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The Effect of Weak Areas of Mandible in SSRO Evaluated by Multislice Spiral CT and Three-dimensional Reconstruction

Author: WuQiaoYing
Tutor: LiuJianHua
School: Zhejiang University
Course: Clinical Stomatology
Keywords: Multislice CT Mandible SSRO Three-dimensional measurement Ramus leading edge angle
CLC: R782
Type: Master's thesis
Year: 2010
Downloads: 63
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Abstract

Objective: multislice CT and three-dimensional reconstruction assess weak areas ramus (ramus leading edge of the mandibular foramen position on the outer wall to the lateral wall of the ascending branch of the mandibular canal), in order to avoid SSRO intraoperative fractures and lower teeth slot nerve injury, improve SSRO success rate. Methods: line CT room of the First Affiliated Hospital of Zhejiang University September 2007 August -2009 mandible multislice CT scan parallel three-dimensional reconstruction of the image data file 268 cases, male 157 cases, female 111 cases, aged 10 -69 between the ages of 15-19 17 males and 11 females; 20-29 years old 20 males, 20 females; 30-39 28 males and 14 females; 40-49 24 males, 20 females; 50-59 26 males and 10 females; 60-69 42 males and 36 females. Mandible continuous multislice CT scan, based on a set of multi-slice spiral CT scan parallel measurements of three-dimensional reconstruction of mandibular leading edge angle (to assess the mandibular branch leading edge thickness indicators) and position of mandibular foramen mandibular nerve tube sidewall to the mandibular two measurements of the thickness of the lateral wall of the branch, on the the ramus weak area of ??measurement and statistical analysis. Results: (1) the mandibular mandibular canal outside wall to support the leading edge of the angle and the position of mandibular foramen mandibular mandibular both sides of the thickness of the lateral wall of the branch had no statistical difference (P gt; 0.05); (2 ) men mandibular ascending branch of the leading edge angle large than women (P lt; 0.05); (3) for the position of the mandibular foramen mandibular canal mandibular lateral wall to the thickness of the lateral wall of the branch, the men and women was not statistically difference (P gt; 0.05); (4) two indicators of all ages there is a significant difference (P lt; 0.05). Conclusion: spiral CT scanning and three-dimensional reconstruction is currently considered the most suitable for hard tissue scan. Reconstructed images anyway rotation, scaling, cutting, value is always constant, but do not need to determine the positioning plane will not cause large errors in measured data. Spiral CT measurement has high accuracy, and can replace entity anatomical measurements to solve the problems of the entities anatomical measurements can not be applied directly in vivo. Position of the leading edge angle, and mandibular foramen parallel three-dimensional reconstruction of the data based on multilayer spiral CT scan, the measurement of different genders, ages ramus mandibular neural tube outer wall to the the mandibular branch outside wall thickness average of . The first two sets of measurement data exploratory reported expectations of secondary significance of clinical surgery, and enrich our database of digitized human knowledge.

The Effect of Weak Areas of Mandible in SSRO Evaluated by Multislice Spiral CT and Three-dimensional Reconstruction

Abstract

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