Knowledge and awareness on novel coronavirus spread among dental fraternities in Visakhapatnam, India: A questionnaire-based survey.

Introduction: The pandemic caused by novel coronavirus (severe acute respiratory syndrome coronavirus 2) in Wuhan, China, in December 2019 is a highly contagious disease. The World Health Organization has declared the outbreak of coronavirus diseases (COVID-19) as a global public health emergency. Currently, the research on novel coronavirus is still in the primary stage.

Effect of different obturating techniques and sealers on the removal of filling materials during endodontic retreatment.

Background: Adequate removal of previous root filling materials is an important objective during endodontic retreatment.

Aim: This study was aimed to evaluate the influence of obturation quality and sealer type on the removal of root filling materials during endodontic retreatment using micro-computed tomography (μ-CT).

Materials And Methods: Ninety extracted mandibular premolars were randomly assigned to two groups ( = 45) based on the type of sealer (AH Plus and BioRoot RCS) and three sub-groups based on the obturating technique used, i.

Lockdown of colleges and universities due to COVID-19: Any impact on the educational system in India?

Pneumonia triggered by novel corona virus (SARS-CoV-2) in Wuhan, China, in December 2019 is an extremely contagious disease. The WHO has stated the outbreak of COVID-19 (corona virus) as a pandemic issue. Corona virus cases started increasing day by day in India, also from the time the first case was diagnosed on January 30, 2020.

Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin.

Context: The initial bond strength and potential durability of an adhesive restoration are significantly affected by regional variations in dentin composition.

Aim: The aim of this study is to evaluate the influence of dentin location and thermomechanical cyclic loading on microtensile bond strength of bulk-fill composite resin to coronal dentin.

Materials And Methods: Disto-occlusal cavity preparations were done on 60 extracted human mandibular molars with pulpal floor depth of 1.

Micro-computed tomographic evaluation of dentinal defects after root canal preparation with hyflex edm and vortex blue rotary systems.

Background: To evaluate the incidence of dentinal microcracks formation after root canal shaping procedures with HyFlex EDM and Vortex Blue rotary systems comparing with that of hand instrumentation using micro-computed tomography.

Material And Methods: Mandibular first molar teeth (n=60) having 50 to 200mesial root curvature were scanned using high resolution micro-CT imaging before root canal preparation to identify the presence of dentinal defects. Post-instrumentation cross-sectional images were taken and increased number and type of root defects were assessed and recorded.

Microhardness and Penetration of Artificial White Spot Lesions Treated with Resin or Colloidal Silica Infiltration.

Introduction: Infiltration of early enamel lesions by materials having remineralizing capacity seems to improve aesthetics and arrests caries progression.

Aim: To evaluate and compare the surface microhardness and penetration depth of a low viscosity resin and colloidal silica nanoparticle infiltrates into artificially created white spot lesions.

Materials And Methods: Forty extracted human central incisors were embedded in acrylic resin blocks exposing the labial surfaces of the crowns.