Int J Stomatol

Inter J Stomatol ›› 2011, Vol. 38 ›› Issue (1): 19-21.doi: 10.3969/j.issn.1673-5749.2011.01.005

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Three-dimensional finite element analysis on the effect of root canal size on fracture

ZHANG Yan1,2, QIN Xiao-hong2, YAO Ji3, LI Sha-sha2, ZHANG Li-jie3.   

  1. 1. Dept. of Oral Medicine, School of Stomatology, Zunyi Medical College, Zunyi 563003, China; 2. Dept. of Oral Medicine, Kunming Stomatological Hospital, Kunming 650011, China; 3. Dept. of Mechanics, Faculty of Civil Engineering and Architecture, Kunming University of Science and Technology, Kunming 650024, China
  • Received:2009-11-18 Revised:2010-11-28 Online:2011-01-20 Published:2011-01-20

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Abstract:

Objective To evaluate the effects of root canal size on the distribution of the stress located on the root. Methods A three-dimensional finite element model of maxillary second premolar（single tube） was created, by varying the root canal size to analyze the distribution of the stress located on different root models. Results The root canal size slightly affected the stress level. The stress variety located on the coronal 1/3 of the root. Conclusion The results suggest that clinical root canal treatment should be just removing the infected tissue and avoiding over-cutting of dentin, root canal preparation no more than 1/3 of the original root canal is secure.

Key words: root canal, stress analysis, three-dimensional finite element


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