A three-dimensional finite element model of Physiologic Anchorage Spee’s-wire System combined with opening bite by intrusion arch and analysis of relevant data

doi:10.3969/j.issn.2095-4344.2017.30.011

Abstract

Abstract:

BACKGROUND: Physiologic Anchorage Spee’s-wire System (PASS) is a new appliance for orthodontic treatment in recent years. It has its superiority in support control, torque domination and friction control, and it is also unique in opening bite.

OBJECTIVE: To build a three-dimensional finite element model of PASS with intrusion arch, and to analyze its effects on intrusion of the anterior teeth and on enhancing anchorage of the molars.

METHODS: The CT scan data were imported into software of Mimicsl7.0 to obtain a three-dimensional model of the teeth and jaw bone. A series of modeling software such as Geomagic Studio, NX, ANSYSl5.0 were used to obtain the three-dimensional model of the maxillary dentition with PASS and intrusion arch. The overall force of the dentition and movement of the anterior teeth were analyzed when the intrusion arch was located at the mesial side of the central incisor and lateral incisor as well as the distal side of the lateral incisor.

RESULTS AND CONCLUSION: It was efficient to accomplish the intrusion of the anterior teeth when the arch was located between central incisors. Labial inclination of the anterior teeth was achieved when the arch was ligated at the mesial side of the lateral incisor. Lingual inclination and intrusion of the anterior teeth was found when the arch was located at the distal side of the lateral incisor. Under these three kinds of conditions, the trend of molar retrodisplacement became remarkable. The maximum movement trend of the incisors was achieved, when the arch was ligated at the mesial side of the central incisor, mainly due to the intrusion of the incisors. The molar retrodisplacement was improved under the three conditions. This experiment simulated the stress distribution and displacement trend of the teeth, which is beneficial to the clinical understanding and application of the PASS technology with intrusion arch.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Tooth, Orthodontics, Finite Element Analysis, Biomechanics, Tissue Engineering

CLC Number:

R318

Liu Guang-mei, Liu Hai-xia, Wu Xiao-ya, Wang Wei.

A three-dimensional finite element model of Physiologic Anchorage Spee’s-wire System combined with opening bite by intrusion arch and analysis of relevant data

[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(30): 4817-4822.

Figures/Tables 9

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