Edition V06N03 | Year 2012 | Editorial Artigo Inédito | Pages 60 to 70
Introduction: The quality of the bone-implant interface is directly influenced by implant surface roughness and a roughness average, with the Sa between 1 to 2 μm, has demonstrated better clinical and laboratory results. In Brazil, more than two million implants per year are installed, where 79% are manufactured by domestic companies. However, very little is known or published about the characterization of surfaces of these implants, on the micrometer level. The aims of this study are to evaluate and characterize numerically the surface of the implants of SIN (Sistema de Implante Nacional) company, one of the five largest companies in the Brazilian market.
Methods: Were evaluated a total of 6 implants, purchased directly on the market, of two different designs (Tryon-HE and Strong-SW) and different batches, using light interferometry. Were performed 9 measurements randomly chosen for each unit, 3 on the tops, 3 on the valleys and 3 on the flanks of the threads. The same pattern was followed for evaluation by scanning electron microscope.
Results: The analyzed implants from this company showed Sa values of 0.84μm for Tryon-HE and 1.01 mm for Strong SW. Comparing the batches, only the SW design showed statistically significant differences between them.
Conclusions: The roughness values found herein categorize the surfaces of Tryon-HE as minimally rough, and Strong-SW implants as moderately rough.
Rosa MB, Albrektsson T, Francischone CE, Schwartz Filho HO, Wennerberg A. Characterization of implants surface of the five largest companies in the Brazilian market, on micrometric level. Part III: SIN implants. Dental Press Implantol. 2012 July-Sept;6(3):60-70.