Influence of axiopulpal line angle and proximal retention on fracture strength of amalgam restorations.
Proximal retentive grooves significantly increase the strength of amalgam restorations in Class II cavities. There were no remarkable differences that could have clinical significance between sharp or rounded axiopulpal line angles and rounded or rounded and sloped pulpal walls. Chromium-cobalt dies are effective for tests of fracture strength of amalgam restorations.
D002858:Chromium Alloys; D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000379:methods*; D003782:Dental Pulp / Q000033:anatomy & histology; D003793:Dental Restoration, Permanent; D006801:Humans; D003765:Models, Dental; D013314:Stress, Mechanical; D013499:Surface Properties
D002858:Chromium Alloys; D003723:Dental Amalgam