Gopisetty Harshini,  S. Venkat Aditya,  K. Mahendranadh Reddy,  Y. Mahadev Shastry,  G. V. Krishna Mohan Reddy,  Jayakrishna Babu

ABSTRACT

PURPOSE: The aim of the study was to evaluate the shear bond strength of ceramic layered to commercially pure Titanium after Tungsten inert gas (TIG) welding. MATERIALS AND METHODOLOGY: 60 pre fabricated titanium blocks were taken and were equally and randomly allocated in to two groups i.e., TIG welding and control group. The TIG welded group samples were ditched on one end in an area of 5mm x 5mm to a depth of 0.5mm for layering the compatible welding material using TIG welding technique. Ceramic was veneered onto both the group samples using putty mould which was with inner dimensions of 5 x 5x 2mm in area. Universal testing machine was used to measure the shear bond strength and the results were statistically analysed. RESULTS: The average shear bond strength of ceramic veneered to titanium was 25.3N/mm2. Whereas for the ceramic veneered to TIG welded group samples was 53.64N/mm2. Significant difference was found in the bond strength between the TIG welded and control group. CONCLUSION: Within the limitation of this study, it was concluded that TIG welding gives a better metal-ceramic bond strength.