title: Influence of Resin Cements on the Tension Force of Cast Frameworks Made by the Technique of Framework Cemented on Prepared Abutments.
abstract: This study evaluated the tension force of cast frameworks made by the technique of framework cemented on prepared abutments using two different resin cements. Forty multi-unit abutment analogs were individually fixed with chemically cured acrylic resin inside PVC cylinders using a parallelometer. Brass cylindrical abutments were tightened to the multi-unit abutments to be used as spacers and then castable UCLA abutments were positioned above. These abutments were cast with Ni-Cr and then divided into 4 groups (n=10): cemented with RelyX U100(r); cemented with RelyX U100(r) and simulation of acrylic resin polymerization process; cemented with Multilink(r); and cemented with Multilink(r) and simulation of acrylic resin polymerization process. Abutments were cemented according to manufacturers' instructions. In a universal testing machine, tensile strength was applied in the direction of the long axis of the abutments at 1 mm/min crosshead speed until displacement of the luted abutments was obtained. The values of maximum tensile force (N) required for the displacement of the luted abutments were tabulated and analyzed statistically by one-way ANOVA with a 95% confidence level. No statistically significant difference was found among the groups (p>0.05). There was an increase in mean tension force when the specimens were subjected to the simulation of acrylic resin polymerization process, but the results did not differ statistically. Both resin cements presented positive results as regards the retention of luted abutments on their respective multi-unit abutments. Both materials may be indicated for the technique of framework cemented on prepared abutments when professionals pursuit better adaptation of implant-supported frameworks.
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Ana Paula
authors: AP
authors: Perroni
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Érica Alves
authors: ÉA
authors: Gomes
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Amália Machado
authors: AM
authors: Bielemann
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Bruna
authors: B
authors: Baseggio
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Leonardo
authors: L
authors: Federizzi
authors: Department of Prosthodontics and Dental Materials, Dental School, IMED - Universidade Meridional, Passo Fundo, RS, BR.
authors: Aloísio Oro
authors: AO
authors: Spazzin
authors: Federal University of Pelotas, Pelotas, RS, BR.
authors: Mateus Bertolini Fernandes
authors: MB
authors: dos Santos
mesh_terms: D000044:Dental Abutments; D019279:Resin Cements; D013718:Tensile Strength
chemical_list: D019279:Resin Cements