Effect of light-, chemical-, and dual-cured universal adhesives on the internal adaptation of resin composites to pulpal and gingival internal walls.
| Autor: | Ismail HS; Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, hoda_saleh@mans.edu.eg., Elawsya ME; Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt., Ali AI; Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt. |
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| Jazyk: | angličtina |
| Zdroj: | American journal of dentistry [Am J Dent] 2024 Apr; Vol. 37 (2), pp. 91-100. |
| Abstrakt: | Purpose: To compare the internal adaptation of restorative systems bonded to mid-coronal and gingival dentin using light-cured, chemical-cured, and dual-cured adhesives, both immediately and after aging. Methods: 60 molars were selected and received occluso-mesial preparations with dentin gingival margins. Restorations were performed using different restorative systems with light-cured, chemical-cured, and dual-cured adhesives. Internal adaptation was assessed by examining the percentage of continuous margin (%CM) at the pulpal and gingival dentin under a scanning electron microscope at x200 magnification. Half of the teeth were stored in sterile water for 24 hours, while the other half underwent 10,000 thermal cycles. Micro-morphological analysis was conducted on representative samples at x1,000 magnification. Results: The restorative system with light-cured adhesive exhibited significantly lower %CM values at the gingival dentin, particularly after aging. Aging had a negative impact on the %CM values of the pulpal and gingival dentin in restorative systems with light-cured and dual-cured adhesives. Regional dentin variations influenced the %CM values, especially after aging, regardless of the restorative system used. The tested restorative system with chemical-cured adhesive is preferable for achieving improved internal adaptation when bonding to both mid-coronal and gingival dentin, compared to the other tested systems. Clinical Significance: The study highlights the variations in adhesive performance between different regional dentin areas using the tested restorative systems. Competing Interests: The authors declared no conflict of interest. (Copyright©American Journal of Dentistry.) |
| Databáze: | MEDLINE |
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