Abstract
The effects of surface texture in form of elliptical dimples on the titanium–porcelain bonding strength were investigated. The surface texture was mechanically engraved at all combinations of three different area fractions and two different depths. The morphologies of the titanium surface were studied by scanning electron microscopy. The adhesion between the Ti and porcelain was evaluated by a three point bending test. With the area fraction and depth of the dimples increasing, the surface roughness increased accordingly, whilst the contact angle value decreased. Compared to the sandblasted and polished groups, the surface roughness and wettability of the textured groups had been significantly improved, which led to the increased mechanical interlocking between the porcelain and titanium.
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