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Busenhart DM, Schätzle M, Eliades T, Papageorgiou SN. Long-term stability of curve of Spee depth among orthodontically treated patients: A retrospective longitudinal study. Orthod Craniofac Res 2024; 27:572-581. [PMID: 38404201 DOI: 10.1111/ocr.12756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 12/06/2023] [Accepted: 01/06/2024] [Indexed: 02/27/2024]
Abstract
OBJECTIVE The curve of Spee is deemed important characteristic of the dentition for a balanced occlusion and distribution of masticatory forces, while orthodontic levelling of an accentuated curve of Spee is generally included as a treatment goal for deepbite correction. However, relapse is often seen and can be problematic. METHODS A retrospective longitudinal study of predominantly young patients with a deep curve of Spee, who had been treated orthodontically with 0.018"-slot Edgewise fixed appliances, was performed. The depth of the curve of Spee was digitally measured before treatment (T1), at debond (T2), and an average of 7 years post-debond (T3) and analysed statistically at 5%. RESULTS A total of 157 patients were included (56.7% female; 11.6-year-old at T1), 16.6% of which were treated with premolars extractions. Non-extraction treatment reduced the curve of Spee at the first premolar from 1.87 mm (T1) to 0.22 mm (T2), which relapsed 0.12 mm (T3; P = .04). The respective depths for the second premolar were 2.0 mm (T1), reduced to 0.80 mm (T2). No significant relapse was seen for the second premolar (0.08 mm; P > .05) or the first permanent molar (0.06 mm; P > .05). No overall significant differences in absolute relapse were seen between extraction and non-extraction patients, but premolar extractions were associated with less clinically relevant relapse at the first molar (odds ratio 0.27; 95%-confidence interval 0.08-0.88; P = .003). CONCLUSION Steep curves of Spee can be satisfactorily levelled orthodontically with satisfactory stability in the long term, while premolar extractions might be associated with less relapse.
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Affiliation(s)
- Dan Mike Busenhart
- Clinic of Orthodontics and Pediatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Marc Schätzle
- Clinic of Orthodontics and Pediatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Theodore Eliades
- Clinic of Orthodontics and Pediatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Spyridon N Papageorgiou
- Clinic of Orthodontics and Pediatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
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Antonarakis GS, Zekeridou A, Kiliaridis S, Giannopoulou C. Periodontal considerations during orthodontic intrusion and extrusion in healthy and reduced periodontium. Periodontol 2000 2024. [PMID: 38831560 DOI: 10.1111/prd.12578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 04/30/2024] [Accepted: 05/13/2024] [Indexed: 06/05/2024]
Abstract
In patients with advanced periodontal disease, pathological tooth migration may occur, which may require subsequent orthodontic treatment for both aesthetic and functional purposes. When planning orthodontic treatment mechanics, intrusive or extrusive forces are frequently indicated. Understanding tissue reactions during these movements is essential for clinicians when devising a comprehensive orthodontic-periodontal treatment plan. This knowledge enables clinicians to be fully aware of and account for the potential effects on the surrounding tissues. The majority of our understanding regarding the behavior of periodontal tissues in both healthy and compromised periodontal conditions is derived from animal studies. These studies offer the advantage of conducting histological and other assessments that would not be feasible in human research. Human studies are nevertheless invaluable in being able to understand the clinically relevant response elicited by the periodontal tissues following orthodontic tooth movement. Animal and human data show that in dentitions with reduced periodontal support, orthodontic intrusion of the teeth does not induce periodontal damage, provided the periodontal tissues do not have inflammation and plaque control with excellent oral hygiene is maintained. On the contrary, when inflammation is not fully controlled, orthodontic intrusion may accelerate the progression of periodontal destruction, with bacterial plaque remnants being displaced subgingivally, leading to further loss of attachment. Orthodontic extrusion, on the other hand, does not seem to cause further periodontal breakdown in dentitions with reduced periodontal support, even in cases with deficient plaque control. This is attributed to the nature of the tooth movement, which directs any plaque remnants coronally (supragingivally), reducing the risk of adverse effects on the periodontal tissues. This specific type of tooth movement can be leveraged to benefit periodontal conditions by facilitating the regeneration of lost hard and soft periodontal tissues in a coronal direction. As a result, orthodontic extrusion can be employed in implant site development, offering an advantageous alternative to more invasive surgical procedures like bone grafting. Regardless of the tooth movement prescribed, when periodontal involvement is present, it is essential to prioritize periodontal therapy before commencing orthodontic treatment. Adequate plaque control is also imperative for successful outcomes. Additionally, utilizing light orthodontic forces is advisable to achieve efficient tooth movement while minimizing the risk of adverse effects, notably root resorption. By adhering to these principles, a more favorable and effective combined orthodontic-periodontal approach can be ensured. The present article describes indications, mechanisms, side effects, and histological and clinical evidence supporting orthodontic extrusion and intrusion in intact and reduced periodontal conditions.
