scholarly journals Versatility of the cone beam computed tomography in oral surgery: an overview

2011 ◽  
Vol 1 (2) ◽  
pp. 31
Author(s):  
Kishan G. Panicker ◽  
Anuroopa Pudukulangara Nair ◽  
Bipin Chandra Reddy
Keyword(s):  
Computed Tomography ◽  
Alveolar Bone ◽  
Oral Surgery ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Facial Skeleton ◽  
Posterior Teeth ◽  
True Nature ◽  
Root Apices ◽  
Relationship Of

Cone beam CT (CBCT) produces threedimensional information on the facial skeleton, teeth and their surrounding tissues; and is increasingly being used in many of the dental specialties. This is usually achieved with a substantially lower effective dose compared with conventional medical computed tomography (CT). Periapical pathologies, root fractures, root canal anatomy and the true nature of the alveolar bone topography around teeth may be assessed. CBCT scans are desirable to assess posterior teeth prior to periapical surgery, as the thickness of the cortical and cancellous bone can be accurately determined as can the inclination of roots in relation to the surrounding jaw. The relationship of anatomical structures such as the maxillary sinus and inferior dental nerve to the root apices may also be clearly visualized. Measurements on CBCT are more accurate when compared with OPG. Therefore, CBCT permits the clinician to have all necessary information when planning dental implants. The purpose of this article is to provide an overview of the unique image display capabilities of maxillofacial CBCT systems and to illustrate specific applications in clinical practice.

scholarly journals Alveolar Bone Dimensions of Mandibular Posterior Teeth using Cone Beam Computed Tomography: A Pilot Study

2016 ◽  
Vol 6 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Varun Rajeev Kunte ◽  
Ajay Ramesh Bhoosreddy ◽  
Seema Ajay Bhoosreddy ◽  
Atul Ashok Pandharbale ◽  
Manila Rajaram Shinde ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Cone Beam ◽  
Bone Augmentation ◽  
Posterior Teeth ◽  
Bone Width ◽  
Mandibular Posterior Teeth ◽  
Molar Region ◽  
Bone Dimensions

ABSTRACT Aim The aim of this study was to analyze bone dimensions of the dentate posterior mandible using cone beam computed tomography (CBCT). Objectives The objectives of this study were • To measure thickness of buccal and lingual bone walls in mandibular posterior teeth using CBCT. • To measure alveolar bone width in mandibular posterior teeth using CBCT. Materials and Methods Ten CBCT scans were included in the study (n = 65 teeth). Thicknesses of buccal and lingual walls were measured at measurement point 1 (MP1) and measurement point 2 (MP2). Alveolar width was assessed at most coronal detected alveolar bone (BW1) and at superior border of mandibular canal (BW2). Vertical distance between BW1 and BW2 was measured (H). Data were tabulated and results were statistically analyzed using unpaired t test. Results The study showed that there was an increase in bone wall thickness from 1st premolar to 2nd molar for buccal and lingual alveolar plates. Lingual bone walls were thicker than buccal bone walls at MP1 and MP2 for all teeth. Bone width for premolars was considerably less than bone width of molars. Conclusion Careful preoperative analysis using CBCT is important to assess need of bone augmentation procedures. As the bone thickness and width in the molar region is more adequate, prognosis of implants placed in molar region may be better. Clinical significance Analysis of bone dimensions is of utmost importance for successful outcome of bone augmentation procedures in implant treatment. How to cite this article Kunte VR, Bhoosreddy AR, Bhoosreddy SA, Pandharbale AA, Shinde MR, Ahire BS. Alveolar Bone Dimensions of Mandibular Posterior Teeth using Cone Beam Computed Tomography: A Pilot Study. J Contemp Dent 2016;6(1):9-14.

