Selection of way of internal fixation and biomechanical analysis for edentulous mandibular fractures with different atrophy degrees in elderly population

doi:10.19438/j.cjoms.2018.04.007

Abstract

Abstract: PURPOSE:To compare the result of different treatment methods (way of internal fixation) for edentulous mandibular fractures with 3 different atrophy degrees. METHODS: We established a biomechanical model of atrophic edentulous mandibular fracture and analyzed the displacement of the fracture and the stress on titanium plate with different treatment via finite element analysis. RESULTS: For atrophic mandibular fracture of class III, the displacement of using 1 miniplate in superior border of mandible was larger than other 6 conditions; For the same degree of atrophic mandibular fracture, the displacement of using reconstruction plate was smaller than other kinds of internal fixation; For atrophic mandibular fracture of class III, the stress on the titanium plate was near or above the yield limit for using 1 miniplate. CONCLUSIONS: For atrophic mandibular fracture of class I, both 2 miniplates and 1 reconstruction plate can achieve satisfactory results. For atrophic mandibular fracture of class II and III, 1 reconstruction plate can achieve more satisfactory results.

Key words: Elderly population, Mandibular facture, Biomechanical analysis, Finite element analysis

CLC Number:

R782.4

LI Ming-zhe, XU Xiao-feng, XU Bing. Selection of way of internal fixation and biomechanical analysis for edentulous mandibular fractures with different atrophy degrees in elderly population[J]. China Journal of Oral and Maxillofacial Surgery, 2018, 16(4): 328-333.

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