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Affiliation(s)
- Gregory S Antonarakis
- Division of Orthodontics, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Alkisti Zekeridou
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Stavros Kiliaridis
- Division of Orthodontics, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Department of Orthodontics and Dentofacial Orthopaedics, University of Bern, Bern, Switzerland
| | - Catherine Giannopoulou
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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Ghislanzoni LH, Kiliaridis S, Antonarakis GS. Headgear therapy in children with Class II malocclusion and the role of compliance on treatment outcome: A nine-month randomized controlled trial. Orthod Craniofac Res 2024. [PMID: 38685769 DOI: 10.1111/ocr.12802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 05/02/2024]
Abstract
OBJECTIVES To evaluate three-dimensional movements of maxillary teeth during headgear treatment in Class II growing children, using digital analytical tools, and to determine the effects of compliance on these movements. MATERIALS AND METHODS A 9-month parallel-group randomized controlled trial was carried out on 40 children with Class II malocclusion, aged 8-12 years, half assigned to receive a cervical headgear and half to a no-treatment group, using block randomization. Subjects in the treatment group were instructed to wear the headgear for 12 hours daily and monitored using an electronic module. After 9 months, the following dental outcomes were measured: first maxillary molar distalisation, rotation, tip and torque, arch depth, and interpremolar and intermolar distances. Caregivers and participants were not blinded to group assignments, but those assessing outcomes were. Linear regression models were used to detect differences between groups and correlation coefficients to find correlations between compliance and dental outcomes. RESULTS All 40 included patients were analysed. A significant difference in molar distalisation was observed between the treatment (1.2 mm) and control groups (-0.2 mm). Arch depth change was also increased to a larger extent in the treatment groups (1.3 mm vs 0.1 mm), as was the interpremolar distance (1.9 mm vs 0.4 mm). In contrast, no significant differences in molar rotation or torque change were observed. With regard to compliance, average compliance was 55%. A significant correlation was found between molar distalisation and compliance in the treatment group. CONCLUSIONS Headgear therapy has significant effects on molar distalisation, arch depth, and arch width. Compliance has a significant positive effect on molar distalisation.
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Affiliation(s)
- Luis Huanca Ghislanzoni
- Division of Orthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Stavros Kiliaridis
- Division of Orthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
- Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Bern, Switzerland
| | - Gregory S Antonarakis
- Division of Orthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Tsukada K, Ozeki Y, Sato C, Fushima K. Clinical crown height changes in adult patients after non-extraction, orthodontic treatment: a retrospective cohort study. J Orthod 2023:14653125231217756. [PMID: 38130067 DOI: 10.1177/14653125231217756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
OBJECTIVE To assess changes in clinical crown height (CCH) in adult orthodontic patients treated by fixed appliances to distalise the molars. DESIGN Retrospective case series study. SETTING AND PATIENTS A total of 30 adults with healthy periodontal tissues who received orthodontic treatment at the Department of Orthodontics, Yokohama, Japan and its related orthodontic clinic were assessed. METHODS CCH was measured as the distance from the gingival margin to the crown plane perpendicular to the tooth axis. Treatment changes of CCH of each tooth were examined on the labial/buccal and lingual/palatal side. RESULTS In the upper dentition, on the labial/buccal side, the CCH of the lateral incisors, canines, first premolars, first molars and second molars were increased significantly (P < 0.01), with a median value of 0.41 mm, 0.43 mm, 0.28 mm, 0.43 mm and 0.55 mm, respectively. In contrast on the palatal side, the CCH of the central incisors, first molars, and second molars decreased significantly (P < 0.01), with a median value of -0.41 mm, -0.30 mm and -0.20 mm, respectively. In the lower dentition on the labial/buccal side, the CCH of the first premolars, second premolars and first molars were increased significantly, with a median value of 0.39 mm (P < 0.01), 0.43 mm (P < 0.01) and 0.19 mm (P < 0.05), respectively. The second molars exhibited a significant decrease in CCH with a median value of -0.26 mm (P < 0.05). On the lingual side, the CCH of the central incisors, lateral incisors, canines, first premolars, second premolars and first molars were increased significantly (P < 0.01), with a median value of 0.28 mm, 0.22 mm, 0.31 mm, 0.37 mm, 0.26 mm and 0.28 mm, respectively. CONCLUSION Significant differences were observed in CCH before and after treatment for many teeth, the average change was less than 0.5 mm. The impact on the long-term health of the periodontal tissue is unknown.
