Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (16): 2545-2550.doi: 10.3969/j.issn.2095-4344.2015.16.016

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Stress distribution in natural maxillary central incisor and implant: a three-dimensional finite element analysis

Wan Lin-zi1, Sun Lei1, Wu Xi-feng2, Lin Zhen-yan1, Xu Liang-wei3, Liu Zhen-zhe1, Xu Duo-ling1, Li Yang1, Zhou Yan-min4, Gao Yong-bo1   

  1. 1Longgang District Central Hospital, Zunyi Medical College, Shenzhen 518116, Guangdong Province, China; 2Longgang District People’s Hospital of Shenzhen, Shenzhen 518172, Guangdong Province, China; 3Zhejiang University of Technology, Hangzhou 310014, Zhejiang Province, China; 4Hospital and School of Stomatology, Jilin University, Changchun 130021, Jilin Province, China
  • Received:2015-03-18 Online:2015-04-16 Published:2015-04-16
  • Contact: Gao Yong-bo, M.D., Professor, Longgang District Central Hospital, Zunyi Medical College, Shenzhen 518116, Guangdong Province, China Corresponding author: Zhou Yan-min, M.D., Professor, Hospital and School of Stomatology, Jilin University, Changchun 130021, Jilin Province, China
  • About author:Wan Lin-zi, Studying for master’s degree, Physician, Longgang District Central Hospital, Zunyi Medical College, Shenzhen 518116, Guangdong Province, China
  • Supported by:

    the Natural Science Foundation of Guangdong Province, No. S2013010014978; the Science and Technology Plan of Shenzhen, No. JCYJ20140411150159436; the Scientific Research and Development Foundation of Shenzhen, No. CXZZ20130517140636687; the Knowledge Innovation Program of Shenzhen, No. JCYJ20140414124506131

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Abstract:

BACKGROUND: Biomechanical compatibility is the necessary condition to ensure the stable osseointegration with implants that then can function over a long period; therefore, it is especially important to get knowledge about distribution of stress and strain between the maxillary central incisor and its surrounding bone tissue.
OBJECTIVE: Based on five different anatomical types of natural teeth, to study the regularity of stress distribution between the maxillary central incisor root and implant. 
METHODS: According to the five different anatomical types of natural maxillary central incisors, UGNX and ANSYS were used to set up three-dimensional finite element models (B1, B2, M1, M2, P1) for the implant and surrounding structures, which were under 100 N static load at angles of 0º, 30º, 45º, 60º, 90º with the long axis of teeth. Then, the stress distribution between the five kinds of maxillary central incisor roots and implants was analyzed.
RESULTS AND CONCLUSION: Among the five different anatomical types, the equivalent stress for both the natural central incisor and implant were increased with the increasing of angles, and the implant had a higher raising trend. The equivalent stress for the natural tooth concentrated upon B1 for the maximum value and M1 for the minimum value; while the equivalent stress for the implant focused on the maximum value at M1 and the minimum value at M2. There was a gap of 2%-31% between the equivalent stresses for the natural tooth roots and a gap of 4%-21% for the implants. The stress distribution range for the implant was just smaller than that for the natural tooth roots. It implies that the bit force of implant and natural tooth is in positive proportion to the bite angles, and the bite force that implant can burden is smaller than that the central incisor can.


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


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Key words: Dental Implants, Dental Stress Analysis, Finite Element Analysis

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