Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Er,Cr:YSGG Laser as a Novel Method for Rebonding Failed Ceramic Brackets

Sun Jun 23 08:10:25 2024

(2016) Er,Cr:YSGG Laser as a Novel Method for Rebonding Failed Ceramic Brackets. Photomedicine and Laser Surgery. pp. 483-486. ISSN 1549-5418

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Objective: Since there is no standard method for rebonding loose ceramic brackets, the aim of this study was to evaluate the possibility of using Er,Cr:YSGG laser to eliminate the remaining composite materials from the base of ceramic brackets and to compare the bond strength of rebonded brackets with the new ones. Materials and methods: Sixty-two extracted human premolars were mounted in acrylic cylinders. Thirty-one ceramic brackets were bonded, and shear bond strength was tested using Hounsfield testing machine. The remnants of the bonding material were removed from the bases of brackets using Er,Cr:YSGG laser. These brackets were rebonded to 31 fresh teeth and again shear bond strength was measured. Pattern of debonding was assessed in both cases under a stereomicroscope and graded according to ARI index. Data were analyzed with independent t-test and Fisher's exact test. Results: Mean shear bond strength of the bond and rebond groups was 12.29 +/- 5.46 and 10.58 +/- 5.16MPa, respectively. There were no significant differences between the two groups (p=0.21). Pattern of bond failure was not statistically different between the two groups. Conclusions: Er,Cr:YSGG laser was effective in removing the remnants of bonding material from the base of ceramic brackets without any interference with the ceramic base itself, demonstrating that it might be a suitable method for rebonding ceramic brackets.

Item Type: Article
Rikhtehgaran, S.UNSPECIFIED
Keywords: shear bond strength orthodontic brackets enamel composite ablation adhesive resin Surgery
Page Range: pp. 483-486
Journal or Publication Title: Photomedicine and Laser Surgery
Journal Index: ISI
Volume: 34
Number: 10
Identification Number:
ISSN: 1549-5418
Depositing User: مهندس مهدی شریفی

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