Tomographic mapping of buccal shelf area for optimum placement of bone screws: A three-dimensional cone-beam computed tomography evaluation

Kolge, Neeraj E; Patni, Vivek; Potnis, Sheetal

doi:10.25259/apos_20_2019

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…Nucera et al 13 found values of 7.88 ± 1.71 mm on the right side and 7.71 ± 1.69 mm on the left side. Kolge et al 19 determined a thickness of 6.40 ± 1.35 mm at 8 mm from CEJ at the distobuccal cusp of the mandibular second molar, while Elshebiny et al 12 documented a value of 8.13 ± 1.97 mm at the same location. The present study also found greater bone thickness at the distal surface of the mandibular second molar, with an average value of 7.6 ± 1.6 mm at 11 mm from CEJ.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular buccal shelf characteristics in the Colombian population: A cone-beam computed tomography study

et al. 2021

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Objective To evaluate the mandibular buccal shelf (MBS) in terms of the angulation and bone depth and thickness according to sex, age, and sagittal and vertical skeletal patterns in a Colombian population using cone-beam computed tomography (CBCT). Accordingly, the optimal site for miniscrew insertion in this area was determined. Methods This descriptive, retrospective study included 64 hemi-arches of 34 patients. On CBCT images, the angulation, buccal bone depth (4 and 6 mm from the cementoenamel junction [CEJ] of MBS), and buccal bone thickness (6 and 11 mm from the CEJ of MBS) were measured at the mesial and distal roots of the mandibular first and second molars. Results There were no statistically significant differences in the angulation, depth, and thickness of MBS between male and female patients. The values for the bone around the distal root of the mandibular second molar were significantly greater than the other values. The osseous characteristics were significantly better in participants aged 16–24 years. Class III patients exhibited the best osseous characteristics, with the bone depth at 6 mm being significantly different from that in Class I and Class II patients. Although values tended to be greater in patients with low angles, the difference was not statistically significant. Conclusions MBS provides an optimal bone surface for miniscrew insertion, with better osseous characteristics at the distal root of the mandibular second molar, 4 mm from CEJ. Adolescent patients, Class III patients, and patients with a low angle exhibit the most favorable osseous characteristics in the MBS area.

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Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular buccal shelf characteristics in the Colombian population: A cone-beam computed tomography study

et al. 2021

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“…Correia et al (14) found 7.6±1.6mm at 11mm CEJ, Nucera et al (7) reported 7.88±1.71mm on the right side and 7.71±1.69mm on the left side. While other authors found slightly lower values, but they measured 8mm from the CEJ (9,25).…”

Section: Discussionmentioning

confidence: 78%

Tomographic Evaluation of Mandibular Buccal Shelf in Patients with Different Vertical Growth Pattern

García-Gonzales

Chacón

2022

Odovtos - Int J Dent Sc

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The purpose of this research was the tomographic evaluation of the Mandibular Buccal Shelf (MBS) in orthodontic patients with different vertical growth pattern. An observational, descriptive, cross-sectional and retrospective study was conducted. Tomographic images of patients aged 14 to 40 years were observed and a database was formed with those that met the inclusion criteria. The sample size was 10 for each group according to vertical growth pattern (hypodivergent, normodivergent and hyperdivergent). Then four zones of frequent insertion of extralveolar mini-screws were selected in the MBS, taking as a reference the mesial and distal roots of the first and second mandibular molar. When comparing the characteristics of MBS between vertical growth patterns, between sexes and hemiarchs, no statistically significant differences were found. However, when the characteristics of MBS were compared according to the reference root, it was found that there were statistically significant differences. The vestibular area to the distal root of the second mandibular molar presented the highest values in terms of angulation, height and thickness. There are no significant differences in the bone characteristics of MBS according to vertical growth patterns, sexes or hemiarchs. Angulation, height and thickness progressively increase from the vestibular bone of the mesial root of the first mandibular molar to the distal root of the second molar.

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“…Elshebiny et al studied the anatomy of the MBS by superimposing the STL models of the subjects on their CBCTs and virtually placing miniscrews after digitally tracing the inferior alveolar canal and also reported the greatest buccal and cortical bone depth distal to the 2nd molar at 8 mm from the CEJ [ 24 ]. Another study by Kolge et al studied the MBS at three different locations and two heights from CEJ and concluded that the DB2M region at 8 mm depth from the CEJ had the highest TBT (6.4mm) with the advocation of pre-drilling in cases of thick cortical bone which will result in the delayed failure of the miniscrew [ 25 ]. Trivedi et al also reported greater CBT of 7 mm vertically from the alveolar crest at DB2M region and emphasizes caution while placing MS at this anatomic site due to its close proximity to the inferior alveolar nerve [ 20 ].…”

Section: Discussionmentioning

confidence: 99%

Computed Tomographic Evaluation of Buccal Shelf Dimensions in South Indian Patients With Sagittal Skeletal Class III Malocclusion: A Retrospective Study

Nookala,

Sreenivasagan,

Sivakumar

et al. 2023

Cureus

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Background Computed tomographic evaluation of mandibular buccal shelf region in skeletal class III malocclusion cone beam computed tomography (CBCT) studies have been reported to have great alteration in the thickness of mandibular buccal shelf region owing to the different growth patterns and ethnic variations. The aim of this study was to determine the total and cortical bone thickness in the mandibular buccal shelf (MBS) region for extra-alveolar mini-screw placement in South Indian patients with sagittal skeletal class III malocclusion. Material and methods This retrospective computed tomographic study consisted of archived files of the Dravidian population with class III skeletal base that met the eligibility criteria. The total bone and cortical bone thickness of the buccal shelf regions were evaluated in relation to three anatomical sites at various depths and angulations. One-way ANOVA and Tukey honestly significant difference (HSD) post hoc tests were used for statistical analysis. Pearson correlation coefficient was performed to compare if any relation existed between bone thickness and the growth pattern. Results The maximum bone thickness in the buccal shelf region in our study was found at the distal portion of the second molar root, 8-12 mm from its cementoenamel junction (CEJ) and at 30-45 ° angulation (p-value<0.005). There was a positive correlation between the hypo-divergent growth pattern and the thickness of the bone. Conclusion Based on the sites recorded, the preferred site for mini screw placement in Class III patients is the distobuccal cusp region with respect to the second molar at a depth of 8-12 mm and at angulation of 30-45 °. There was a moderate correlation with hypo-divergent growth patterns, suggestive of a wider and thicker mandibular buccal shelf region in these subjects.

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Tomographic mapping of buccal shelf area for optimum placement of bone screws: A three-dimensional cone-beam computed tomography evaluation

Cited by 7 publications

References 6 publications

Evaluation of mandibular buccal shelf characteristics in the Colombian population: A cone-beam computed tomography study

Evaluation of mandibular buccal shelf characteristics in the Colombian population: A cone-beam computed tomography study

Tomographic Evaluation of Mandibular Buccal Shelf in Patients with Different Vertical Growth Pattern

Computed Tomographic Evaluation of Buccal Shelf Dimensions in South Indian Patients With Sagittal Skeletal Class III Malocclusion: A Retrospective Study

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