scholarly journals Evaluation of number of roots and root anatomy of permanent mandibular third molars in a Korean population, using cone-beam computed tomography

2013 ◽  
Vol 07 (03) ◽  
pp. 296-301 ◽  
Author(s):  
Jun-Beom Park ◽  
NamRyang Kim ◽  
Seojin Park ◽  
Youngkyung Ko
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Anatomical Variations ◽  
Root Anatomy ◽  
Korean Population ◽  
Cone Beam ◽  
Third Molars ◽  
Significant Difference ◽  
High Prevalence ◽  
Mandibular Third Molars

ABSTRACT Objective: The purpose of this study was to investigate the morphology and number of roots of Korean mandibular third molars, and to evaluate the prevalence of C-shaped, two-rooted, and three-rooted mandibular third molars using cone-beam computed tomography (CBCT). Materials and Methods: Serial axial CBCT images of the mandibles were gathered from 137 Korean patients. The total number of roots in the mandibular third molars of these patients was measured, and both the incidence and the correlations between left- and right-side occurrences, as well as between males and females, were analyzed. Results: Most of the mandibular third molars either had two roots (56.5%) or one root (37.9%). There was no significant difference regarding the incidence of the different types of roots according to gender (female versus male) or topology (right versus left side). A higher percentage (80.5%) of the patients had similar root morphology on both sides. Conclusion: The morphology and number of 214 mandibular third molars were examined using CBCT. There was a high prevalence of two-rooted mandibular and one-rooted mandibular third molars from this Korean population. Even though the anatomical variations in the mandibular third molars may not be high, these data regarding the occurrence and morphology of the roots will provide useful information to dentists performing these procedures.

scholarly journals Retrospective study of root canal configurations of maxillary third molars in Central India population using cone beam computed tomography Part- I

2016 ◽  
Vol 10 (01) ◽  
pp. 097-102 ◽  
Author(s):  
Manjusha Rawtiya ◽  
Pavithra Somasundaram ◽  
Shefali Wadhwani ◽  
Swapna Munuga ◽  
Manish Agarwal ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Central India ◽  
Cone Beam ◽  
Type I ◽  
Third Molars ◽  
Type Iv ◽  
Maxillary Molars ◽  
High Prevalence ◽  
Cbct Analysis

ABSTRACT Objective: The aim of this study was to investigate the root and canal morphology of maxillary third molars in Central India population using cone-beam computed tomography (CBCT) analysis. Materials and Methods: CBCT images of 116 maxillary third molars were observed, and data regarding the number of roots, the number of canals, and Vertucci's Classification in each root was statistically evaluated. Results: Majority of Maxillary third molars had three roots (55.2%) and three canals (37.9%). Most MB root (43.8%), DB root (87.5%), and palatal root (100%) of maxillary third molars had Vertucci Type I. Mesiobuccal root of three-rooted maxillary third molars had Vertucci Type I (43.8%) and Type IV (40.6%) configuration. Overall prevalence of C-shaped canals in maxillary third molars was 3.4%. Conclusion: There was a high prevalence of three-rooted maxillary molars with three canals.

scholarly journals Thickness of Buccal and Lingual Alveolar Bone Plates According to the Position of Impacted Mandibular Third Molars on Cone-Beam Computed Tomography Scans

2019 ◽  
Author(s):  
Seyed Alireza Parhiz ◽  
Pegah Bakhtiary ◽  
Farzaneh Mosavat ◽  
Mohammad Javad Kharazifard
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Plate Thickness ◽  
Bone Plates ◽  
Cone Beam ◽  
Surgical Removal ◽  
Third Molars ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Objectives: This study sought to assess the thickness of buccal and lingual alveolar bone plates according to the position of impacted mandibular third molars on cone-beam computed tomography (CBCT) scans. Materials and Methods: Eighty-four CBCT scans of impacted mandibular third molars were evaluated in this retrospective study. All images had been obtained by ProMax 3D CBCT system with the exposure settings of 78 kVp, 12 mA, 16 s time, 0.2 mm voxel size and 10 × 9 cm field of view. The impaction angle of teeth and the thickness of buccal and lingual cortical plates were determined on images by drawing lines in the anterior, middle, posterior, superior, central and inferior regions. Thickness of bone plates was analyzed according to the position of impacted molars relative to the buccal and lingual plates using the Student t-test and relative to the second molars using one-way ANOVA and Tukey’s test. Results: In the buccolingual direction, the buccal plate thickness was maximum in lingual position followed by central position, and minimum in buccal position of the teeth. The lingual plate thickness was minimum in horizontal and distoangular positions and maximum in the mesioangular position of impacted teeth. Conclusion: Risk of lingual plate preformation is higher in surgical removal of impacted third molars with distoangular and horizontal positions. Thus, further attention must be paid by the surgeons to such cases.

scholarly journals Influence of acquisition parameters on the evaluation of mandibular third molars through cone beam computed tomography

2017 ◽  
Vol 124 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Larissa Pereira Lagos de Melo ◽  
Anne Caroline Costa Oenning ◽  
Mariana Rocha Nadaes ◽  
Yuri Nejaim ◽  
Frederico Sampaio Neves ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Third Molars ◽  
Mandibular Third Molars
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