Fracture resistance of complex amalgam restorations with peripheral shelves used as resistance features.
This in vitro study compared various peripheral shelves (steps) as resistance features for complex amalgam restorations. Three different sizes of peripheral shelves were evaluated: 1 mm x 1 mm, 2 mm x 2 mm, and 1 mm cervically x 2 mm pulpally. The resistance of these features was compared to a control group that utilized two amalgam pins. The 1 mm x 1 mm shelf provided significantly less resistance than the other groups.
Reagan
S E
SE
College of Dentistry, University of Oklahoma Health Sciences Center 73190.
Gray
S E
SE
Hilton
T J
TJ
D000704:Analysis of Variance; D003722:Dental Alloys; D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000379:methods*; D003772:Dental Pins; D006801:Humans; D008422:Materials Testing
D003722:Dental Alloys; D003723:Dental Amalgam; C072894:Valiant PhD