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Surgical and Radiologic Anatomy

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01-04-2016 | Original Article

Relationship between CBCT and panoramic images of the morphology and angulation of the posterior mandibular jaw bone

Authors: Mehmet Ertuğrul Çiftçi, Ali Murat Aktan, Özlem İşman, Eren Yıldırım

Published in: Surgical and Radiologic Anatomy | Issue 3/2016

Abstract

Purpose

We determined actual bucco-lingual angulation values and morphological variations of residual bone in the mandibular posterior edentulous region using cone-beam computed tomography (CBCT) and panoramic radiography. A second aim was to investigate whether it was possible to predict bone morphology from panoramic radiographs.

Methods

Data were collected from 77 consecutive patients referred for both CBCT and panoramic radiography in our department. Two-dimensional and three-dimensional images of the probable implant placement region were investigated. The bucco-lingual angulation values and crest type were determined directly from the cross-sectional images of the posterior edentulous region. The edentulous region was divided into three groups: second premolar, first molar, or second molar region. The observations were evaluated by the computer software, SPSS 22.0 (SPSS Inc. Chicago, USA). The crest type was classified into three groups: type U, type C, or type P. Kappa statistics, Kolmogorov–Smirnov tests, ANOVA, and Kruskal–Wallis tests were used in statistical analyses. The significance level was set at p < 0.05.

Results

Type C was more frequent in the second premolar region and the crest type had changed to type U in the second molar region. The predictability of the type U was highest in the second molar region. Moderate agreement was found in the predictability of type U in the molars (κ = 0.602). The mean value of bucco-lingual angulation was highest in the second molar region, followed by the first molar region. There were statistically significant differences between the bucco-lingual angulation of the crest types in the second premolar and first molar regions (p < 0.05).

Conclusions

Bucco-lingual angulation values and morphology change through the posterior mandible. Type U was predicted at a higher rate in the second molar region from panoramic radiographs. These results demonstrate predicting high-risk areas in the posterior mandible for implant therapy from panoramic radiography.

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Title: Relationship between CBCT and panoramic images of the morphology and angulation of the posterior mandibular jaw bone
Authors: Mehmet Ertuğrul Çiftçi
Ali Murat Aktan
Özlem İşman
Eren Yıldırım
Publication date: 01-04-2016
Publisher: Springer Paris
Published in: Surgical and Radiologic Anatomy / Issue 3/2016
Print ISSN: 0930-1038
Electronic ISSN: 1279-8517
DOI: https://doi.org/10.1007/s00276-015-1553-1

At a glance: The STEP trials

Springer Medicine

Relationship between CBCT and panoramic images of the morphology and angulation of the posterior mandibular jaw bone

Abstract

Purpose

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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