In vitro evaluation of endodontic posts.
OBJECTIVE
To compare stainless steel posts and three different fibrous posts with respect to pullout (shear) strength from extracted third molars embedded in denture acrylic.


METHODS
Post space was prepared and the posts cemented with a resin cement according to manufacturer's instructions. Single step and multi-step dentin bonding systems were also evaluated. The testing was in tension at a loading rate of 2 mm/min.


RESULTS
The statistical analysis indicated no significant difference in the pullout (shear) strength between any of the post groups tested. Also evaluated was the flexure strength of the fibrous posts before and after thermal cycling. Statistical analysis indicated a significant decrease in flexure strength for the respective fibrous posts following thermal cycling.
Drummond
J L
JL
Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, 60612-7212, USA. drummond@uic.edu
D000704:Analysis of Variance; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D002484:Cementation; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis / Q000295:instrumentation; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008964:Molar, Third; D018583:Pliability; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D012390:Root Canal Therapy; D013193:Stainless Steel / Q000737:chemistry; D013223:Statistics as Topic; D013314:Stress, Mechanical; D013499:Surface Properties; D013816:Thermodynamics
D000077482:Carbon Fiber; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D013193:Stainless Steel; D002244:Carbon