Open AccessEvaluation of fracture resistance and color stability of crowns obtained by layering composite over zirconia and polyetheretherketone copings before and after thermocycling to simulate oral environment: An in vitro study
Author(s) -
Sanath Kumar Shetty,
Mohammed Shabbir Hasan,
Mohammed Zahid,
Karkala Syed Suhaim,
Fahad Mohammad,
Tharammal Fayaz
Publication year - 2020
Publication title -
journal of pharmacy and bioallied sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.268
H-Index - 36
eISSN - 0976-4879
pISSN - 0975-7406
DOI - 10.4103/jpbs.jpbs_150_20
Subject(s) - crown (dentistry) , cubic zirconia , materials science , dentistry , universal testing machine , composite number , ceramic , composite material , fracture (geology) , post hoc , layering , orthodontics , medicine , botany , biology , ultimate tensile strength
Most common material used for the fabrication of an implant restoration is full-ceramic crown or an all-ceramic crown. Frequent chipping of the ceramic under occlusal load has posed a great problem to the clinician and the patient. Composites have been layered over zirconia successfully in the recent past to overcome this problem. This study, thus, aimed to evaluate and compare the fracture resistance and color stability of crowns obtained by layering composite over zirconia and polyetheretherketone (PEEK) copings before and after thermocycling to simulate oral environment.