Stress Analysis of Tunnel Preparation of Maxillary Premolars.

doi:10.13701/j.cnki.kqyxyj.2016.03.013

Journal of Oral Science Research ›› 2016, Vol. 32 ›› Issue (3): 266-267.DOI: 10.13701/j.cnki.kqyxyj.2016.03.013

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Stress Analysis of Tunnel Preparation of Maxillary Premolars.

WANG Xia-xia¹, MA Yan-zhao^2*, CHEN Hong², MA Xiao², CHEN Zhi^1*

1. School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China;
2. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

Received:2015-12-29 Online:2016-03-28 Published:2016-03-29

Abstract

Abstract: Objective: To analyze the stress distribution and failure risk of tunnel-prepared maxillary premolars with different marginal ridge heights and restorative materials. Methods: The 3D models of tunnel-prepared maxillary premolars with marginal ridge height 1.5mm, 2.5mm and 3.5mm were created. The restorative materials were resin-based composite (CR) and resin-reinforced glass-ionomer cement (GIC). A vertical load of 100N was applied at the contact areas of normal occlusion. Stress distribution of enamel, dentin and restorations were calculated and failure risks were evaluated separately. Results: Among different marginal ridge height, the value of Mohr-Coulomb failure criterion (MCFC) was the lowest in 2.5mm height. Among different restorative materials, the value of MCFC was lower in tunnel preparation restored with resin composite than that with glass-ionomer cement. Conclusion: Tunnel preparation with 2.5mm of marginal ridge and restored with resin composite exhibited better mechanical properties.

Key words: Tunnel preparation , Three-dimensional finite element analysis , Mohr-Coulomb failure criterion

CLC Number:

R780.1

WANG Xia-xia, MA Yan-zhao, CHEN Hong, MA Xiao, CHEN Zhi. Stress Analysis of Tunnel Preparation of Maxillary Premolars.[J]. Journal of Oral Science Research, 2016, 32(3): 266-267.

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Stress Analysis of Tunnel Preparation of Maxillary Premolars.

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