All

Mechanics in Engineering ›› 2017, Vol. 39 ›› Issue (5): 441-444.doi: 10.6052/1000-0879-17-075

Previous Articles     Next Articles

FRACTURE OF TOOTH CROWNS UNDER STATIC AND IMPACT LOADINGS

WANG Yingni1, RONG Qiguo2   

  1. 1. Deerfield Academy, MA 01342, USA;
    2. Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China
  • Received:2017-03-07 Revised:2017-03-24 Online:2017-10-15 Published:2017-11-06

Abstract:

The normal teeth involve many weak structures, such as pit and fissure, wedge-shaped defect, and cracked tooth. It remains an issue to be explored how to evaluate the effect of these weak structures on the crack initiation and the fracture of the teeth, due to limited evaluation methods. This paper analyzes the failure modes of the dental crown under static and dynamic loads by experimental and numerical methods. It is shown that the weak structures are the determinative factors of the crown fractures, which are in line with the second strength theory. The results of this study will provide a theoretical basis for clinical diagnoses and treatments.

Key words:

cracked teeth|failure modes|finite element method

CLC Number: 

  • O39