title: The retention of amalgam and composite resin by a smooth, reverse-tapered pin.
abstract: In this study, the retention of composite resin and amalgam by a smooth, reverse-tapered pin was compared to that of threaded pins. The smooth pin was significantly lower in retention than the threaded pins for each material, and caused a greater frequency of failure of the restorative material than the threaded pins. The newer smooth pin is probably not an improvement over the conventional threaded design.
authors.affiliation: Department of Restorative and Prosthetic Dentistry, The Ohio State University, College of Dentistry, Columbus 43210.
authors.forename: W W
authors.initials: WW
authors.lastname: Brackett
authors.forename: J H
authors.initials: JH
authors.lastname: Bailey
mesh_terms: D000704:Analysis of Variance; D003188:Composite Resins; D003723:Dental Amalgam; D003772:Dental Pins; D003799:Dental Stress Analysis; D008422:Materials Testing; D013193:Stainless Steel; D014025:Titanium
chemical_list: D003188:Composite Resins; D013193:Stainless Steel; D003723:Dental Amalgam; D014025:Titanium