A STUDY ON FRACTURE STRENGTH OF CONVENTIONAL AND COPY-MILLED IN-CERAM CROWNS / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 417-430, 1997.
Article
Dans Coréen
| WPRIM
| ID: wpr-166654
ABSTRACT
The purpose of this study was to compare the fracture resistance of copy-milled and conventional In-Ceram crown. Four groups of ten uniform sized all-ceramic crowns were fabricated. In-Ceram Spinell and In-Ceram Alumina crowns were fabricated as control group, Celay In-Ceram Spinell and Celay In-Ceram Alumina crowns were fabricated as test group. All specimen were cemented on stainless steel master die with resin cement, and stored in 37degrees C water for 1 day prior to loading in Instron testing machine. Using a steel ball at a crosshead speed of 0.5mm/min, the crowns were loaded at 30degree angle until catastrophic failure occurred. The results obtained were as follows 1. With the value of 984.8N+/-103.67N, the strength of Celay In-Ceram Alumina crowns had a significantly higher fracture strength than conventional In-Ceram Alumina crowns(876.2N+/-92.20N) (P0.05). 3. The In-Ceram Alumina crowns had a significantly higher fracture strength than In-Ceram Spinell crowns in both methods(P<0.05). 4. Ther order of fracture strength was as followed Celay In-Ceram Alumina, In-Ceram Alumina, Celay In-Ceram Spinell and In-Ceram Spinell crowns
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Acier inoxydable
/
Acier
/
Eau
/
Céments résine
/
Couronnes
/
Oxyde d'aluminium
langue:
Coréen
Texte intégral:
The Journal of Korean Academy of Prosthodontics
Année:
1997
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS