[Effect of the number of splinted abutments on stress distribution of support tissue]
OBJECTIVE:This study applied an SJ-1 bolt attachment partial denture to restorate distal extension edentulous areas.Finite element analysis (FEA) was used to monitor induced around abutment supporting tissues under the different number of splinted abutments.METHODS:Finite element analysis. RESULTS:The result demonstrate that the reduction of the number of splinted unit from three to two resulted in an insignificant increase of stress records,whereas reduction of the number from two to one resulted in a significant increase of stress nine times greater than the three  unit splint values.CONCLUSION:Hence,at least two teeth on each side should be splinted when SJ  1 bolt(extracoronal) distal extension attachment prostheses are used.
Zheng
Y L
YL
Department of Prosthodontics,School of Stomatology, Shanghai Second Medical University. Shanghai 200011,China.
Chen
L
L
Zhang
F Q
FQ
Wang
C T
CT