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Affiliation(s)
- Keizo Tsukada
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Yokohama, Kanagawa, Japan
| | - Yumi Ozeki
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Yokohama, Kanagawa, Japan
| | - Chikatoshi Sato
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Yokohama, Kanagawa, Japan
| | - Kenji Fushima
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Yokohama, Kanagawa, Japan
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Meijer HJA, Stellingsma K, Vissink A, Raghoebar GM. Two adjacent implant-supported restorations in the aesthetic region: A 10-year prospective case series. Clin Implant Dent Relat Res 2023; 25:1216-1224. [PMID: 37670074 DOI: 10.1111/cid.13274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/01/2023] [Accepted: 08/21/2023] [Indexed: 09/07/2023]
Abstract
INTRODUCTION The treatment outcome of two adjacent implant-supported restorations in the maxillary aesthetic region was assessed regarding peri-implant soft and hard tissues, and satisfaction during a 10-year follow-up period. METHODS Twenty patients missing two adjacent teeth in the maxillary aesthetic region and treated with two implant-supported restorations were followed prospectively. The patients' clinical and radiographic parameters, as well as their satisfaction, were scored for a 10-year follow-up period. RESULTS Seventeen patients' data were available for the 10-year follow-up. The survival rate of the implants and restorations was 100%. The 10-year mean peri-implant bone change at the side facing the adjacent tooth was +0.11 ± 0.57 mm and at the side facing the adjacent implant was -0.08 ± 0.50 mm. The peri-implant soft tissues were healthy and the patients' satisfaction was high, but the papilla-index showed compromised inter-implant papillae and low Pink Esthetic Scores. These figures were of the same magnitude at all time points. CONCLUSION While it is difficult to obtain sufficient inter-implant papillae and satisfactory Pink Esthetic Scores, the initial treatment results remained stable and the patients were satisfied with the final result throughout the 10-year follow-up period.
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Affiliation(s)
- Henny J A Meijer
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Restorative Dentistry, Dental School, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Kees Stellingsma
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Arjan Vissink
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gerry M Raghoebar
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Natsumeda G, Miranda F, Massaro C, Lauris JRP, Garib D. Aging changes in maxillary anterior teeth in untreated individuals: an observational longitudinal study. Prog Orthod 2023; 24:26. [PMID: 37574532 PMCID: PMC10423712 DOI: 10.1186/s40510-023-00478-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/21/2023] [Indexed: 08/15/2023] Open
Abstract
OBJECTIVE The aging of the occlusion and tooth wears influence the smile design This study aimed at evaluating the aging changes of maxillary anterior teeth in nontreated subjects. METHODS The sample comprised dental models of 23 subjects (13 male, 10 female) with normal occlusions, taken at 13 (T1), 17 (T2) and 61 (T3) years of age. The following variables were measured in the maxillary anterior teeth using digital dental models: crown width/height proportion, anterior view width, crown angulation, gingival and incisal steps between central/lateral incisors and central incisors/canines. Interphase comparisons were evaluated using repeated measures analysis of variance followed by Tukey tests or Friedman tests. Sexual differences were evaluated using t tests (P < 0.05). RESULTS From 13 to 61 years of age, a decrease of crown width/height proportion (P = 0.008 and P = < 0.001, for the lateral incisor and canines, respectively) and mesiodistal angulation (P = < 0.001, P = 0.001 and P = 0.025 for the central incisor, lateral incisor and canines, respectively) of the maxillary anterior teeth were observed. The steps of the gingival margin and the incisal steps decreased with aging. CONCLUSIONS From adolescence to late adulthood, untreated individuals with normal occlusions demonstrated changes in the maxillary anterior teeth that may impair the smile esthetics and attractiveness.
