STATEMENT OF PROBLEM Endodontic access preparation through a lithium disilicate restoration is a frequently encountered clinical situation. The common practice of repairing the accessed crown with composite resin may result in a weakened restoration. PURPOSE The purpose of this in vitro study was to determine the effect of endodontic access preparation on the fracture resistance and microstru...

Objectives: The aims of this study were to test whether lightening of the overexposed radiographs improve determination of endodontic files length and whether lightened radiographs are comparable with ideally exposed radiographs. Material and Methods: Four dried human skull coated with soft tissue-equivalent wax used for exposing radiographs of the upper molars. First, the endodontic file was p...

0 NE of the prime considerations in the selection of a temporary filling material is the material’s ability to seal the margins of the cavity within which it is placed. Temporary filling materials are used in many phases of dentistry. During restorative dental procedures, temporary filling materials are used to protect the prepared tooth surface until the final restoration is placed. During end...

UNLABELLED Castor oil bean cement (COB) is a new material that has been used as an endodontic sealer, and is a candidate material for direct pulp capping. OBJECTIVE The purpose of this study was to evaluate the biocompatibility of a new formulation of COB compared to calcium hydroxide cement (CH) and a control group without any material, in the subcutaneous tissue of rats. MATERIAL AND METH...

The aim of this study was the evaluation of the long term results in the clinical applicability of two root canal sealers, Sealapex Xpress Kerr Endodontics (non-eugenol, calcium hydroxide polymeric root canal sealant) and AH Plus Jet Dentsply Maillefer (epoxy resin-based sealant). 225 teeth of 159 patients included in this study, were endodontic treated and filled with the previously mentioned ...

Endodontic treatment makes the tooth brittle due to loss of bulk of tooth structure, decrease in the moisture content of dentin and dentin elasticity. The following study was carried out to evaluate the effect of endodontic treatment on the fracture resistance of the tooth and reinforcing ability of three different core materials. The following study comprised of sample size of 30 deciduous sec...

Measurement of tooth lengths was carried out on 537 extracted human teeth. The teeth were collected from adults aged 17 years and above and preserved in formalin. The tooth lengths were obtained by taking measurements off calibrated graph paper. The lengths obtained in this study were comparable to previous data reported in the literature. However, this new data will provide useful guidelines i...

OBJECTIVE To evaluate root canal enlargement following mechanical shaping using 2 nickel titanium rotary systems. MATERIAL AND METHODS Forty single-rooted teeth were immersed in resin and sectioned perpendicular to the long axis at 4, 8, and 12 mm from the apex. Digital capture of sections was performed before and after canal instrumentation using Mtwo and BioRace instruments. The area increa...