Composite prosthetic components on dental implants: elements arrangement and biomechanics
| Author | Affiliation |
|---|---|
Diliūnas, Saulius | Kauno technologijos universitetas |
| Date |
|---|
2012-09-07 |
Objectives: Conventionally, inert and rigid metal, zirconia or ceramic prosthetic components are widely used for dental implant restorations. Connecting a rigid prosthetic element with osseointegrated implant, leads to firm though immobile restoration which is in controversy to physiological mobility of natural teeth. The immobility of dental implant constructions may determine cracks of the prosthesis, peri-implant marginal bone loss, and difficulty to combine natural teeth and dental implants in multiple restorations. Therefore amortization effect of dental implant prosthetic constructions matters of particular importance. The aim of present study was to evaluate the amortization effect and mechanical strength of composite prosthetic dental implant components and to establish the most appropriate dental implant prosthetic construction closest to the mobility and strength of natural tooth. Methods: 10 implants were inserted in acrylic cylindrical blocks, 4 groups of prosthetic components were prepared: mono-block composite restoration; composite abutment + ceramic crown; ceramic abutment + composite crown; mono-block ceramic restoration. The crowns were fabricated according to the model of lower second premolar tooth. Prostheses were bonded together and attached to implant titanium connection bases with adhesive systems and dual-curing resin cement. Horizontal mobility of all constructions was tested with electromechanical perio-measuring device. Tension and compression resistance as well as vertical shortening of prosthetic constructions were tested with load measuring device. Data were analyzed statistically using SPSS 19.0 software. [...].