Abstract
In recent years, laser welding has become one of the essential techniques to repair metallic dentures in prosthetic dentistry. The purpose of this study was to evaluate the porosity in laser-welded specimens non-destructively inspection using Micro-CT. The soldering procedure was conducted in rectangular cast metals. The porosity in the welded area was evaluated using a Micro-CT and the tensile strength of the welded specimens was measured. Then the relationship between the porosity and the tensile strength was investigated. As for the laser welding between similar metal performed by a clinic every day, there were little welding defects, and that welding strength was enough was shown by this study.
