However, there was no statistically significant difference between the groups. CONCLUSIONS Root resorption inevitably took place in association with orthodontic intrusion. However, increasing the magnitude of the intrusive force did not increase the amount of root resorption, either statistically or clinically.
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48
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Xiao S, Li L, Yao J, Wang L, Li K, Yang C, Wang C, Fan Y. Microcracks on the Rat Root Surface Induced by Orthodontic Force, Crack Extension Simulation, and Proteomics Study. Ann Biomed Eng 2021; 49:2228-2242. [PMID: 33686616 DOI: 10.1007/s10439-021-02733-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/13/2021] [Indexed: 12/12/2022]
Abstract
Root resorption is a common complication during orthodontic treatment. Microcracks occur on the root surface after an orthodontic force is applied and may be related to the root resorption caused by the orthodontic process. However, the mechanisms underlying root resorption induced by microcracks remain unclear. In this study, a rat orthodontic model was used to investigate the biological mechanisms of root resorption caused by microcracks. First, the first molar was loaded with 0.5-N orthodontic force for 7 days, and microcracks were observed on the root apex surface using a scanning electron microscope. Second, to describe the mechanical principle resulting in microcracks, a finite element model of rat orthodontics was established, which showed that a maximum stress on the root apex can cause microcrack extension. Third, after 7 days of loading in vivo, histological observation revealed that root resorption occurred in the stress concentration area and cementoclasts appeared in the resorption cavity. Finally, proteomics analysis of the root apex area, excluding the periodontal ligament, revealed that the NOX2, Aifm1, and MAPK signaling pathways were involved in the root resorption process. Microcrack extension on the root surface increases calcium ion concentrations, alters the proteins related to root resorption, and promotes cementoclast formation.
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Affiliation(s)
- Shengzhao Xiao
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Linhao Li
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Jie Yao
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Lizhen Wang
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Kaimin Li
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Chongshi Yang
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
| | - Chao Wang
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
| | - Yubo Fan
- Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
- School of Engineering Medicine, Beihang University, Beijing, 100083, China.
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Liu W, Shao J, Li S, Al-Balaa M, Xia L, Li H, Hua X. Volumetric cone-beam computed tomography evaluation and risk factor analysis of external apical root resorption with clear aligner therapy. Angle Orthod 2021; 91:597-603. [PMID: 33826698 DOI: 10.2319/111820-943.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To investigate the prevalence and severity of external apical root resorption (EARR) volumetrically with clear aligner therapy using cone-beam computed tomography (CBCT) as well as determine the possible risk factors and develop a prediction model for EARR. MATERIALS AND METHODS In this retrospective study, 320 incisors from 40 Class II patients treated with aligners (Invisalign) were included in this study. CBCT images were obtained at pretreatment (T0) and posttreatment (T1). Root volume was calculated by three-dimensional reconstruction of CBCT images, and apical tooth movement was measured from superimposed CBCT images. Changes in root volume were compared using paired t-tests, and the relationship between root volume loss and potential risk factors was analyzed by multiple linear regression. RESULTS All of the measured incisors showed root volume loss, with an average of 11.48 ± 6.70 mm3, and the prevalence of severe resorption was 0.625%. The prediction model for EARR included variables of posttreatment sagittal root position (SRP), extraction, tooth type, and apical intrusion and extrusion displacements, with an R2 of 0.51. Age, sex, duration, pretreatment SRP, attachment, advancement, and retraction movements were excluded from the model. CONCLUSIONS Most incisors showed mild to moderate resorption during aligner treatment; only a minimal percentage showed severe resorption. Posttreatment SRP (which showed the highest association with EARR), extraction, tooth type, and apical intrusion and extrusion displacements were risk factors for EARR.
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50
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Yilmaz H, Ozlu FC, Turk T, Darendeliler MA. The effect of 12 weeks of mechanical vibration on root resorption: a micro-CT study. Prog Orthod 2021; 22:28. [PMID: 34423388 PMCID: PMC8380592 DOI: 10.1186/s40510-021-00369-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 06/22/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE The aim was to investigate the effect of mechanical vibration on root resorption with or without orthodontic force application. MATERIAL AND METHODS Twenty patients who required maxillary premolar extractions as part of orthodontic treatment were randomly divided into two groups of 10: no-force group and force group. Using a split-mouth procedure, each patient's maxillary first premolar teeth were randomly assigned as either vibration or control side for both groups. A buccally directed vibration of 50 Hz, with an Oral-B HummingBird device, was applied to the maxillary first premolar for 10 min/day for 12 weeks. After the force application period, the maxillary first premolars were extracted and scanned with micro-computed tomography. Fiji (ImageJ), performing slice-by-slice quantitative volumetric measurements, was used for resorption crater calculation. Total crater volumes were compared with the Wilcoxon and Mann-Whitney U tests. RESULTS The total crater volumes in the force and no-force groups were 0.476 mm3 and 0.017 mm3 on the vibration side and 0.462 mm3 and 0.031 mm3 on the control side, respectively. There was no statistical difference between the vibration and control sides (P > 0.05). There was more resorption by volume in the force group when compared to the no-force group (P < 0.05). CONCLUSION Mechanical vibration did not have a beneficial effect on reducing root resorption; however, force application caused significant root resorption.
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Affiliation(s)
- Hakan Yilmaz
- Department of Orthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey.
| | - Fethiye Cakmak Ozlu
- Department of Orthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Tamer Turk
- Department of Orthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Mehmet Ali Darendeliler
- Department of Orthodontics, Faculty of Dentistry, The University of Sydney, Sydney, Australia
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