Mechanical effects of implant-tooth rigid connection by a fixed partial denture: a 3d finite element analysis.
This study investigated the mechanical behaviour of tooth-implant fixed partial dentures by three-dimensional Finite Element Analysis. Titanium implants of various length and diameter were rigidly connected to a premolar either by two connected ceramic crowns or by a three unit Fixed Partial Denture. The implant acted like the fulcrum of an orthodontic device inducing tooth intrusion. Bone stresses appeared around the neck of the implant. Implant and abutment's stresses were meaningfully less intense with high diameter and low span. Implant length was a less influencing parameter. The use of wide-bodied implants is recommended in selected cases of short-span fixed partial dentures.
Hopital Bretonneau, Paris Descartes University, Paris, France. adriennaveau@hotmail.com
Adrien
A
Naveau
Laurent
L
Pierrisnard
D016301:Alveolar Bone Loss / Q000209:etiology; D001641:Bicuspid / Q000502:physiology*; D019245:Compressive Strength; D003198:Computer Simulation; D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects; D003799:Dental Stress Analysis / Q000379:methods; D003830:Denture, Partial, Fixed; D055119:Elastic Modulus; D020342:Finite Element Analysis; D013718:Tensile Strength
D015921:Dental Implants