Comparative evaluation of shear bond strength of sixth- and seventh-generation bonding agents with varying pH - An study.

Introduction: To compare and evaluate the shear bond strength of sixth- and seventh-generation bonding agents with varying pH - an study.

Materials And Methods: Eighty extracted human premolar teeth were collected and cleaned and polished with pumice and water. The root portion of teeth was resected, and only the coronal portion was embedded in the cold-cure acrylic resin.

Accuracy of two electronic apex locators in locating root perforations in curved canals in dry and wet conditions: A comparative study.

Background: The aim of the study was to evaluate the accuracy of iPex and Vdw gold apex locators in detecting simulated root perforations in curved canals in the presence of 3% sodium hypochlorite (NaOCl) and 2% chlorhexidine (CHX).

Materials And Methods: In this comparative study Twenty mandibular molars with curved mesial roots were selected and perforation was made in the danger zone 4 mm from the furcation area. The actual length of the perforation site was measured using stereomicroscope software using a #15 K file, following which the teeth were embedded in alginate molds.