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:: Volume 30, Issue 2 (4-2018) ::
J Iran Dent Assoc 2018, 30(2): 66-72 Back to browse issues page
Effect of Combined Application of Er,Cr:YSGG and Sodium Fluo-ride Varnish in Prevention of Demineralization of Primary Tooth Enamel: an In Vitro Study
Samaneh Razeghi1 , Sara Ghadimi * 2, Reza Fekrazad3 , Mojtaba Namdar4
1- Assistant Professor, Research Center for Caries Prevention, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran AND Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2- Associate Professor, Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Teh-ran, Iran AND Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran , sghadimi@tums.ac.ir
3- Professor ,Department of Periodontology, School of Dentistry- Laser Research Center in Medical Sciences, AJA University of Medical Sciences, Tehran, Iran AND International Network for Photo Medicine and Photo Dynamic Therapy (INPMPDT), Universal Scientific Education and Research Network (USERN), Tehran, Iran
4- Dentist, Private Office, Tehran, Iran
Abstract:   (3583 Views)
Background and Aim: Previous studies revealed improved enamel caries resistance after laser irradiation. Present in vitro study evaluated the effect of Er,Cr:YSGG laser with or without topical fluoride application on microhardness of primary enamel after artificial demineralization.
Materials and Methods: In this in vitro study, 35 primary molars with sound surfaces were bisected and randomly divided into seven groups of 10 specimens. In group F, 5% sodium fluoride varnish was applied while in group L1 and L2, Er,Cr:YSGG laser with the energy level of 0.25 W and 0.5 W was used, respectively. In group F/L1 and F/L2, application of fluoride varnish was followed by utilizing the Er,Cr:YSGG laser with the energy level of 0.25 W and 0.5 W respectively. Whereas, in groups L1/F and L2/F, the order of fluoride varnish and laser was reversed. After treatment, specimens were kept in distilled water for 24 h followed by a pH-cycling. Microhardness of each specimen was measured before treatment and after pH-cycling. The Analysis of Covariance (ANCOVA) was used for statistical analysis.
Results: The impact of different treatments on the microhardness value was not significant among the tested groups (P=0.89).
Conclusion: Our findings revealed that combination of Er,Cr:YSGG laser irradiation and application of topical fluoride have no superiority over either laser irradiation or fluoride application alone in increasing microhardness of primary teeth enamel, regardless of order of treatments or laser power.
Keywords: Lasers, Sodium Fluoride, Hardness, Tooth, Deciduous
Full-Text [PDF 272 kb]   (1319 Downloads)    
Type of Study: Original | Subject: Pediatric Dentistry
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Razeghi S, Ghadimi S, Fekrazad R, Namdar M. Effect of Combined Application of Er,Cr:YSGG and Sodium Fluo-ride Varnish in Prevention of Demineralization of Primary Tooth Enamel: an In Vitro Study. J Iran Dent Assoc 2018; 30 (2) :66-72
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Volume 30, Issue 2 (4-2018) Back to browse issues page
Journal of Iranian Dental Association

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