A finite element study of the influence of upper lip pressure on the development of maxilla after cleft lip surgery

doi:10.19439/j.sjos.2021.03.004

Abstract

Abstract: PURPOSE: To explore the mechanism of upper lip pressure on maxilla after cleft lip surgery. METHODS: ANSYS 17.0 software was used to add the upper lip soft tissue to the finite element model of maxilla with cleft palate, and the material properties was assigned to form a three-dimensional finite element model of maxilla with upper lip. The upper lip pressure was applied to the model and force analysis was performed in 2 groups. In the experimental group, upper lip pressure with cleft lip surgery was applied; in the control group, upper lip pressure in normal children of the same age was applied. RESULTS: Maxillary deformation in the experimental group was greater than that in the control group. Maxillary deformation occurred in three-dimensional direction, which was mainly in Z axis, followed by X axis and Y axis. The anterior segment of alveolar process was the most obvious,and from the anterior to the posterior, the change trend was gradually decreased. CONCLUSIONS: Maxillary growth is inhibited in three-dimensional direction,which is mainly sagittal growth inhibition,followed by transverse and vertical growth. The inhibition gradually decreases from anterior to posterior.

Key words: Upper lip pressure, Maxillary growth, Three-dimensional finite element, Cleft lip and palate

CLC Number:

R782.2

HUANG Wei, GUO Kai-li, ZHANG Xiao-yan, FENG Ying, FENG Xiao-wei, LI Xiang-jun. A finite element study of the influence of upper lip pressure on the development of maxilla after cleft lip surgery[J]. Shanghai Journal of Stomatology, 2021, 30(3): 243-246.

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