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[Three-dimensional finite element analysis of craniofacial skeleton protraction at medium position].
Zhonghua Zheng Xing Wai Ke Za Zhi. 2007 Jul; 23(4):281-3.ZZ

Abstract

OBJECTIVE

The purpose of this study was to investigate the biomechanical changes of midface skeleton protraction at its medium position in the craniofacial complex, using the three-dimensional finite element method (FEM).

METHODS

A three-dimensional FEM model was developed from the CT scan images by the technologies of three-dimensional reconstruction, image processing and meshing. The protraction forces were applied to the following locations: the first molar, full maxillary arch, and the floor of aperture piriforms. Biomechanical changes from different position protraction were investigated by means of finite element analyses.

RESULTS

Protraction forces at the level of the floor of aperture piriforms produced a more forward movement of the upper maxilla in sagittal direction. Vertical and lateral displacements were less than those in loading with teeth or denture. Compressive stress on the radix nasi decreased obviously in midface skeleton protraction at its medium position.

CONCLUSIONS

Compared with traditional orthopedic protraction, midface skeleton protraction at its medium position could advance maxilla en bloc, decrease the counterclockwise rotation of the maxilla, and reduce the constriction of the anterior part of the palate.

Authors+Show Affiliations

Hou M
Department of Orthognathic Surgery, Tianjin Stomatological Hospital, Tianjin 300041, China.
Liu CM
No affiliation info available
Zhang HZ
No affiliation info available
Liang LM
No affiliation info available
Gao QW
No affiliation info available

MeSH

Finite Element AnalysisHumansImaging, Three-DimensionalMaxillaSkullStress, Mechanical

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

17926844

Citation

Hou, Min, et al. "[Three-dimensional Finite Element Analysis of Craniofacial Skeleton Protraction at Medium Position]." Zhonghua Zheng Xing Wai Ke Za Zhi = Zhonghua Zhengxing Waike Zazhi = Chinese Journal of Plastic Surgery, vol. 23, no. 4, 2007, pp. 281-3.
Hou M, Liu CM, Zhang HZ, et al. [Three-dimensional finite element analysis of craniofacial skeleton protraction at medium position]. Zhonghua Zheng Xing Wai Ke Za Zhi. 2007;23(4):281-3.
Hou, M., Liu, C. M., Zhang, H. Z., Liang, L. M., & Gao, Q. W. (2007). [Three-dimensional finite element analysis of craniofacial skeleton protraction at medium position]. Zhonghua Zheng Xing Wai Ke Za Zhi = Zhonghua Zhengxing Waike Zazhi = Chinese Journal of Plastic Surgery, 23(4), 281-3.
Hou M, et al. [Three-dimensional Finite Element Analysis of Craniofacial Skeleton Protraction at Medium Position]. Zhonghua Zheng Xing Wai Ke Za Zhi. 2007;23(4):281-3. PubMed PMID: 17926844.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Three-dimensional finite element analysis of craniofacial skeleton protraction at medium position]. AU - Hou,Min, AU - Liu,Chun-ming, AU - Zhang,Hai-zhong, AU - Liang,Li-min, AU - Gao,Quan-wen, PY - 2007/10/12/pubmed PY - 2010/3/10/medline PY - 2007/10/12/entrez SP - 281 EP - 3 JF - Zhonghua zheng xing wai ke za zhi = Zhonghua zhengxing waike zazhi = Chinese journal of plastic surgery JO - Zhonghua Zheng Xing Wai Ke Za Zhi VL - 23 IS - 4 N2 - OBJECTIVE: The purpose of this study was to investigate the biomechanical changes of midface skeleton protraction at its medium position in the craniofacial complex, using the three-dimensional finite element method (FEM). METHODS: A three-dimensional FEM model was developed from the CT scan images by the technologies of three-dimensional reconstruction, image processing and meshing. The protraction forces were applied to the following locations: the first molar, full maxillary arch, and the floor of aperture piriforms. Biomechanical changes from different position protraction were investigated by means of finite element analyses. RESULTS: Protraction forces at the level of the floor of aperture piriforms produced a more forward movement of the upper maxilla in sagittal direction. Vertical and lateral displacements were less than those in loading with teeth or denture. Compressive stress on the radix nasi decreased obviously in midface skeleton protraction at its medium position. CONCLUSIONS: Compared with traditional orthopedic protraction, midface skeleton protraction at its medium position could advance maxilla en bloc, decrease the counterclockwise rotation of the maxilla, and reduce the constriction of the anterior part of the palate. SN - 1009-4598 UR - https://www.unboundmedicine.com/medline/citation/17926844/[Three_dimensional_finite_element_analysis_of_craniofacial_skeleton_protraction_at_medium_position]_ DB - PRIME DP - Unbound Medicine ER -