[3-D FEA of the stress state of abutment and its periodontal tissue with three different retention styles in the absence of mandibular anterior teeth].
OBJECTIVE
To study the stress of the abutment and its periodontal tissue with different designs of retainer (type of retainer, place)in the same situation of dentural defect.


METHODS
Based on the 3-D FEA database of RPD, the stress state of the abutment and its periodontal tissue was analyzed to choose the optimal retainer with the same situation of dentural defect.


RESULTS
With three different retainer designs, the retainer on the second premolar and the first molar exerted the smallest stress on the abutment and its periodontal tissue, while the retainer on the first premolar and the first molar had the largest stress.


CONCLUSIONS
Analysis for the health condition of abutment and its periodontal tissue is imperative for the selection of different designs of retainers.
Zhao
Jun
J
Department of Prosthodontics, School of Stomatology, Ninth People's Hospital, Shanghai Jiaotong University, China.
Wei
Bin
B
Li
Ling
L
Zhang
Fu-qiang
FQ
D001641:Bicuspid; D000044:Dental Abutments; D003779:Denture Design; D003832:Denture, Partial, Removable; D006801:Humans; D008963:Molar; D010519:Periodontium; D014070:Tooth