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[Clinical analysis of laser welding on porcelain bonded metal surface]
Jia-wei Weng1, Wen-an Dai, Xue-ying Wu
1Shanghai Stomatological Disease Center, Shanghai 200031, China. wjw505@126.com
Purpose:
To evaluate the clinical effect of laser-welded crowns and bridges.
Methods:
Two hundred defective crowns and bridges were welded by using Heraplus laser welding machine, and then restored by porcelain.
Results:
After being welded ,those defective crowns and bridges of different materials fit well and their marginal areas were also satisfactory. During the follow up period of one year, no fractured porcelain and crack were found at welding spots.
Conclusions:
The technology of laser welding has no direct effect on welding spots between metal and porcelain and could be used to deal with the usual problems of the crowns and bridges.