|
Comparison of Shear Bond Strength of Esthetic Bracket Bonded to the Ceramic Surface Using Conventional Versus Laser Etching Technique
|
M Hameed Dheyab *    , S Kadhum Al-Joubori |
| 1.Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq. , marwa.hameed1203a@codental.uobaghdad.edu.iq |
|
|
Abstract: (676 Views) |
Background and Objective: As the need for adult orthodontic treatment develops and cosmetic dentistry becomes more fashionable, orthodontists are frequently faced with the issue of bonding attachments to porcelain-restored teeth. The purpose of this study was to determine the most effective surface etching technique to obtain the optimum shear bond strength of ceramic brackets to porcelain surface without damage to the ceramic surface after debonding. Also, different methods were used on the porcelain surface to evaluate the shear bond strength.
Methods: In this study, 40 feldspathic porcelain discs were fabricated and randomly assigned to four groups (n=10). Group (1) ceramic bracket bonded to HFA-etched porcelain discs; Group (2) ceramic bracket bonded to PHA-etched porcelain discs; Group (3) ceramic bracket bonded to 3W Er, Cr: YSGG laser-conditioned porcelain discs; Group (4) ceramic bracket bonded to 6W Er, Cr: YSGG laser-conditioned porcelain discs. Extra samples from each group were selected before bonding to test the topography of the ceramic surface using Scanning Electron Microscopy (SEM). Debonding surfaces were investigated under an optical stereomicroscope.
Findings: Surface treatment conditioning methods caused significant differences in bond strength among groups (p=0.001). The highest bond strength was 22.40±1.74 MPa in the HFA-etched group, and the lowest bond strength was 11.40±2.95 MPa for 6W Er, Cr: YSGG laser-conditioned group. Among all groups, the HFA-etched group exhibited damage to porcelain surfaces on debonding.
Conclusion: According to the results of this study, the Er, Cr: YSGG laser group produced a more consistently conditioned surface treatment for bonding between orthodontic ceramic brackets and feldspathic ceramic surfaces, and minimal surface damage during debonding. Consequently, the Er, Cr: YSGG laser conditioning method is appropriate for ceramic surfaces. |
|
| Keywords: Orthodontics, Feldspathic Porcelain, Ceramic Bracket, Er, Cr: YSGG Laser. |
|
|
Full-Text [PDF 461 kb]
(155 Downloads)
|
Type of Study: Research |
Subject:
Dentistry (Radiology)
Received: 2023/04/20 | Accepted: 2023/07/26 | Published: 2024/09/22
|
|
|
|
|
|
|
| Send email to the article author |
|
|
