Statement of problem:
Endodontic access preparation through lithium disilicate ceramic restorations may damage the restoration and compromise its load-bearing capability.
Purpose:
The purpose of this in vitro research was to investigate the effect of simulated endodontic access preparation through lithium disilicate glass-ceramic restorations on their load to failure.
Material and methods:
Sixty lithium disilicate glass-ceramic (IPS e.max CAD) complete-coverage restorations were milled and crystallized. Five coats of die relief were applied internally in the crown to provide a cement space approximately 60 μm in thickness. Composite resin dies were fabricated by backfilling each crown. The specimens were then stored at 37°C and 100% humidity for 30 days. Th…
MedWorm: Dentistry
