[Stress analyses and comparison of the Kennedy III dentition defect restored with removable partial denture].

PURPOSE

To investigate the stress distribution of the abutment and oral mucosa in Kennedy III, restored with removable partial dentures, either unilateral or bilateral designed.

METHODS

Five FEA models were established for the partial edentulous and RPDs, which were divided into group A and group B. According to the denture design, bilateral (B) or unilateral (A) designed. The 3-D finite element analyses were proceeded and calculated with the help of the software ANSYS. Paired t test was used for statistical analysis using SAS 6.2 software package.

RESULTS

The maximum stress appeared near the cervical mesial area of the first bicuspid and the second molar. There was no significant difference between the two groups in the stress distribution of the abutment and oral mucosa (P>0.05).

CONCLUSION

In regard to the stress of the abutments, unilateral designs have no excess stress formed when RPD was used to restore Kennedy III dentition defect.