Evaluation of the effect of different core substrates on the accuracy of intraoral scanners.

Background: The aim of this study was to determine if different types of core substrates have any effect on the trueness and precision of digital intraoral impressions.

Material And Methods: A customized typodont with four similar cores of natural dentine, composite, metal (Ni-Cr), and zirconia in the position of premolars was fabricated. The study model was scanned five times with two types of intraoral scanners (Carestream 3600 and 3Shape Trios 3), and a reference standard scan was obtained using a laboratory scanner (3shape D1000).

Efficacy of Laser Therapy in Trigeminal Neuralgia: a Systematic Review.

Statement Of The Problem: Trigeminal neuralgia is the most common and disabling type of neuralgia in craniofacial region. Because of adverse effects of first and second lines of treatment, new modalities including laser therapy have been investigated for treatment of trigeminal neuralgia.

Purpose: The aim of this study was to review the effect of laser in trigeminal neuralgia.