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Comparison between shear forces applied on the overlay-dental tissue interface using different bonding techniques: An
Thomas Reboul1, H A Hoang Thaï1, Sibel Cetik2
1Department of Stomatology and Dentistry, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium.
Journal of Indian Prosthodontic Society
|August 17, 2018
Summary
Immediate dentin sealing (IDS) with Panavia V5 significantly improved glass-ceramic overlay adhesion to tooth structure under shear forces. This bonding technique offers superior resistance compared to other methods.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Glass-ceramic restorations are widely used for dental applications.
- Ensuring strong adhesion between these restorations and tooth structure is crucial for longevity.
- Various bonding systems and techniques exist, each with potential impacts on bond strength.
Purpose of the Study:
- To compare the shear bond strength of glass-ceramic overlays bonded to tooth structure using different systems.
- To evaluate the effect of immediate dentin sealing (IDS) on adhesion.
- To determine the optimal bonding strategy for glass-ceramic restorations.
Main Methods:
- Glass-ceramic overlays (Suprinity, Vita) were bonded to third molars using Panavia V5 with and without IDS, and a heated composite with IDS.
- Thirty teeth were divided into three groups (n=10) for each bonding condition.
- Shear forces were applied using a universal testing machine to measure bond resistance.
Main Results:
- The mean fracture resistance was highest for Panavia V5 with IDS (15.74 ± 2.13 MPa), followed by Panavia V5 without IDS (12.08 ± 1.41 MPa), and heated composite with IDS (8.33 ± 2.85 MPa).
- Statistical analysis revealed significant differences between the groups (P < 0.001).
- Panavia V5 with IDS demonstrated superior bond strength.
Conclusions:
- Bonding glass-ceramic overlays with Panavia V5 combined with immediate dentin sealing (IDS) provides significantly higher resistance to shear forces.
- The incorporation of IDS enhances the overall adhesion of the bonding system.
- This technique represents a more robust method for securing glass-ceramic dental restorations.
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