IRCT20180416039318N4 IRCT 2019-01-18 Mashhad University of Medical Sciences The effect of low level laser on postoperative sensitivity after amalgam restorations Evaluation of the treatment effect of low level laser Ga-Al-As on postoperative sensitivity after amalgam restorations 2016-01-21 anticipated 20 Complete https://irct.ir/trial/36815 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this study, patients are randomly divided into two groups, namely the Study and Control groups. Randomization is performed Based on the random numbers table obtained from www.randomizer.org, Blinding description: In the case group, laser therapy was performed . The control group was placed in the same conditions as the case group, and the machine beeps were simulated, but the laser device was silent. 2-3 postoperative sensitivity after amalgam restorations. Intervention 1: Intervention group: treated with Ga-Al-As laser (810 nm, 200 mw ) in 4 sessions with intervals of three days. Intervention 2: Control group: The control group was placed in the same conditions as the case group, and the machine beeps were simulated, but the laser device was silent. Yes - There is a plan to make this available What will be shared: Some data including demographic properties, signs and symptoms When: Two months after article publication To whom: Academic researchers Conditions: It is permitted to use the data in other studies with reference Where to obtain: mosannenp@mums.ac.ir, Dr Pegah Mosannen Mozaffari How to obtain: Sending email to authors. the authors will send data via email during 4 weeks Comments: