Open AccessTHE EFFECT OF SOLDERING, ELECTROWELDING, AND CAST-TO PROCEDURES ON THE ACCURACY OF FIT OF CAST IMPLANT BARS
Author(s) -
Panagiotis C. Zoidis,
Sheldon Winkler,
Nikolaos D. Karellos
Publication year - 1996
Publication title -
implant dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.538
H-Index - 65
eISSN - 1538-2982
pISSN - 1056-6163
DOI - 10.1097/00008505-199600530-00002
Subject(s) - abutment , gold alloy , stereo microscope , materials science , implant , soldering , orthodontics , dentistry , alloy , composite material , structural engineering , engineering , surgery , medicine
The effect of three different connecting procedures on the accuracy of fit of cast implant bars over their supporting abutments was investigated. Thirty Hader implant bars were waxed on a master cast over two abutment analogs and cast in a type IV gold alloy. The bars were sectioned and divided into three groups of ten implant bars according to the connecting procedure that was to be followed. Group 1 bars were connected by soldering, Group 2 bars were connected by electrowelding, and Group 3 bars were connected with the cast-to procedure. The accuracy of fit of each group of bars was measured at the gold cylinder-abutment interface in microns using a stereomicroscope. The use of the cast-to procedure resulted in a more accurate fit as compared with the soldering and the electrowelding techniques.