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Affiliation(s)
- Gabriela Natsumeda
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP 17012-901 Brazil
| | - Felicia Miranda
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP 17012-901 Brazil
| | - Camila Massaro
- Department of Orthodontics, School of Dentistry, Federal University of Goiás, Goiânia, Goiás Brazil
| | | | - Daniela Garib
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP 17012-901 Brazil
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, SP Brazil
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Schuepbach I, Vento C, Denes BJ, Antonarakis GS, Kiliaridis S. Longitudinal changes of the insertion of the maxillary labial frenum in children and adolescents undergoing orthodontic treatment. Am J Orthod Dentofacial Orthop 2023; 163:786-792. [PMID: 36653243 DOI: 10.1016/j.ajodo.2022.06.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 01/19/2023]
Abstract
INTRODUCTION This study aimed to evaluate potential vertical changes in the position of the maxillary labial frenum (MLF) insertion in growing children and to compare these changes to the vertical growth of the dentoalveolar process and lower facial third. METHODS This retrospective longitudinal study investigated records of 33 healthy children. Dental casts, lateral cephalograms, and photographs were evaluated at pretreatment (T0), posttreatment (T1), and 3-5 years into retention (T2). To evaluate the vertical changes of MLF insertion in relation to the vertical growth of the dentoalveolar process, the palatal plane (PP) was used as a reference. These changes were also compared between different MLF typologies (ascribed as thin or fibrous). RESULTS The distance from MLF to PP only slightly increased from T0 to T2 by 0.6 ± 0.5 mm (P <0.001), whereas the distance between the incisal edge and PP increased significantly from T0 to T2 by 2.6 ± 0.8 mm (P <0.001). A positive correlation was found (r = 0.94; P <0.001) between the changes from the incisal edge to the PP and the MLF to the incisal edge between T0 and T2. No correlation was found between the change from the incisal edge to the PP and MLF to PP between T0 and T2. Thin MLF types showed a larger increase in distance from their insertion to the incisal edge (2.6 ± 0.8 mm) than thick MLF types (1.8 ± 0.7; P <0.03). CONCLUSIONS The MLF remains stable compared with the PP, whereas the maxillary incisal edge moves away from the PP, indicating increased vertical growth of the alveolar process. Dentists should be aware of those changes before performing interventions such as unnecessary frenectomies.
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Affiliation(s)
- Ian Schuepbach
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland.
| | - Cristina Vento
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - Balazs J Denes
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - Gregory S Antonarakis
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - Stavros Kiliaridis
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland; Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland; Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Bern, Switzerland
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Sauvin G, Nurdin N, Bischof M, Kiliaridis S. Assessment and aesthetic impact of a long‐term vertical discrepancy between the single anterior maxillary implant‐supported crown and adjacent teeth: A retrospective cross‐sectional study. Clin Exp Dent Res 2022; 8:1109-1116. [PMID: 36029165 PMCID: PMC9562563 DOI: 10.1002/cre2.629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/23/2022] [Accepted: 06/26/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Grégoire Sauvin
- Division of Orthodontics University Clinics of Dental Medicine Geneva Switzerland
| | - Nathalie Nurdin
- Swiss Dental Clinics Group Ardentis Clinique Dentaire Lausanne Lausanne Switzerland
| | - Mark Bischof
- Swiss Dental Clinics Group Ardentis Clinique Dentaire Lausanne Lausanne Switzerland
| | - Stavros Kiliaridis
- Division of Orthodontics University Clinics of Dental Medicine Geneva Switzerland
- Department of Orthodontics and Dentofacial Orthopedics University of Bern Bern Switzerland
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Papalexopoulos D, Samartzi TK, Tsirogiannis P, Sykaras N, Sarafianou A, Kourtis S, Mikeli A. Impact of maxillofacial growth on implants placed in adults: A narrative review. J ESTHET RESTOR DENT 2022; 35:467-478. [PMID: 35929493 DOI: 10.1111/jerd.12950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine the effect of lifetime maxillofacial changes on dental implants placed in adults, analyze the clinical implications of these changes, identify prognostic factors, and offer possible solutions. OVERVIEW The relationship between implant placement and maxillofacial changes, occurring during not only the active growth period but also the entire span of adulthood, has not been extensively examined. Vertical differences between implants and adjacent teeth due to the ankylotic behavior of the former might be observed at any age and endanger restoration biologically, functionally, and esthetically. Regarding interproximal contacts, firm contact loss may occur within a few months after restoration, resulting in food impaction. Many prognostic factors have been reported, but most do not exhibit a statistically significant association with implant infraocclusion and interproximal contact loss. Incorporation of alternative solutions, accurate treatment planning, strict recall protocols, and retrievability of implant-supported restorations can facilitate efficient management of complications. CONCLUSION Maxillomandibular changes throughout adulthood may lead to complications such as implant infraocclusion and interproximal contact loss. Rehabilitation of edentulism should be characterized by well-designed and flexible treatment plans to resolve long-term complications efficiently. Further long-term clinical studies are needed to identify other risk factors. CLINICAL SIGNIFICANCE Treatment plans for implant therapy should be reconsidered for adults. Careful patient monitoring and early intervention are essential for securing treatment outcomes.
