A STUDY ON THE PRESSING ACCURACY OF THE REUSED IPS-EMPRESS INGOT.
- Author:
Byung Kwen SONG
1
;
Hyun Bae PARK
;
Sang Chun OH
;
Tae Ho JIN
Author Information
1. Dept. of Prosthodontics, College of Dentistry, Wonkwang University, Korea.
- Publication Type:Original Article
- MeSH:
Celiac Disease;
Ceramics
- From:The Journal of Korean Academy of Prosthodontics
1997;35(2):357-364
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
IPS-empress system is one of widely used all ceramic system. The purpose of this study was to determine the pressing accuracy of refused IPS%Empress ingot. 10 specimens were made using new ingot first, and using the rests of the specimen the another group of specimens were made next. Finally, the third group of specimens were made with same procedure mentioned above. The results obtained in this study were as follows ; 1. The pressing accuracy of the first group of specimen was 96.1%, that of the second group was 95.4%, and that of the third group was 95.4%. There was no statistical signifcance among them, that is, the reuse of the IPS-Empress ingot did not influence on the pressing accuracy. 2. the common site of the defect in pressed ingot was central area at the margin opposite of sprue hole.
