Tooth-implant connection: some biomechanical aspects based on finite element analyses.
This study investigated, with the use of two- and three-dimensional finite element analysis, the peri-implant stress that occurred during loading of a tooth that was rigidly connected to a distally placed implant. A fixed bond between the bone and the implant was assumed, while the periodontal ligament was represented by means of three-dimensional nonlinear visco-elastic spring elements. Two different loading conditions were compared in the study: i) an axially directed static load of 50 kg that was applied to the tooth for 10 s, and ii) a transitional load of 50 kg that was applied for 5 milliseconds. Load duration appeared to have a greater influence than load intensity on the stress distribution in the bone around an implant and a rigidly connected tooth. Static load is, therefore, potentially more harmful for peri-implant bone than transitional load. The periodontal ligament seems to play a key role in the stress distribution between a tooth and a rigidly connected implant.
Menicucci
Giulio
G
Prosthodontic Department, School of Dentistry, University of Turin, Turin, Italy.
Mossolov
Alexei
A
Mozzati
Marco
M
Lorenzetti
Massimo
M
Preti
Giulio
G
D000539:Alveolar Process / Q000503:physiopathology*; D019245:Compressive Strength; D003198:Computer Simulation; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003799:Dental Stress Analysis / Q000379:methods*; D003830:Denture, Partial, Fixed; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000503:physiopathology / Q000534:rehabilitation; D008334:Mandible; D008954:Models, Biological; D003765:Models, Dental; D010513:Periodontal Ligament / Q000503:physiopathology*; D013314:Stress, Mechanical; D014086:Tooth Mobility / Q000503:physiopathology*; D016474:Weight-Bearing
D015921:Dental Implants