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Updated: Aug 25, 2026

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
[A three-dimensional finite element analysis of stress distribution in mandibular FPDs with different length pontics]
Li-jin Yan1, Hong-chen Liu, Lu Bai
1Department of Stomatology, General Hospital of PLA, Beijing 100853, China.
Objective:
To investigate the stress distribution in the mandibular fixed partial denture (FPD) by changing the length of pontics.
Methods:
Based on a 3-DFE model of the mandibular FPD, we analyzed the stress distribution in the mandibular FPDs by loading the same level force at pontics with different lengths that were 2 to 4 times of normal length.
Results:
The distribution trends of the stresses in the mandibular FPDs with differently elongated pontics were similar, but the highest von Mises stress in the bridge was enlarged.
Conclusion:
Damages may develop in the mandibular FDP, when the length of the pontic is longer than 3 times of normal length.
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