Prosthetic restoration after coronoradicular resection: mechanical behavior of the distal root remaining and surrounding bone.
OBJECTIVE
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.
Augereau
D
D
Department of Dental Surgery, Faculty of Dentistry, University of Paris V, France.
Pierrisnard
L
L
Renault
P
P
Barquins
M
M
D000539:Alveolar Process / Q000502:physiology*; D001641:Bicuspid / Q000502:physiology; D000044:Dental Abutments; D003722:Dental Alloys / Q000737:chemistry; D003804:Dentin / Q000502:physiology; D003779:Denture Design; D003830:Denture, Partial, Fixed; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D008334:Mandible; D008963:Molar / Q000601:surgery*; D016012:Poisson Distribution; D011176:Post and Core Technique; D015203:Reproducibility of Results; D012307:Risk Factors; D013314:Stress, Mechanical; D019228:Tooth Crown / Q000601:surgery*; D014092:Tooth Root / Q000502:physiology / Q000601:surgery*
D003722:Dental Alloys