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Affiliation(s)
- Dimokritos Papalexopoulos
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
| | | | - Panagiotis Tsirogiannis
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
| | - Nikitas Sykaras
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
| | - Aspasia Sarafianou
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
| | - Stefanos Kourtis
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
| | - Aikaterini Mikeli
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Zografou, Greece
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Application Research of Tooth Arrangement Based on Rotation Matrix Calculation and Resistance Detection in Oral. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:4675181. [PMID: 35634084 PMCID: PMC9142327 DOI: 10.1155/2022/4675181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/18/2022] [Accepted: 04/28/2022] [Indexed: 12/04/2022]
Abstract
The goal of this research was to provide a new approach for analyzing orthodontic teeth arrangement inside oral depending on the rotation matrix computation and resistance detection. The present method includes the following operations within a certain therapy period: first three-dimensional positions of the tooth were evaluated with a pierced laser beam and a three-dimensional system of surface-scanning. Second, the three-dimensional shape data was automatically registered at maxillary 1st molars, and methods of coordinate had been normalized. Third, a translation vector and rotation matrix had been evaluated from automatic registration of two position data of a particular tooth. Fourth, the limited spiral axes of teeth had been measured as the zero rotational dislocation locus; and impressions for a model of the dental cast had been taken at five different points: shortly before and after device was fitted, and ten days, one month, and two months after the treatment started. The results showed that existing analysis approach could more quickly classify a specific tooth's movement by spinning all over and translating along a finite helical axis. It can provide statistical visual three-dimensional data on complex tooth arrangement throughout orthodontic therapy.
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Winitsky N, Naimi-Akbar A, Nedelcu R, Jemt T, Smedberg JI. 3-D tooth movement adjacent to single anterior implants and esthetic outcome. A 14- to 20-year follow-up study. Clin Oral Implants Res 2021; 32:1328-1340. [PMID: 34403160 DOI: 10.1111/clr.13833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To report three-dimensional (3-D) movement of teeth adjacent to single-implant crowns (SICs) in the anterior maxilla and to relate the findings to patient characteristics and esthetic outcome. MATERIALS AND METHODS 3-D movements of teeth adjacent to anterior maxillary SICs were measured in 30 patients with original SICs in function after 14-20 years. The movements were related to facial type, lower anterior facial height (LAFH), age at crown delivery, sex, the position of the implant, implant occlusion, cause of tooth loss, follow-up period, orthodontic treatment prior to implant placement, and marginal bone-level changes. The esthetic outcome and quality were assessed using Visual Analog scale (VAS) and California Dental Association (CDA) index. RESULTS 3-D movement of adjacent teeth between 0 and 2.5 mm was observed at follow-up with incisal and palatal movement being most pronounced. Incisal tooth movement of >1 mm was observed in 30% of the patients and was significantly associated with LAFH ≥70 mm. VAS rating associated poorly between patients and clinicians with scores of >80% in 63% and 20%, respectively. The CDA rating was assessed as satisfactory in 87% of the patients. CONCLUSIONS Significantly more extensive infraposition was observed in patients with SICs without occlusion, other causes of tooth loss than trauma, implant in lateral incisor and canine position, and a LAFH of ≥70 mm. Although infraposition occurs, patients are highly satisfied with the esthetics of their implants and the esthetic results are valued as higher by patients than dentists.
