Comparison of stress distribution in dental crown with different cusp angles: 3D finite element analysis

Abstract

The purpose of this study is to measure the failure risk of a crown depending on the cusp angle. Three all-ceramic crown models consisting of C_H (high incline), C_M (middle incline), and C_L (low incline) are designed. Stress is applied to the crown with Loading case-1 (top of cusp tip) and Loading case-2 (middle of cusp ridge) with the use of FEA software. In Loading case-1 and case-2, the C_H showed the highest Maximum Principal Stress (MPS) while the CL showed the lowest MPS. The cusp angle is an influential factor affecting stress distribution in dental crowns.

Keywords:

• Finite element
• tooth crown
• stress distribution
• cusp angle

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was supported by the [Basic Science Research Program through the National Research Foundation (NRF) of Korea], funded by the [Ministry of Education] under Grant [No. 2017R1D1A1B03035688]; supported by the [Industrial Strategic Technology Development Program], funded by the [Ministry of Trade, Industry & Energy (MOTIE, Korea)] under Grant [No. 10073062]; and supported by the [Supercomputing Center/Korea Institute of Science and Technology Information with supercomputing resources including technical support] under Grant [No. KSC-2016-S1-0036].