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:: Volume 32, Issue 1 And 2 (1-2020) ::
J Iran Dent Assoc 2020, 32(1 And 2): 8-11 Back to browse issues page
Microshear Bond Strength of Glass Ionomer to Primary Dentin following Surface Treatment by Bur and Er,Cr:YSGG Laser
Yasaman Rezvani1 , Majid Bargrizan2 , Mohammad Asnaashari * 3, Marzieh Gholami4 , Amir Ghasemi5 , Leila Eftekhar6
1- Assistant Professor, Department of Pediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2- Professor, Department of Pediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3- Professor, Department of Endodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran , moham-mad.asna0@gmail.com
4- Dentist, Private Practice, Isfahan, Iran
5- Professor, Department of Operative Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
6- Assistant Professor, Department of Pediatric Dentistry, Dental School, Zanjan University of Medical Sciences, Zanjan, Iran
Abstract:   (2137 Views)
Background and Aim: Er,Cr:YSGG laser irradiation has been suggested as an effective method of cavity preparation and surface treatment to enhance the bond strength. The aim of this study was to assess the microshear bond strength of Fuji II LC glass ionomer (GI) cement to primary dentin following bur preparation and Er,Cr:YSGG irradiation.
Materials and Methods: This in vitro, experimental study was conducted on 20 extracted primary canine teeth. After debris removal, the teeth were sectioned buccolingually and divided into two groups. In group 1, the exposed dentin surface was prepared by fissure bur; while in group 2, the dentin surface was subjected to Er,Cr:YSGG laser irradiation with 2 W power and 80% air and 50% water. Fuji II LC GI cement was applied. After 24 h of storage, the samples were subjected to microshear bond strength test in a microtensile tester. The bond strength values in the two groups were compared using Student t-test.
Results: The mean (± standard deviation) microshear bond strength of GI to dentin was 15.36±2.98 MPa in the laser and 4.86±1.36 MPa in the bur group. The mean mi-croshear bond strength in the laser group was significantly higher than that in the bur group (P<0.0001).
Conclusion: Irradiation of Er,Cr:YSGG laser with 2 W power increases the microshear bond strength of Fuji II LC GI to primary dentin, and is superior to bur preparation for this purpose.
Keywords: Dentin, Glass Ionomer Cements, Lasers, Tooth, Deciduous, Shear Strength, Tooth Prep-aration
Full-Text [PDF 553 kb]   (916 Downloads)    
Type of Study: Original | Subject: lasers
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Rezvani Y, Bargrizan M, Asnaashari M, Gholami M, Ghasemi A, Eftekhar L. Microshear Bond Strength of Glass Ionomer to Primary Dentin following Surface Treatment by Bur and Er,Cr:YSGG Laser. J Iran Dent Assoc 2020; 32 (1 and 2) :8-11
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Volume 32, Issue 1 And 2 (1-2020) Back to browse issues page
Journal of Iranian Dental Association

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