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Affiliation(s)
- Nicole Winitsky
- Department of Prosthetic Dentistry, Folktandvården Eastmaninstitutet, Folktandvården Stockholms län AB, Stockholm, Sweden.,Division of Prosthetic Dentistry, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Aron Naimi-Akbar
- Health Technology Assessment-Odontology (HTA-O), Malmö University, Malmö, Sweden.,Department of Oral and Maxillofacial Surgery, Folktandvården Eastmaninstitutet, Folktandvården Stockholms län AB, Stockholm, Sweden.,Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Robert Nedelcu
- Department of Surgical Sciences, Plastic, Oral, and Maxillofacial Surgery, Uppsala University, Uppsala, Sweden
| | - Torsten Jemt
- Department of Prosthetic Dentistry/Dental Material Science, Institute of Odontology, Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden.,Brånemark Clinic, Public Dental Health Service, Region of Västra Götaland, Sweden
| | - Jan-Ivan Smedberg
- Department of Prosthetic Dentistry, Folktandvården Eastmaninstitutet, Folktandvården Stockholms län AB, Stockholm, Sweden.,Division of Prosthetic Dentistry, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
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12
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Ozeki Y, Ozaki H, Fushima K. Change in clinical crown height in adult patients treated by means of the multi-bracket appliance with extraction of four first premolars. J Orthod 2021; 48:371-382. [PMID: 34105424 DOI: 10.1177/14653125211010815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the gingival condition due to adult orthodontic treatment using the clinical crown height (CCH) as an index. DESIGN Retrospective study. SETTING Department of Orthodontics at a university. PARTICIPANTS A total of 21 adult female patients with healthy periodontal tissue were treated by means of the multi-bracket appliance with extraction of four first premolars. METHODS Three-dimensional (3D) digital dental models were reconstructed to assess the vertical movement of the free gingival margin caused by adult orthodontic treatment. Pre- and post-treatment CCH were measured, and changes in CCH due to treatment were examined. RESULTS The change in CCH by orthodontic treatment was able to be assessed objectively using 3D digital models of the dental casts. In the upper dentition, a significant reduction in CCH was found on the labial and lingual sides of the central incisor, with a mean of -0.28 mm and -0.34 mm, respectively (P < 0.001). In contrast, a significant increase in CCH was found on the labial side of the lateral incisor with a mean of 0.75 mm (P < 0.001). In the lower dentition, CCH on the lingual side of the canine, the second premolar and the first molar increased significantly (P < 0.001), with a mean of 0.41 mm, 0.45 mm and 0.50 mm, respectively. For the buccal side, the second premolar showed a significant increase in CCH with a mean of 0.61 mm (P < 0.001). CONCLUSION By using the CCH as an index, it was possible to assess the gingival condition after active orthodontic treatment.
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Affiliation(s)
- Yumi Ozeki
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan
| | - Hiroya Ozaki
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan
| | - Kenji Fushima
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan
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Wittneben JG, Igarashi K, Brägger U, Daniel B, Schimmel M, Wismeijer D. Vertical eruption of anterior maxillary teeth adjacent to single-implant-supported crowns: An assessment after a 3-year follow-up period. J Prosthet Dent 2021; 128:605-610. [PMID: 33678439 DOI: 10.1016/j.prosdent.2020.07.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM Vertical eruption of teeth adjacent to an implant has been reported clinically and might affect the esthetic outcome over time. The prevalence of the problem is unclear. PURPOSE The purpose of this prospective clinical trial was to evaluate the vertical eruption of anterior maxillary teeth adjacent to single-implant crowns after a 3-year follow-up period. MATERIAL AND METHODS Thirty single dental implants were inserted in maxillary anterior sites including the first premolar. The mean age of the participants at implant-supported crown insertion was 48.4 years (range 23 to 79 years). Each implant was restored with a 1-piece screw-retained ceramic single crown. The vertical changes of 60 adjacent anterior maxillary teeth were evaluated from periapical radiographs and casts at baseline, 6, 12, and 36 months. RESULTS A global ANOVA test showed statistically significant differences for the outcomes of the distance-implant platform and cement-enamel junction (DPC) (P<.001), crown length distal (P=.021) and mesial (P=.035), implant crown length (P=.022), and incisal edge to edge (P<.001). CONCLUSIONS Continuous vertical tooth eruption next to a single dental implant was observed in adult participants.
