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Push-Out Bond Strength of Two Calcium Silicate–Based Cements Used for Repair of Artificial Furcal Perforation Following Different Power Outputs of Nd:Yag Laser Publisher Pubmed



Sheykhrezae MS1 ; Sohrabi K2 ; Khosraviani F3 ; Mohammadi S1 ; Chiniforush N1, 4 ; Sarraf P5
Authors
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Authors Affiliations
  1. 1. School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Endodontist, Private Practice, Tehran, Iran
  3. 3. D.D.S, University of California Los Angeles, School of Dentistry, Los Angeles, CA, United States
  4. 4. Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Laser Research Center of Dentistry, Dentistry Research Institute, Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Source: Lasers in Medical Science Published:2022


Abstract

Proper bond strength of endodontic materials is an essential factor in the final success of root canal treatments, including perforation repairs. This study was designed to evaluate the effect of two power outputs of Nd:YAG laser (1064 nm) on push-out bond strength (PBS) of ProRoot mineral trioxide aggregate (MTA) and calcium-enriched mixture cement (CEM Cement) in the repair of artificial furcal perforations. This ex vivo study enrolled 66 extracted human molars. After preparing the access cavity, perforations were created on the floor of the pulp chamber with a diameter of 1.4 mm. The teeth were randomly distributed into the following six groups according to the repair material (MTA and CEM) and power output of laser irradiation (1 W and 1.5 W); A: MTA (case), B: CEM (case), C: Nd:YAG (1 W)/MTA, D: Nd:YAG (1 W)/CEM, E: Nd:YAG (1.5 W)/MTA, and F: Nd:YAG (1.5 W)/CEM. Then, a universal testing machine was utilized to assess the PBS. Data analysis was performed using ANOVA and T tests. Significant level was considered at P < 0.05. The highest mean ± SD of PBS was noted in Group Nd:YAG (1 W)/MTA (58.92 ± 36.13), followed by Nd:YAG (1.5 W)/MTA > Nd:YAG (1.5 W)/CEM > Nd:YAG (1 W)/CEM > MTA > and CEM. A significant difference was noted between laser and non-laser applications (P < 0.05). However, the increase of power output from 1 to 1.5 W had no significant influence on PBS (P > 0.05). The PBS of MTA groups was always significantly greater than that of CEM groups (P < 0.05). Although Nd:YAG laser irradiation positively influenced on PBS values in both material studied, increasing power output was not effective. © 2022, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.
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