Facial Alveolar Bone Width at the First and Second Maxillary Premolars in Healthy Patients: A Cone Beam Computed Tomography Study

2017 ◽  
Vol 43 (4) ◽  
pp. 261-265 ◽  
Author(s):  
Julio Rojo-Sanchis ◽  
Jose Viña-Almunia ◽  
David Peñarrocha-Oltra ◽  
Miguel Peñarrocha-Diago
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Oral Surgery ◽  
Descriptive Analysis ◽  
Cone Beam ◽  
Average Width ◽  
Bone Width ◽  
Immediate Implants ◽  
Maxillary Premolars

The purpose of this study was to analyze the thickness of the facial alveolar bone at the first and second maxillary premolars and determinate the percentage of premolars that reached 2 mm in width. A retrospective study was performed, analyzing cone beam computed tomography scans from the database of the Oral Surgery Unit of the University of Valencia. Patients with periodontal disease, orthodontic treatment, absence among the first maxillary molars, premolars with endodontic treatment, or prosthetic restorations were excluded. The facial alveolar bone width was measured at 1, 2, 3, and 5 mm apical to the vestibular bone peak. A total of 44 patients were included in the study, with 72 first premolars and 72 second premolars analyzed. A descriptive analysis was performed and the normal means were assessed using the Kolmogorov-Smirnov test. The average width of the facial alveolar bone at first and second maxillary premolars was respectively: 1.41 ± 0.50 and 1.72 ± 0.56 at 1 mm, 1.68 ± 0.72 and 2.23 ± 0.66 at 2 mm, 1.71 ± 0.89 and 2.43 ± 0.82 at 3 mm, 1.44 ± 1.00 and 2.31 ± 1.06 at 5 mm from the vestibular bone peak. The facial alveolar bone width at the second maxillary premolars was greater than at the first maxillary premolars at all points measured. This information should be taken in account when planning immediate implants. Further studies are needed to analyze bone resorption at maxillary premolars to better understand facial alveolar bone width influence in implant treatment.

scholarly journals Relationship between mandibular symphysis dimensions and mandibular anterior alveolar bone thickness as assessed with cone-beam computed tomography

2018 ◽  
Vol 23 (1) ◽  
pp. 54-62 ◽  
Author(s):  
Pimchanok Foosiri ◽  
Korapin Mahatumarat ◽  
Soontra Panmekiate
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Correlation Coefficients ◽  
Cone Beam ◽  
Bone Thickness ◽  
Significance Level ◽  
Computed Tomography Images ◽  
Anterior Teeth ◽  
Root Apices

ABSTRACT Objective: To determine the relationship between symphysis dimensions and alveolar bone thickness (ABT) of the mandibular anterior teeth. Methods: Cone-beam computed tomography images of 51 patients were collected and measured. The buccal and lingual ABT of the mandibular anterior teeth was measured at 3 and 6 mm apical to the cemento-enamel junction (CEJ) and at the root apices. The symphysis height and width were measured. The symphysis ratio was the ratio of symphysis height to symphysis width. Kendall’s tau correlation coefficient was used to determine the relationships between the variables at a 0.05 significance level. Results: The mandibular anterior teeth lingual and apical ABT positively correlated with symphysis width (p<0.05). Moreover, these thicknesses negatively correlated with the symphysis ratio (p<0.05). Symphysis widths and ratios showed higher correlation coefficients with total and buccal apical ABT, compared with lingual ABT. Buccal ABT at 3 and 6 mm apical to the CEJ was not significantly correlated with most symphysis dimensions. The mean thickness of the buccal alveolar bone at the upper root half was only 0.2-0.6 mm, which was very thin, when compared with other regions. Conclusion: For mandibular anterior teeth, the apical alveolar bone and lingual alveolar bone tended to be thicker in patients with a wide and short symphysis, compared to those with a narrow and long symphysis. Buccal alveolar bone was, in general, very thin and did not show a significant relationship with most symphysis dimensions.

scholarly journals Study of Anatomical Relationship between Posterior Teeth and Maxillary Sinus Floor in a Subpopulation of the Brazilian Central Region Using Cone-Beam Computed Tomography - Part 2

