title: Evaluation of shear strength at the cement-endodontic post interface.
abstract: The strength characteristics of the cement-implant interface were evaluated for smooth-tapered, threaded, and porous-surfaced endodontic implants with the use of different cements. Specifically, tensile and torsional shear strengths were measured for zinc phosphate, polycarboxylate, glass-ionomer, silicophosphate, and AH-26 cements. The results indicated superior shear strength characteristics for threaded endodontic implants on axial loading. However, this strength was diminished when torsional forces were applied. Porous-surfaced endodontic implants showed strong resistance to both axial and torsional loading.
mesh_terms: D001729:Bismuth; D003442:Crowns; D003738:Dental Cements; D003799:Dental Stress Analysis; D003779:Denture Design; D004338:Drug Combinations; D004853:Epoxy Resins; D005069:Evaluation Studies as Topic; D005899:Glass Ionomer Cements; D008709:Methenamine; D011076:Polycarboxylate Cement; D011176:Post and Core Technique; D012387:Root Canal Filling Materials; D012834:Silver; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium; D015036:Zinc Phosphate Cement
chemical_list: D003738:Dental Cements; D004338:Drug Combinations; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D012387:Root Canal Filling Materials; D012834:Silver; C028044:epoxy resin AH-26; D015036:Zinc Phosphate Cement; D014025:Titanium; D008709:Methenamine; D001729:Bismuth