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[Finite element analysis of periodontal tissue stress distribution of labial inverted impacted maxillary central incisor].

AbstractOBJECTIVE:
This study aims to do the following: construct a three-dimensional finite element model of an labial inverted impacted maxillary central incisor and its supporting tissues, analyze stress distribution in the periodontal tissue when various tractions are exerted, and provide references for treating impacted maxillary central incisor.
METHODS:
A three-dimensional finite element model oflabial inverted impacted maxillary central incisor and its periodontal tissues was established using Mimics 10.01 and Ansys 14.0 software based on original cone beam computed tomography (CBCT) data. Various traction values (20, 30, 40, 50, 60, and 70 g) were exerted on the incisal margin in the direction perpendicular to the impacted tooth. Different Von Mises stress values were determined.
RESULTS:
Stress distribution on the periodontal ligament increased with traction size. When 30 g traction was exerted on the labial inverted impacted maxillary central incisor, the Von Mises stress was 24 919.0 Pa, which was within the range of the optimum force and close to its maximum value.
CONCLUSION:
The optimum traction for early orthodontic treatment of labial inverted impacted maxillary central incisor is nearly 30 g.
AuthorsHui Jifang, Zhang Han, Qu Xiaodong, Yan Weijun, Shao Ping
JournalHua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology (Hua Xi Kou Qiang Yi Xue Za Zhi) Vol. 33 Issue 1 Pg. 67-70 (Feb 2015) ISSN: 1000-1182 [Print] China
PMID25872302 (Publication Type: Journal Article)
Topics
  • Finite Element Analysis
  • Incisor
  • Lip
  • Maxilla
  • Periodontal Ligament
  • Tooth, Impacted

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