Evaluation of the time needed for the debonding of two ceramic materials at two thicknesses using two laser powers of Erbium Chromium: YSGG Laser “A Comparative In-Vitro Study” | ||
| Journal of Fundamental and Clinical Research | ||
| Article 4, Volume 2, Issue 1, June 2022, Pages 43-55 PDF (550.78 K) | ||
| Document Type: Original research articles | ||
| DOI: 10.21608/jfcr.2022.245559 | ||
| Authors | ||
| Reham Abuosa* 1; Lamia Sayed Kheiralla2; Rana Mahmoud Sherif2 | ||
| 1Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt. | ||
| 2Fixed Prosthodontics Department, Faculty of Dentistry, Cairo University, Cairo, Egypt. | ||
| Abstract | ||
| Background: Ceramic veneers are a very satisfying treatment option for patients regarding aesthetics as they have highly favorable clinical performance. Nevertheless, the de-bonding of laminate veneers may be needed. The conventional techniques for debonding have been proven destructive. The introduction of laser has been of great help offering an easier and a safer debonding technique. Objectives: to evaluate the time needed for debonding and the transmission energy ratio through different ceramic materials in two different thicknesses using two different laser powers. Materials and methods: Fifty-six ceramic specimens were divided into two main groups (n= 28/group) according to ceramic materials (feldspathic, hybrid ceramic). Then each group was further subdivided into two subgroups (n= 14/subgroup) according to their thicknesses (0.3mm -0.7mm). Each group was subjected to two laser powers (3 watt and 6 watt). Transmission energy was first measured followed by the debonding procedure and then time was recorded. Data obtained was analyzed using three-way (ANOVA) (P ≤ 0.05) then Bonferroni’s post-hoc test. Results: low power laser showed statistically significant higher mean debonding time than high power (P-value <0.001, Effect size = 0.370). Vita Enamic showed statistically significant higher mean transmission energy than Vita Mark II (P-value <0.001, Effect size = 0.544). 0.3 mm thickness showed statistically significant higher mean transmission energy than 0.7 mm thickness (P-value <0.001, Effect size = 0.325). Conclusion: Laser use in debonding was proven to be a much easier technique in less time rendering both the ceramic and tooth structure intact. Keywords: debonding, Er, Cr: YSGG laser, feldspathic ceramic, hybrid ceramic. | ||
| Keywords | ||
| debonding; Er; Cr: YSGG laser; feldspathic ceramic; hybrid ceramic | ||
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