Cone Beam Computed Tomographic Measurement of Maxillary Central Incisors to Determine Prevalence of Facial Alveolar Bone (original) (raw)
Related papers
2012
Background: The initial thickness of maxillary bone has significant impact on the responding level of facial bone and soft tissue after extraction and immediate implant placement. A prevailing notion is that following implant placement in fresh extraction sites, at least 2 mm of facial bone is needed to prevent soft tissue recession, fenestration, and dehiscence. Purpose: The purpose of this study was to use cone beam computed tomography (CBCT) to measure horizontal width of facial alveolar bone overlying healthy maxillary central incisors and to determine prevalence of bone thickness 32 mm. Materials and Methods: Tomographic data from 101 randomly selected patients were evaluated by two independent observers. Assessments were made of facial bone width at levels 1.0 to 10.0 mm apical to the bone crest. Results: Healthy maxillary central incisors (n = 202) were measured from 101 patient scans. The percent of teeth with facial bone 32 mm at levels 1, 2, 3, 4, and 5 mm from the bone crest was 0, 1.5, 2.0, 3.0, and 2.5%, respectively. Overall mean thickness of the bone was 1.05 mm for right and left central incisors combined. The range of individual measurements for all levels was 0 to 5.1 mm. The occurrence of 32 mm thickness bone measurements increased with increasing depth. However, mean widths observed at levels 6 to 10 mm from the crest ranged only 1.0 to 1.3 mm because of apparent fenestration occurrence (0 mm bone) in approximately 12% of teeth. Overall, no significant differences in bone thickness were found between ethnic, gender, age, or scan groups. Conclusions: Using CBCT, occurrences of 32 mm maxillary facial alveolar bone were found on no more than 3% of root surfaces 1.0 to 5.0 mm apical to the bone crest in this sample of maxillary central incisors. The study evidenced prevalence of a thin facial alveolar bone (<2 mm) that may contribute to risk of facial bone fenestration, dehiscence, and soft tissue recession after immediate implant therapy.
2020
Background: Understanding the anatomy of the facial alveolar bone (FAB), provides a prognostic tool for estimating the degree of dimensional ridge alterations after tooth extraction. This study aimed to systematically review the FAB thickness of anterior maxillary teeth measured by CBCT scans. A secondary objective was to assess the facial distance from the cementoenamel junction (CEJ) to the bone crest.Methods: An electronic search was made of Medline, Embase, Web of Science, Cochrane Library and Google Scholar up to December 2019. Studies that analyze and quantitatively compare FAB thickness at maxillary teeth by CBCT scans were included. The methodological quality of the included studies was appraised using the ROBINS-I tool from the Cochrane Collaboration. A meta-analysis of single means, subgroup analysis and meta-regression of covariates were conducted.Results: Twenty-nine studies, including 17,321 teeth, were selected. Seventeen studies considered the facial bone crest, and 1...
Journal of Personalized Medicine, 2021
The aim of this study was to use a cone-beam computed tomography (CBCT) to assess changes in alveolar bone width around dental implants at native and reconstructed bone sites before and after implant surgery. A total of 99 implant sites from 54 patients with at least two CBCT scans before and after implant surgery during 2010–2019 were assessed in this study. Demographic data, dental treatments and CBCT scans were collected. Horizontal alveolar bone widths around implants at three levels (subcrestal width 1 mm (CW1), subcrestal width 4 mm (CW4), and subcrestal width 7 mm (CW7)) were measured. A p-value of < 0.05 indicated statistically significant differences. The initial bone widths (mean ± standard deviation (SD)) at CW1, CW4, and CW7 were 6.98 ± 2.24, 9.97 ± 2.64, and 11.33 ± 3.00 mm, respectively, and the postsurgery widths were 6.83 ± 2.02, 9.58 ± 2.55, and 11.19 ± 2.90 mm, respectively. The change in bone width was 0.15 ± 1.74 mm at CW1, 0.39 ± 1.12 mm at CW4 (p = 0.0008), ...
