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Proceedings Paper

Repairing method of fixed partial prostheses in dentistry: laser welding
Author(s): Meda L. Negrutiu; Cosmin Sinescu; Dalibor Cozarov; Laurentiu Culea; Mihai Rominu; Daniela M. Pop
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Paper Abstract

Laser Welding is an advantageous method of connecting or repairing metal prosthetic frameworks because there are fewer effects of heating on the area surrounding the spot to be welded, and no further procedures, such as those used for conventional soldering, are necessary. Laser welding has been increasingly applied for fabricating the metal frameworks of prostheses and for other procedures, such as recovering the metal ridge and cusp, blocking holes on the occlusal surfaces after excess occlusal adjustment, thickening the metal framework, or adding contact points after excess grinding and adjusting of the crown margins. The objective of this study are represented by investigation and evaluation of three types of soldering compare to laser welding. The method is represented by the laser welding with a pulsed Nd-Yag Laser equipment. Other joints were produced, using three different soldering techniques. These joining areas were investigated for their quality and their corrosion properties. Corrosion attack was confirmed by electron microscopy. The investigations confirm the quality of laser welding. The investigated different laser welding methods revealed minimal corrosion and offers clear-cut advantages compared to the other soldering methods. Dental alloys are subjected to functional influences in the oral cavity and interact with the intraoral enviroment.

Paper Details

Date Published: 11 February 2008
PDF: 8 pages
Proc. SPIE 6843, Lasers in Dentistry XIV, 684309 (11 February 2008); doi: 10.1117/12.764995
Show Author Affiliations
Meda L. Negrutiu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Cosmin Sinescu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Dalibor Cozarov, Dali's Dentech (Romania)
Laurentiu Culea, Politechnica Univ. Timisoara (Romania)
Mihai Rominu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Daniela M. Pop, Univ. of Medicine and Pharmacy Victor Babes (Romania)

Published in SPIE Proceedings Vol. 6843:
Lasers in Dentistry XIV
Peter Rechmann; Daniel Fried, Editor(s)

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