1
|
Allaberdiyev M, Avsever İH, Akyol M, Ayran Ş, Öztürk HP, Özarslantürk S. Retrospective evaluation and descriptive analysis of the prevalence of anatomical structures and variations in CBCT images before dental implant planning in a group Turkish population, part I. Surg Radiol Anat 2024; 46:1081-1091. [PMID: 38847824 DOI: 10.1007/s00276-024-03396-9] [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: 02/16/2024] [Accepted: 05/21/2024] [Indexed: 07/03/2024]
Abstract
PURPOSE The aim of this study is to emphasize the importance of using cone-beam computed-tomography in order to determine the anatomical structures and their variations before the treatment in patients who apply to the dentist clinic for implant treatment. METHODS In the study, CBCT images of 500 adult patients (240 female and 260 male), aged between 21 and 82 years, who applied for implant treatment due to missing teeth, were retrospectively analyzed. Anatomical structures and variations such as nasopalatine canal(NPC), canalis sinuosus(CS), antral alveolar artery(AAA), were evaluated in multiplanar reformation(MPR) sections which are axial, sagittal and coronal can be viewed in consistence with each other. RESULTS The incidence of anatomical variation of CS in the right region was similar according to gender. The "Funnel" appearance of the NPC shape was found most common shape in both female and male patients (n = 89; 37.1% for females and n = 71; 27.3% for males). CONCLUSION CBCT has become the most popular 3D imaging method in dental practice especially for planning dental implants. Understanding the relationship with important anatomical structures before implant applications is crucial in dealing with potential complications that may arise afterward. Assessing significant anatomical structures by CBCT and taking precautions against possible risks facilitate the work of dentists during and after procedures.
Collapse
Affiliation(s)
- Merdan Allaberdiyev
- Gulhane Faculty of Dentistry, Department of Oral and DentoMaxillofacial Radiology, University of Health Sciences, Ankara, Turkey
| | - İsmail Hakan Avsever
- Gulhane Faculty of Dentistry, Department of Oral and DentoMaxillofacial Radiology, University of Health Sciences, Ankara, Turkey
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, University of East Mediterranean, Gazi Mağusa, Cyprus
| | - Mesut Akyol
- Department of Biostatistics, University of Yıldırım Beyazıt, Ankara, Turkey
| | - Şükran Ayran
- Gulhane Faculty of Dentistry, Department of Oral and DentoMaxillofacial Radiology, University of Health Sciences, Ankara, Turkey
| | - Hilal Peker Öztürk
- Gulhane Faculty of Dentistry, Department of Oral and DentoMaxillofacial Radiology, University of Health Sciences, Ankara, Turkey.
| | - Savaş Özarslantürk
- Gulhane Faculty of Dentistry, Department of Oral and DentoMaxillofacial Radiology, University of Health Sciences, Ankara, Turkey
| |
Collapse
|
2
|
Oliveira-Santos N, Beersingh APHA, Felizardo HMA, Groppo FC, Gaêta-Araujo H. Association between maxillary sinus floor perforation by dental implants and mucosal thickening: A cone-beam computed tomography study. J Dent 2024; 144:104963. [PMID: 38522636 DOI: 10.1016/j.jdent.2024.104963] [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: 01/16/2024] [Revised: 02/22/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024] Open
Abstract
OBJECTIVE To investigate the association of perforation of the maxillary sinus floor by dental implants with mucosal thickening and to describe its characteristics in perforated cases. STUDY DESIGN One-hundred and twenty-nine maxillary sinuses of 93 patients presenting 202 dental implants in the maxillary posterior region were retrospectively assessed in cone-beam computed tomography scans and classified according to maxillary sinus perforation, bone graft, mucosal thickening, and mucosal appearance. Logistic regression determined the chance of mucosal thickening in perforated maxillary sinuses. The chi-square test compared categorical variables between maxillary sinus perforated or not by implants and maxillary sinus with or without mucosal thickening. The significance level assumed was 5 % (α = 0.05). RESULTS There was perforation of 60 maxillary sinuses floor (46.5 %) by 74 dental implants. The chance of mucosal thickening was higher when the implant tip was trespassing on the maxillary sinus floor (p < 0.001). There was a significant association between maxillary sinus mucosal thickening and perforation by a dental implant with the tip trespassing the maxillary sinus floor (p < 0.05). CONCLUSION Maxillary sinus mucosal thickening is associated with sinus floor perforation by dental implants and does not depend on the number of implants perforating it. CLINICAL RELEVANCE There is an association between dental implants' perforation of the maxillary sinus floor and the thickening of the maxillary sinus. In those cases, the appearance of the mucosa thickening may be irregular, local, or total opacification of the sinus cavity.
