Avaliação do uso de um bissilano na adesão do cimento resinoso ao titânio

Abstract

The implementations in the consolidation processes are in clinical dental practice due to its ability to adapt to masticatory and aesthetic preserving the remaining teeth. The use of cemented prostheses on titanium interfaces requires the use of resin cements for the construction of the prosthetic crown. The treatment of the effect is a bonding of the cement to the interface and to the different silane molecules are produced to make the bond stronger and longer lasting. The objective of this study was to evaluate the influence of bissilane on the adhesive strength between titanium and resin cement. For this, 30 commercially pure grade 4 (12.7 x 2 mm) titanium discs were randomly distributed for the treatment with silane: A – Commercial silane (control group); B - Experimental silane 2% methacryloxypropylsilane (MPS); and C- Experimental silane containing 2% MPS and 0.2% bis-1,2-(triethoxysilyl)ethane (BTSE). The commercial silane was applied following the same manufacturer and an experimental silanization followed the same protocol. Then, composite resin cylinders (5 x 5 mm) were healed with resin (U200, 3M) and polymerized by blue light for 1 min. The samples were stored for 24 hours and 90 days in distilled water at 37 ° C to be subjected to the mechanical shear test in a universal machine with the name of a titanium-resin load with a load cell of 2kN and a loading speed of 0 , 5 mm / min. The force at time of recording was recorded and the mean and standard deviation of each group were calculated. The groups were compared with the analysis of variance at 2% considering the level of significance of 5%. Greater resistance was observed when the experimental silanes were applied. The presence of BTSE did not become initial and was effective in maintenance after aging in water. In order to be useful, the BTSE may be an interesting tool for maintaining titanium adhesion.