2016 ◽  
Vol 27 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Carlos Estrela ◽  
Carla A. B. C. M. Nunes ◽  
Orlando Aguirre Guedes ◽  
Ana Helena G. Alencar ◽  
Cynthia R. A. Estrela ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Maxillary Sinus ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Posterior Teeth ◽  
Second Molar ◽  
Anatomical Relationship ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Root Apices

Abstract This study evaluated the anatomical relationship between posterior teeth root apices and maxillary sinus floor (MSF) on 202 cone beam computed tomography (CBCT) exams. The distance between the root apices and the MSF, as well as the MSF thickness of the cortical bone closest to root apices and furcation regions were measured. The vertical and horizontal relationships of the MSF with the molar roots were classified into categories adapted from the criteria proposed by Kwak et al. (14). The shortest distances between MSF and the root apices were observed in the mesiobuccal root of the second molar (0.36±1.17 mm) and the palatal root of the first molar (0.45±1.10 mm) and the widest in buccal roots of the first premolars (5.47±4.43 mm). Significant differences were observed between the distance of MSF to the root apices of single-rooted first and second premolars. The cortical thickness ranged from 0.65±0.41 mm over the mesiobuccal root of the second molar to 1.28±0.42 mm over the buccal root of the first premolar. The most observed vertical and horizontal relationships were type II and 2H, respectively. The maxillary molar roots showed greater proximity to the MSF. The thickness of the MSF cortical bone closest to the apices and furcation regions was found to be similar only for premolars.

scholarly journals Anatomical analysis of periapical bone of maxillary posterior teeth: a cone beam computed tomography study

2019 ◽  
Vol 47 (10) ◽  
pp. 4701-4710
Author(s):  
Xiaoli Hu ◽  
Lizhen Lei ◽  
Minyi Cui ◽  
Zhuwei Huang ◽  
Xiaolei Zhang
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Posterior Teeth ◽  
Endodontic Microsurgery ◽  
Sinus Cavity ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Root Apices ◽  
Age And Sex

Objectives To investigate the periapical bone thicknesses of maxillary posterior teeth at the preferred level for root resection (3 mm apical to the root end) and to determine vertical distances from apex to maxillary sinus floor (MSF) using cone beam computed tomography (CBCT) scans. Methods CBCT scans were collected from 341 subjects (2389 teeth). Associations of bone thicknesses and vertical distances with age and sex were determined by one-way analysis of variance. Results At the level of root-end resection, buccal bone was the thickest over the mesiobuccal roots of second molars (mean, 2.99 mm) and thinnest over the double-root first premolars (mean, 0.29 mm). In maxillary posterior teeth, thicker buccal bone was found in men than in women. The mesiobuccal roots of second molars were nearest to the MSF (mean, 1.33 mm), and were also most frequently extended into the sinus cavity (15.81%). Subjects more than 40 years of age had larger vertical distances from root apices to MSF in the molar region, compared with younger subjects. Conclusions Generally, periapical bone was thicker in men, and root apices were located nearer to the MSF in younger subjects. Age and sex should be considered before endodontic microsurgery.

scholarly journals Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: a proof of concept study

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Kyungmin Lee ◽  
Gyu-Hyoung Lee
Keyword(s):  
Computed Tomography ◽  
Radiation Exposure ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Treatment Evaluation ◽  
Cone Beam ◽  
Proof Of Concept ◽  
Cbct Image ◽  
Root Position

Abstract Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root. Materials and methods Intraoral scan and CBCT scan of the patient were obtained before treatment. In the CBCT image, tooth segmentation was performed by isolating individual teeth from the maxillary and mandibular alveolar bone using software program. The 3D tooth model was fabricated by combining segmented individual teeth with the intraoral scan. Results A post-treatment intraoral scan was integrated into the tooth model, and the resulting position of the root could be predicted without additional radiographs. It is possible to monitor the root position after a pretreatment CBCT scan using a 3D tooth model without additional radiographs. Conclusion The application of the 3D tooth model benefits the patient by reducing repeated radiation exposure while providing the clinician with a precise treatment evaluation to monitor tooth movement.

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