Collapse
Affiliation(s)
- Nicolly Oliveira-Santos
- Department of Oral Surgery and Stomatology, Division of Oral Diagnostic Sciences, School of Dental Medicine, University of Bern, Bern, Switzerland; Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil.
| | | | | | - Francisco Carlos Groppo
- Department of Biosciences, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Hugo Gaêta-Araujo
- Department of Stomatology, Public Health, and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, Sao Paulo, Brazil
| |
Collapse
|
3
|
Rizzo G, Prado MC, Rigo L. Prevalence of dental implant positioning errors: A cross-sectional study. Imaging Sci Dent 2022; 52:343-350. [PMID: 36605853 PMCID: PMC9807798 DOI: 10.5624/isd.20220059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/11/2022] [Accepted: 06/14/2022] [Indexed: 01/09/2023] Open
Abstract
Purpose This study evaluated the prevalence of dental implant positioning errors and the most frequently affected oral regions. Materials and Methods A sample was obtained of CBCT images of 590 dental implants from 230 individuals who underwent diagnosis at a radiology center using cone-beam computed tomography from 2017 to 2020. The following variables were considered: thread exposure, violation of the minimum distance between 2 adjacent implants and between the implant and tooth, and implant contact with anatomical structures. Descriptive data analysis and the Pearson chi-square test (P<0.05) were performed to compare findings according to mouth regions. Results Most (74.4%) of the 590 implants were poorly positioned, with the posterior region of the maxilla being the region most frequently affected by errors. Among the variables analyzed, the most prevalent was thread exposure (54.7%), followed by implant contact with anatomical structures, violation of the recommended distance between 2 implants and violation of the recommended distance between the implant and teeth. Thread exposure was significantly associated with the anterior region of the mandible (P<0.05). The anterior region of the maxilla was associated with violation of the recommended tooth-implant distance (P<0.05) and the recommended distance between 2 adjacent implants (P<0.05). Implant contact with anatomical structures was significantly more likely to occur in the posterior region of the maxilla (P<0.05). Conclusion Many implants were poorly positioned in the posterior region of the maxilla. Thread exposure was particularly frequent and was significantly associated with the anterior region of the mandible.
Collapse
Affiliation(s)
- Gabriel Rizzo
- Faculty of Odontology, Meridional Faculty, Passo Fundo, RS, Brazil
| | - Mayara Colpo Prado
- Graduate Program in Dentistry, Meridional Faculty, Passo Fundo, RS, Brazil
| | - Lilian Rigo
- Graduate Program in Dentistry, Meridional Faculty, Passo Fundo, RS, Brazil
| |
Collapse
|
4
|
Park DU, Kim JY, Lee JR, Kim HS, Sim HY, Lee H, Han YS. Screw-and-cement–retained prosthesis versus cement-retained prosthesis: Which is more appropriate for the upper premolar area? J Dent Sci 2022; 17:1553-1558. [PMID: 36299302 PMCID: PMC9588807 DOI: 10.1016/j.jds.2022.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/15/2022] [Indexed: 12/03/2022] Open
Abstract
Background/purpose The narrow alveolar ridge in the maxillary premolars area limits the angle of implant placement and the shape of the prosthesis. The aim of this study was to evaluate which implant prosthesis, screw-and-cement-retained prosthesis (SCRP) or cement-retained prosthesis (CRP), was more suitable for the maxillary premolar area. Materials and methods We conducted virtual implantation on 58 implant images from 47 patients obtained using cone beam computed tomography (CBCT). The width and buccal inclination of the alveolar bone, the angulation of the implant fixture, and the angulation of abutment were measured and calculated. Results We determined that SCRP was feasible in 52% and 78.8% of first and second premolar areas, respectively. There was a positive relationship between the feasibility of SCRP and the premolar region in general (P = 0.031), although SCRP was more likely to be a possibility in the second premolar area. On multiple logistic regression analysis, the difference in the angle between the axis of the prosthesis and the axis of the alveolar bone (RA) was significantly associated with the type of prosthesis (P = 0.001). The RA was significantly higher for CRP implants (OR = 1.885; 95% CI: 1.31 to 2.70). Conclusion SCRP is not always feasible in the maxillary premolar area, especially in the first premolar area. If the difference between the angle of the axis of the prosthesis and the axis of the alveolar bone is large, it may be necessary for the clinician to consider CRP in the treatment planning stage.
Collapse
|
5
|
Yeap CW, Danh D, Chan J, Parashos P. Examination of Canalis Sinuosus using Cone Beam Computed Tomography in an Australian Population. Aust Dent J 2022; 67:249-261. [PMID: 35285958 DOI: 10.1111/adj.12910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/22/2022] [Accepted: 03/09/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Canalis sinuosus (CS) and its relationship with adjacent teeth is relevant for surgery in the anterior maxilla. Therefore, the aim of this study was to report the prevalence, characteristics, and variations of CS. METHODS Cone beam computed tomography (CBCT) scans of the anterior maxilla of 201 patients were reviewed. CS and the adjacent teeth were analysed by age, sex, and scan resolution, using analysis of variance, chi-squared and Fisher's exact tests. The widest and narrowest diameters of CS, and distance to tooth apex (DTA), were compared by quadrant, closest tooth, and location, and the associations were examined statistically with P < 0.05. RESULTS In the 201 scans, 412 CS were identified in 198 patients associated with 395 different teeth. Mean widest diameter was 1.08 ± 0.39 mm (range: 0.42-2.60 mm), while the narrowest diameter was 0.71 ± 0.26 mm (range: 0.25-1.59 mm), and mean DTA of 2.16 ±1.25 mm (range: 0-6.22 mm). CS detection was significantly lower with CBCT taken at resolution size of 0.250 voxels (P = 0.02). CONCLUSIONS CS was very common in the anterior maxilla. Clinicians would be well advised to identify this anatomical structure using CBCT before undertaking any surgery in the anterior maxilla. © 2022 Australian Dental Association.
