Publication: The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin
The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin
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10.1186/s12903-023-02721-9
Date
2023-01-12
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Article
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Springer Nature
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https://bmcoralhealth.biomedcentral.com/articles/10.1186/s12903-023-02721-9
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Abstract
Objectives: Evaluating the bond strength of two ceramic materials to dentin after Er,Cr:YSGG laser debonding. Would laser debonding affect the bond strength of ceramic to dentin? Materials and methods: Recently extracted human molars were ground to expose dentin. Forty square shaped samples were prepared from CAD/CAM ceramic blocks. Samples were divided into two groups according to the type of ceramic material; group E: Lithium disilicate and group T: Ultra-translucent Zirconia (n = 20) Each group was divided into two subgroups (n = 10) according to the laser debonding effect (subgroup B: bonded samples, subgroup R: re-bonded samples after laser debonding). Ceramic samples were bonded to dentin using dual cure self-adhesive resin cement. Laser debonding of ceramic samples of subgroups R using Er, Cr:YSGG laser, were then re-bonded again to dentin surface with same resin cement. The Shear bond strength test using Universal testing machine was done. The failure mode was analyzed. Two-way analysis of variance was used to compare the mean bond strength and re-bond strength of two materials. The significance level was set at ≤ 0.05.
Results: Two-Way ANOVA showed that ceramic type had a significant effect on the re-bond strength to dentin. The predominant failure mode was adhesive. Conclusions: Laser debonding of Lithium disilicate and Ultra translucent Zirconia decreased the re-bond strength to dentin. Deterioration in re-bond strength for Lithium disilicate ceramics was more pronounced than for Ultra translucent Zirconia. Clinical Relevance Deterioration in the bond strength between ceramics & dentin after laser debonding still needs improvement to allow its clinical use.
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Keywords
Laser debonding, Resin cement, Shear bond strength, Er,Cr:YSGG laser, Ceramics
Citation
Abdel Sadek, H.M., Abdel Khalek, A.M. & Wahsh, M.M. The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin. BMC Oral Health 23, 17 (2023). https://doi.org/10.1186/s12903-023-02721-9
Journal Title
BMC Oral Health
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Volume
23
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1
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© 2023 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.