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Submitted: 29 May 2021
Revision: 05 Sep 2021
Accepted: 05 Sep 2021
ePublished: 29 Mar 2022
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Avicenna J Dent Res. 2022;14(1): 20-24.
doi: 10.34172/ajdr.2022.04
  Abstract View: 775
  PDF Download: 456

Original Article

In Vitro Effect of Strontium-Doped 45S5 Bioglass and Nd:YAG Laser on Microhardness of Demineralized Enamel

Bahareh Asgartooran 1*, Erfan Akbari 2, Loghman Rezaei-Soufi 1, Roya Najafi-Vosough 3

1 Department of Restorative Dentistry, Dental School, Hamedan University of Medical Sciences, Hamedan, Iran
2 Dentist
3 Department of Biostatistics and Epidemiology, School of Public Health, Hamedan University of Medical Sciences, Hamedan, Iran
*Corresponding Author: Corresponding author: Bahareh Asgartooran, Assistant Professor, Dental School of Hamedan University of Medical Sciences, Besat Boulevard, Hamadan, Iran, 65176-59114, Tel:+98-8138381086, Email: , Email: basgartooran@yahoo.com

Abstract

Background: This study aimed to assess the effect of strontium-doped 45S5 bioglass (BG) and Nd:YAG laser on the microhardness of demineralized enamel.

Materials and Methods: In this in vitro, experimental study, 65 sound enamel samples were prepared of human premolars and polished, and then immersed in a demineralizing solution for 10 weeks. The samples were randomly divided into 5 groups of control, BG, laser, laser plus BG, and BG plus laser. Two samples of each group underwent assessment of surface morphology under a scanning electron microscope. Finally, the microhardness of samples was measured using a Vickers hardness tester, and data were analyzed by ANOVA.

Results: The mean microhardness of the BG group was significantly higher than that of other groups (P<0.05). The lowest microhardness was noted in the control group. The difference in microhardness was significant between laser and laser plus BG groups (P<0.05). Further, the BG plus laser group had a significant difference in microhardness with BG and control groups (P<0.05). The difference between laser plus BG and control groups was also significant in this respect (P<0.05). Eventually, maximum morphological changes were observed in the BG group.

Conclusions: Overall, BG seems to be effective for the treatment of incipient enamel caries. It effectively increases enamel microhardness and decreases mineral loss while preserving the integrity of the enamel surface.


Please cite this article as follows: Asgartooran B, Akbari E, Rezaei-Soufi L, Najafi-Vosough R. In vitro effect of strontium-doped 45s5 bioglass and nd:yag laser on microhardness of demineralized enamel. Avicenna J Dent Res. 2022; 14(1):20-24. doi:10.34172/ajdr.2022.04
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