Collapse
Affiliation(s)
- Chee Wei Yeap
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Victoria, Australia
| | - Dara Danh
- Clayray Dental Radiology, 24 Collins St, Melbourne Victoria, Australia; and Melbourne Dental X-ray, 723 Swanston St, Carlton, Victoria, Australia
| | - Julius Chan
- Clayray Dental Radiology, 24 Collins St, Melbourne Victoria, Australia; and Melbourne Dental X-ray, 723 Swanston St, Carlton, Victoria, Australia
| | - Peter Parashos
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Victoria, Australia
| |
Collapse
|
6
|
Safi Y, Amid R, Zadbin F, Ghazizadeh Ahsaie M, Mortazavi H. The occurrence of dental implant malpositioning and related factors: A cross-sectional cone-beam computed tomography survey. Imaging Sci Dent 2021; 51:251-260. [PMID: 34621652 PMCID: PMC8479431 DOI: 10.5624/isd.20200331] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/18/2021] [Accepted: 02/24/2021] [Indexed: 12/22/2022] Open
Abstract
Purpose Dental implants are widely used for the rehabilitation of edentulous sites. This study investigated the occurrence of dental implant malpositioning as shown on post-implantation cone-beam computed tomography (CBCT) and to identify related factors. Materials and Methods Samples with at least 1 malpositioned dental implant were collected from a central radiology clinic in Tehran, Iran from January 2017 to January 2019. Variables such as demographic characteristics, length and diameter of implants, type of implant, sites of implant insertion, different types of implant malpositioning problems (cortical plate perforation, interference with anatomical structures), angulation of the implant, and the severity of malpositioning were assessed. In addition, the incidence of implant fracture and over-drilling was evaluated. Data were statistically analyzed using the chi-square test, 1-sample t-test, and Spearman correlation coefficients. Results In total, 252 patients referred for implant postoperative CBCT evaluations were assessed. The cases of implant malpositioning included perforation of the buccal cortical plate (19.4%), perforation of the lingual cortical plate (14.3%), implant proximity to an adjacent implant (19.0%), implant proximity to an adjacent tooth (3.2%), interference with anatomical structures (maxillary sinus: 18.3%, mandibular canal: 11.1%, nasal cavity: 6.3%, mental foramen: 5.6%, and incisive canal: 0.4%). Implant fracture and over-drilling were found in 1.6% and 0.8% of cases, respectively. Severity was categorized as mild (9.5%), moderate (35.7%), severe (37.7%), and extreme (17.1%), and 52.4% of implants had inappropriate angulation. Conclusion CBCT imaging is recommended for detecting dental implant malpositioning. The most common and severe type of malpositioning was buccal cortex perforation.
Collapse
Affiliation(s)
- Yaser Safi
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Amid
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fariba Zadbin
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mitra Ghazizadeh Ahsaie
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Mortazavi
- Department of Oral Medicine, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
7
|
Long term clinical result of implant induced injury on the adjacent tooth. Sci Rep 2021; 11:7913. [PMID: 33846470 PMCID: PMC8041840 DOI: 10.1038/s41598-021-87062-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 03/23/2021] [Indexed: 11/08/2022] Open
Abstract
The purpose of the retrospective study was to investigate the long-term result of implant-induced injury on the adjacent tooth. The subjects of this retrospective study were patients who had received implants and had tooth injury; direct invasion of root (group I), root surface contact (group II), or < 1 mm distance of the implant from the root (group III). Clinical and pathological changes were periodically examined using radiographs and intra-oral examinations. Paired t-tests and chi-square tests were used to evaluate the implant stability quotient (ISQ) of implant and tooth complications, respectively (α = 0.05). A total of 32 implants and teeth in 28 patients were observed for average 122.7 (± 31.7, minimum 86) months. Seven teeth, three of which were subsequently extracted, needed root canal treatment. Finally, 90.6% of the injured teeth remained functional. Complications were significant and varied according to the group, with group I showing higher events than the others. The ISQs increased significantly. One implant in group I resulted in osseointegration failure. The implant survival rate was 96.9%. In conclusion, it was found even when a tooth is injured by an implant, immediate extraction is unnecessary, and the osseointegration of the invading implant is also predictable.
Collapse
|