A novel dentin bond strength measurement technique using a composite disk in diametral compression.

ABSTRACT: New methods are needed that can predict the clinical failure of dental restorations that primarily rely on dentin bonding. Existing methods have shortcomings, e.g. severe deviation in the actual stress distribution from theory and a large standard deviation in the measured bond strength. We introduce here a novel test specimen by examining an endodontic model for dentin bonding. Specifically, we evaluated the feasibility of using the modified Brazilian disk test to measure the post-dentin interfacial bond strength. Four groups of resin composite disks which contained a slice of dentin with or without an intracanal post in the center were tested under diametral compression until fracture. Advanced nondestructive examination and imaging techniques in the form of acoustic emission (AE) and di

SUBMITTER: Huang SH 

PROVIDER: S-EPMC3417117 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature