INTRODUCTION Hard-tissue debris accumulation is a potential side effect of root canal instrumentation that has not been systematically investigated. In the current communication, a method to assess this debris using high-resolution microcomputed tomography (microCT) is presented. METHODS Based on prescans, mandibular molars with joining mesial root canals and isthmuses between these were sele...

Introduction: Post debonding is one of the most important causes restoration failure in endodontically treated teeth restored with fiber-post. The weakest connection post-cement-dentin complex cement-dentin bonding surface. In this study we evaluated effect etching phosphoric-acid and its duration on push-out strength self-adhesive resin cement to dentin. Materials Method: Root canal therapy wa...

The in vitro fracture toughness of human dentin has been reported to be of the order of 3 MPa (square root)m. This result, however, is based on a single study for a single orientation, and furthermore involves notched, rather than fatigue precracked, test samples. The present study seeks to obtain an improved, lower-bound, value of the toughness, and to show that previously reported values may ...

OBJECTIVES This study evaluated the effect of three antioxidizing agents on pull-out bond strengths of dentin treated with sodium hypochlorite. MATERIALS AND METHODS Root canals of 75 single-rooted human teeth were prepared. Fifteen teeth were irrigated with normal saline for a negative control group, and the remaining 60 teeth (groups 2 - 5) with 2.5% NaOCl. The teeth in group 2 served as a ...

Endodontics is a specialized discipline in dentistry that concerns the morphology, physiology, and pathology of the pulp-dentin complex, root, and peri-radicular tissues. [...].

The purpose of this study was to assess dentin removal during root canal preparation by different operators using a NSK reciprocating handpiece. Eighty-four human single-rooted mandibular premolars were hand instrumented using Triple-Flex stainless-steel files (Kerr) up to #30, weighed in analytical balance and randomly assigned to 4 groups (n=21). All specimens were mechanically prepared at th...

This study aimed to compare the push-out bond strength of a bulk-fill and conventional composite resin root dentin primary anterior teeth using 7th-generation bonding agent. in vitro evaluated 24 randomly divided into two groups: Filtek P60 resins. Single Bond Universal adhesive was used for bonding. After filling coronal part canal with resin, were mounted acrylic sliced obtain 1-mm-thick sect...

BACKGROUND/AIMS The use of cold water during toothbrushing can cause dentine sensitivity and, to avoid this painful stimulus, some patients used to rinse their mouths with warm water when brushing. Thus, the objective of this study was to determine the effect of water temperature on the dental root surface during toothbrushing. MATERIALS AND METHODS Fragments of bovine dental roots were submi...

This study compared the microshear bond strength of three resin-based sealers to root dentin and assessed whether sealer cements behave differently in thin and thick films. Extracted maxillary premolars were sectioned buccolingually, and 45 root halves were randomly allocated for microshear bond testing with the three resin sealers in thin and thick films. The microshear bond strength was then ...

introduction: various methods commonly used for cleaning and shaping root canals have not been successful in completely eradicating bacteria due to anatomic complexity and root canals irregularities. disinfecting the canals with intracanal irrigants in addition to proper cleaning and shaping can produce a successful outcome. antimicrobials with sustained antibacterial activity would be desirabl...