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Affiliation(s)
- Julia G Wittneben
- Research Associate and Senior Lecturer, Department of Reconstructive Dentistry & Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Lecturer, Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Mass.
| | - Kensuke Igarashi
- Assistant Professor, Department of Life Science Dentistry, The Nippon Dental University, Niigata, Japan
| | - Urs Brägger
- Full Professor and Chair, Department of Reconstructive Dentistry & Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Buser Daniel
- Professor Emeritus, Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Martin Schimmel
- Full Professor and Head of the Department Gerodontology, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Daniel Wismeijer
- Full Professor, Department of Oral Implantology and Prosthetic Dentistry, ACTA, University of Amsterdam and VU University, Amsterdam, the Netherlands
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Wiedemann C, Pink C, Daboul A, Samietz S, Völzke H, Schulz-Kornas E, Krey KF, Holtfreter B, Kocher T. Is Continuous Eruption Related to Periodontal Changes? A 16-Year Follow-up. J Dent Res 2021; 100:875-882. [PMID: 33655796 PMCID: PMC8258728 DOI: 10.1177/0022034521999363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aims of this study were to 1) determine if continuous eruption occurs in the maxillary teeth, 2) assess the magnitude of the continuous eruption, and 3) evaluate the effects of continuous eruption on the different periodontal parameters by using data from the population-based cohort of the Study of Health in Pomerania (SHIP). The jaw casts of 140 participants from the baseline (SHIP-0) and 16-y follow-up (SHIP-3) were digitized as 3-dimensional models. Robust reference points were set to match the tooth eruption stage at SHIP-0 and SHIP-3. Reference points were set on the occlusal surface of the contralateral premolar and molar teeth, the palatal fossa of an incisor, and the rugae of the hard palate. Reference points were combined to represent 3 virtual occlusal planes. Continuous eruption was measured as the mean height difference between the 3 planes and rugae fix points at SHIP-0 and SHIP-3. Probing depth, clinical attachment levels, gingiva above the cementoenamel junction (gingival height), and number of missing teeth were clinically assessed in the maxilla. Changes in periodontal variables were regressed onto changes in continuous eruption after adjustment for age, sex, number of filled teeth, and education or tooth wear. Continuous tooth eruption >1 mm over the 16 y was found in 4 of 140 adults and averaged to 0.33 mm, equaling 0.021 mm/y. In the total sample, an increase in continuous eruption was significantly associated with decreases in mean gingival height (B = -0.34; 95% CI, -0.65 to -0.03). In a subsample of participants without tooth loss, continuous eruption was negatively associated with PD. This study confirmed that continuous eruption is clearly detectable and may contribute to lower gingival heights in the maxilla.
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Affiliation(s)
- C Wiedemann
- Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, University Medicine Greifswald, Greifswald, Germany
| | - C Pink
- Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, University Medicine Greifswald, Greifswald, Germany
| | - A Daboul
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - S Samietz
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - H Völzke
- Institute for Community Medicine, SHIP/Clinical-Epidemiological Research, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - E Schulz-Kornas
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Leipzig, Germany.,Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - K F Krey
- Department of Orthodontics and Dentofacial Orthopaedics, University Medicine Greifswald, Greifswald, Germany
| | - B Holtfreter
- Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, University Medicine Greifswald, Greifswald, Germany
| | - T Kocher
- Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, University Medicine Greifswald, Greifswald, Germany
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15
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Mijiritsky E, Badran M, Kleinman S, Manor Y, Peleg O. Continuous tooth eruption adjacent to single-implant restorations in the anterior maxilla: aetiology, mechanism and outcomes – A review of the literature. Int Dent J 2020; 70:155-160. [DOI: 10.1111/idj.12549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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16
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Meijndert CM, Raghoebar GM, Santing HJ, Vissink A, Meijer HJA. Performance of bone-level implants with conical connections in the anterior maxilla: A 5-year prospective cohort study. Clin Oral Implants Res 2019; 31:173-180. [PMID: 31677294 DOI: 10.1111/clr.13553] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To assess clinical, radiographic and aesthetic outcomes, and satisfaction of patients treated with single implant restorations in the maxillary aesthetic region 5 years after final restoration. MATERIAL AND METHODS Sixty patients (29 male/31 female, mean age 37 years) with a missing anterior tooth in the maxilla (39 central incisors/10 lateral incisors/5 cuspids/6 first premolars) received a bone-level implant with conical connection. In 29 patients, a bone augmentation procedure was necessary before implant placement (autogenous bone grafts mixed with spongiosa granules). All implants (12 with 3.3 mm diameter/ 48 with 4.1 mm diameter) were loaded after 3 months of submerged healing. The restoration consisted of an individually designed full-zirconia abutment veneered with porcelain. Follow-up with clinical and radiographic assessment was conducted until 60 months after the final restoration. Aesthetic outcome of the restoration was determined with the Pink Esthetic Score-White Esthetic Score (PES-WES). Patient satisfaction was assessed with a VAS scale and satisfaction questionnaire. RESULTS Fifty patients completed the 5-year follow-up. Implant survival was 100%, restoration survival 98%. Mean bone-level change was -0.13 ± 0.66 mm with a median (IQR) pocket probing depth of 2.75 [2.25; 3.25]. The mean PES and WES scores were 6.6 ± 1.7 and 7.8 ± 1.5, respectively. Patient satisfaction was high (92.1 ± 7.8 on 100 mm VAS scale). There were no differences between patients with or without a bone augmentation procedure. CONCLUSION Bone-level implants with a conical connection are a reliable treatment option in single-tooth replacements in the maxillary aesthetic zone.
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Affiliation(s)
- Caroliene M Meijndert
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Gerry M Raghoebar
- Department of Implant Dentistry, Dental School, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Hendrik J Santing
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Arjan Vissink
- Department of Implant Dentistry, Dental School, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Henny J A Meijer
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Department of Implant Dentistry, Dental School, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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17
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Nilsson A, Johansson L, Stenport VF, Wennerberg A, Ekfeldt A. Infraposition of anterior maxillary implant‐supported single‐tooth restorations in adolescent and adult patients—A prospective follow‐up study up to 6 years. Clin Implant Dent Relat Res 2019; 21:953-959. [DOI: 10.1111/cid.12818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/31/2019] [Accepted: 06/16/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Andrée Nilsson
- Division of Prosthetic Dentistry, Maxillofacial UnitHalmstad Hospital Halmstad Sweden
- Department of Prosthodontics/Dental materials science, Institute of Odontology, Sahlgrenska AcademyGöteborg University Sweden
| | - Lars‐åke Johansson
- Division of Prosthetic Dentistry, Maxillofacial UnitHalmstad Hospital Halmstad Sweden
- Department of Periodontology, Faculty of OdontologyMalmö University Malmö Sweden
| | - Victoria F. Stenport
- Department of Prosthodontics/Dental materials science, Institute of Odontology, Sahlgrenska AcademyGöteborg University Sweden
| | - Ann Wennerberg
- Department of Prosthodontics/Dental materials science, Institute of Odontology, Sahlgrenska AcademyGöteborg University Sweden
| | - Anders Ekfeldt
- Department of Prosthetic Dentistry and Oral Function, Faculty of Dentistry, Institute of Clinical DentistryUniversity of Oslo Oslo Norway
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18
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Jonasson G, Skoglund I, Rythén M. The rise and fall of the alveolar process: Dependency of teeth and metabolic aspects. Arch Oral Biol 2018; 96:195-200. [PMID: 30292055 DOI: 10.1016/j.archoralbio.2018.09.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/11/2018] [Accepted: 09/25/2018] [Indexed: 11/25/2022]
Abstract
The alveolar bone has a unique capacity to follow the teeth's movements. It is formed around erupting teeth and their periodontal ligaments: the more the teeth have erupted, the larger the alveolar process. Throughout life the teeth erupt and migrate in an occlusal and mesial direction to compensate for attrition, an evolutionary trait. After tooth extraction, the alveolar process is resorbed to varying degrees. The mandibular alveolar bone mirrors skeletal bone condition. Due to fast bone turnover (which is the fastest in the whole skeleton), low bone mass and increased fracture risk may first be seen here. If a periapical radiograph of the mandibular premolars shows a dense trabeculation with well-mineralized trabeculae and small intertrabecular spaces, it is a reliable sign of normal skeletal bone density (BMD) and low skeletal fracture risk, whereas a sparse trabecular pattern indicates osteopenia and high fracture risk. The bone turnover rate in the mandible is twice that of the maxilla, and may, hypothetically, play a role in the development of osteonecrosis of the jaw (ONJ), which has been found mainly in the mandibular alveolar process?
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Affiliation(s)
- Grethe Jonasson
- R & D Public Dental Service, Region Västra Götaland, Sweden; Dept. of Behavioral and Community Dentistry, Institute of Odontology at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Ingmarie Skoglund
- R & D Public Dental Service, Region Västra Götaland, Sweden; Department of Public Health and Community Medicine/Primary Health Care, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Marianne Rythén
- R & D Public Dental Service, Region Västra Götaland, Sweden; Specialist Clinic for Pediatric Dentistry, Public Dental Service, Mölndal, Sweden.
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