This study was carried out to determine the effects of nerve resection and cavity preparation with restoration (CPR) on the formation of response dentine in continually developing rabbit incisor teeth. Resections of the inferior alveolar nerve (IAN) and/or the superior cervical ganglion (SCG) were performed on the right side of 42 adult New Zealand rabbits. Fifteen days were allowed for neural ...

OBJECTIVE To analyze possible correlations among tubular dentine cement penetration, adhesiveness and apical leakage in fillings performed with gutta percha and an endodontic cement based on epoxy amine resin. MATERIAL AND METHODS Sixty similar, extracted human mandibular central incisors were irrigated, instrumented and filled following the same protocol. First, apical leakage was quantified...

BACKGROUND Adhesive systems are constantly subjected to mechanical and chemical stresses that negatively impact the integrity and durability of the dentine-adhesive interface. Despite the lack of evidence to support or reject the clinical indication for mechanical retention, the potential further contribution of these preparations to the behavior of the composite resin-sound dentine bond has be...

OBJECTIVES Search in PubMed with keywords "enzymes, dentinogenesis, and dental caries" revealed only 4 items, but when combined with "enzymes, osteogenesis, and osteoporosis" as high as 404 items resulted. Dental caries was associated with an order of magnitude fewer studies than the chronic bone disease, osteoporosis. This observation motivated this review. MATERIAL AND METHODS A comprehensi...

introduction: the aim of this study was to compare the dentine removing efficacy of gates-glidden drills with hand files, protaper and oneshape single-instrument system using cone-beam computed tomography (cbct). methods and materials: a total of 39 extracted bifurcated maxillary first premolars were divided into 3 groups ( n =13) and were prepared using either gates-glidden drills and hand ins...

In the present research, nanoindentation, atomic-force microscopy and optical were used to study mechanical microgeometrical parameters of tooth tissues. A nanoindentation test unit equipped with Berkovich indenter was determine values reduced Young’s modulus indentation hardness both atomic force using a diamond probe on silicon cantilever human root cementum. Three areas cementum studied: cer...

BACKGROUND/AIMS Mechanical removal of carious dentine based on perceived hardness is subjective and tends to be excessively destructive; chemo-mechanical techniques have been proposed as being more objective and conservative. The aims of the present study are to use X-ray microtomography (XMT/micro-CT) to determine the three-dimensional mineral concentration distribution in sound, carious and e...

This study compared dentine demineralization induced by in vitro and in situ models, and correlated dentine surface hardness (SH), cross-sectional hardness (CSH) and mineral content by transverse microradiography (TMR). Bovine dentine specimens (n = 15/group) were demineralized in vitro with the following: MC gel (6% carboxymethylcellulose gel and 0.1 M lactic acid, pH 5.0, 14 days); buffer I (...

OBJECTIVE The aim of this study was to evaluate the cytotoxicity of three dentine bonding agents (G-Bond, Clearfil S(3) Bond and Clearfil SE Bond X) in cell-culture perfusion. METHODS In this experiment, 8×10(4) TCPC SV40 cells (bovine-pulp-derived cells transfected with simian virus 40 large T-antigen) in MEM-alpha media, 20%FCS were seeded on mesh in a 6-well plate and incubated at 37 °C wi...

• Fluorescence readings of E. faecalis infected human dentine sections were quenched when treated with oxidizing irrigants. returned to baseline in 24 h. The fluorescence quenching effects agents need be considered using laser as a diagnostic tool assessing the quality root canal debridement or disinfection. This study aimed assess changes characteristics Enterococcus over period h following tr...