Cureus
Background and aim Radiographic assessment is an important diagnostic tool in dental practice. Cone beam computed tomography (CBCT) is among the most important imaging examinations. By providing multiplanar visualization of the maxillofacial region, CBCT enables practitioners to assess various conditions threedimensionally. CBCT is utilized in different fields within dentistry, including oral and maxillofacial surgery, endodontics, orthodontics, periodontics, implant dentistry, and others. Having access to accurate 3D images is crucial in implant dentistry. This study aimed to measure the crestal bone height loss and facial alveolar bone thickness in the maxillary anterior teeth using CBCT to investigate its effect on surgical planning for dental implant placement in adult patients. Material and methods CBCT scans (N = 119) of adults, aged 18-65 years, with bilateral permanent maxillary anterior teeth present were included in this retrospective study. The mean alveolar bone plate thickness and crest bone height loss adjacent to the maxillary anterior teeth were measured and differences were examined. Results The results suggest that additional care and assessment of dental implant placement should be considered when replacing the permanent lateral incisors and canines. The frequency of fenestrations and dehiscence is higher in older adults. Possible management includes guided bone regeneration or "pink restorative solutions." Conclusion CBCT analysis to assess the bone morphology surrounding "hopeless" maxillary anterior teeth is important to ensure proper diagnosis and management, including the use of dental implants.
Nepal Medical College Journal
Cone beam computed tomography (CBCT) can be used for determining the height and width of alveolar bone surrounding the implant site which are important factors in implant planning. This study was done to evaluate and compare alveolar bone height and width in maxillary anterior teeth based on CBCT images from Nepalese population. This retrospective study included patients who had done CBCT scan between January 2019 to December 2020. Sagittal section views perpendicular to alveolar ridge were taken in the middle of maxillary left and right central incisor, lateral incisor, and canine regions and the linear measurements were done to measure alveolar height (between floor of nasal fossa and alveolar crest) and width (between buccal and palatal cortical plate). The result revealed no significant difference in alveolar height among maxillary anterior teeth. Mean alveolar width for maxillary right central incisor (11), lateral incisor (12), and canine (13) were 12.09 ± 2.36, 8.27 ± 1.37 an...
Clinical, Cosmetic and Investigational Dentistry
Purpose: Many important structures are associated with the maxillary alveolar bone and should be considered during orthodontic tooth movement. The purpose of this study was to investigate the correlation between the anterior maxillary alveolar bone thickness (AMABT), inclination of the central incisors, and the incisive canal (IC), as well as changes in the thickness based on age and sex of the patients. Methods: This cross-sectional study was conducted using archived cone-beam computed tomography (CBCT) records categorized according to age and sex. The parameters measured were; AMABT at three levels: alveolar crest, mid-root, and apex; incisor to palatal plane (Inc/PP) angle and IC width at palatal opening. OnDemand 3D Imaging software was utilized for image reconstruction and measurement. Data were analyzed using linear regression analysis and Mann-Whitney test. A P-value of <0.05 was considered significant. Results: Out of the 300 CBCT images assessed, only 135 images (70 males and 65 females; age range=17-63 years) fulfilled the inclusion criteria. The Inc/PP angle had a significant effect on the AMABT at the alveolar crest and mid-root levels (P<0.01). Width of the IC at palatal opening had a significant effect on AMABT at the mid-root and apex level (P<0.01). Age had a significant effect on AMABT at three levels (P<0.05). Males demonstrated significantly greater AMABT at all levels than females (P<0.01). Conclusion: There was an association between AMABT and the Inc/PP angle, width of the IC at palatal opening, age, and sex of the patients.
