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Prosthetic restoration after coronoradicular resection: mechanical behavior of the distal root remaining and
D Augereau1, L Pierrisnard, P Renault
1Department of Dental Surgery, Faculty of Dentistry, University of Paris V, France.
Purpose:
This 3-dimensional finite element analysis evaluated: (1) the mechanical behavior of the distal root remaining after resection of the mesial root in a mandibular molar; (2) the consequences of the remaining distal root displacements on the bone; and (3) the role of the radicular post in the transmission of stress to the remaining root.
Methods:
Three-dimensional finite element analysis was performed.
Results:
The most reliable solution for the remaining root and surrounding bone consisted of fitting a conventional fixed partial denture with abutments on either side of the amputated root. The solution provided a single cantilever supported only by the residual root.
Conclusions:
This analysis makes it possible to quantify, in the model situation, the risks taken for each prosthetic option.