Objective: The aim of this study was to evaluate the microtensile bond strength between a composite resin and aluminum-reinforced feldspathic porcelain (Vitadur Alfa, VITA) employing two adhesive systems. Methods: Ten ceramic blocks (6x6x4xmm) were confectioned, according to the manufacturer's instructions, and the surface were etched by hydrofluoric acid 10% / 3min. They were randomly separated into two groups, depending on the adhesive system which was applied and light activated: G1 – Single Bond; G2 – Clearfil SE Bond. Afterwards, the composite resin (W3D-Master, VITA) were condensed using an incremental technique (2mm each layer) and light polymerized (40s) until forming a 4mm block of high. After the storage (distilled water/37oC/7 days), the ceramic/resin blocks were sectioned in two axes, x and y, with a diamond disk under refrigeration (Labcut 1010) to obtain the samples - sp non-trimming (6 sp per block and 30 per group) with 1 ± 0.1mm² of adhesive area. Each sp was attached to an adapted device with cyanoacrylate and the tensile test was performed in a universal testing machine at a crosshead speed of 1mm/min. Result: Data were submitted to the statistical analysis (t test – Student; p>0,05) and it showed that the group G1 (12.82 ± 3,13MPa) was statistically superior than G2 (6.41 ± 3,17MPa). Conclusion: It was possible to conclude that Single Bond provided better bond strength between evaluated ceramic and composite.

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