Evaluation of Alveolar Bone on Dental Implant Treatment using Cone Beam Computed Tomography
Pesquisa Brasileira em Odontopediatria e Clínica Integrada
Objective: To observe the outcomes of dental implant treatment based on the evaluation of bone conditions using Cone Beam Computed Tomography (CBCT). Material and Methods: A total of 31 dental implants were collected for the present study. Subsequently, mesial and distal bone losses were examined, while buccal and lingual bone thickness were measured at 7 levels. Evaluation and interpretation of CBCT results was performed by 3 independent examiners. Results: The average of mesial bone loss was 1.08 mm and 1.36 mm on distal bone. Every dental implant had lingual/palatal bone on level 1 to 3, only 1 (6.5%) didn't have bone on level 4, 3 implants (9.7%) had no bone at level 5 and 6, and 22 implants (74.2%) had no bone at level 7/implant platform. There were 8 implants (25.8%) didn't have buccal bone at level 7, only 1 implant (3.2%) didn't have buccal bone at level 2,4,5 and 6, and there were 2 implants (6.5%) had no buccal bone on level 3. Dehiscence / fenestration can be seen on 90% of the implant subjects. Conclusion: These bone loss condition could be consequence of several factors such as infection, diagnosis, treatment plan, and operator's surgery skills. The implants that placed without CBCT could lead to operator miscalculation on bone condition, therefore in moderate to advanced cases, the use of CBCT should be mandatory for treatment plan.
Implant dentistry, 2016
To retrospectively evaluate alveolar dimensions of healthy maxillary first molars (MFMs), which have implications for (immediate) implant placement and endodontic therapy. Cone-beam computed tomographic records of 95 patients (150 MFMs) were used [32 men and 63 men, aged 37.2 (14.9) years]. The vertical distance from sinus floor (SF) and MFM apexes (mesio-buccal [MB] and disto-buccal [DB]) and also distance between root apexes (spreading of the roots, MB to palatal and DB to palatal, representing bone width) were measured. The mean (SD) thickness of buccal and palatal bony walls (2 mm from crest) was 1.58 (0.6) mm and 1.34 (0.54) mm, respectively. The mesio-distal and bucco-lingual socket sizes at crest were 7.3 (0.84) mm and 10.5 (0.90) mm, respectively. The mean distance from SF to MFM furcation was 6.51 (2.94) mm. The mean distance (95% confidence interval) between SF and MB, DB, and palatal apexes was -0.36 mm (-0.91 to 0.19), 0.32 mm (-0.27 to 0.9), and -2.2 mm (-2.7 to -1.7), ...
Dental Press Journal of Orthodontics, 2013
OBJECTIVE: To compare, through computed tomography, alveolar bone thickness changes at the maxillary incisors area during orthodontic treatment with and without tooth extraction. METHODS: Twelve patients were evaluated. They were divided into 2 groups: G1 - 6 patients treated with extraction of right and left maxillary first premolars, with mean initial age of 15.83 years and mean treatment length of 2.53 years; G2 - 6 patients treated without extraction, with mean initial age of 18.26 years and mean treatment length of 2.39 years. Computed tomographies, lateral cephalograms and periapical radiographs were used at the beginning of the treatment (T1) and 18 months after the treatment had started (T2). Extraction space closure occurred in the extraction cases. Intragroup and intergroup comparisons were performed by dependent and independent t test, respectively. RESULTS: In G1, the central incisor was retracted and uprighted, while in G2 this tooth showed vestibularization. Additional...
Alveolar bones density assessment of dental implant sites using cone-beam computed tomography
Padjadjaran Journal of Dentistry
ABSTRACTIntroduction: a preoperative assessment of bone density plays a vital role in the success of dental implant treatment. the maxilla and mandibular alveolar bone had a variety of bone densities. Therefore, dental imaging is an important step before placing a dental implant. Recently, Cone beam computed tomography (CBCT) is widely used in dental medicine and also recommended by AAOMR for preoperative implant placement. The aims of this study is to analyzed the alveolar bone density of the dental implant sites for dental implant planning using CBCT. Methods: ninety-three CBCT data were retrieved from the database of the department of oral and maxillofacial radiology at Dental Hospital Faculty of Dentistry Universitas Trisakti and examined. The recipient sites for dental implant placement were determined based on CBCT data using implant planning software (i-Dixel). The alveolar bones value is recorded in grayscale value (GV). Results: a great variety of alveolar bone density was ...