Influence of luting strategies on dentin bond performance of self-adhesive resin luting cement in combination with a universal adhesive

• Published in: Clinical oral investigations Vol. 28; no. 9; p. 478
• Main Authors: Muto, Rei, Takamizawa, Toshiki, Shiratsuchi, Koji, Kasahara, Yuta, Suda, Shunichi, Watanabe, Hidehiko, Latta, Mark A., Miyazaki, Masashi
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 10.08.2024; Springer Nature B.V
• Subjects: Adhesives; Bond strength; Dental Bonding - methods; Dental cement; Dental Cements - chemistry; Dental Stress Analysis; Dentin; Dentin-Bonding Agents - chemistry; Dentistry; Etching; Humans; In Vitro Techniques; Light; Materials Testing; Medicine; Radiation; Resin Cements - chemistry; Resins; Shear Strength; Storage conditions; Surface Properties; Teeth; Thermal cycling; Universal adhesive; Dentin bond performance; Self-adhesive resin luting cement (SRLC); Luting strategy
• ISSN: 1436-3771; 1432-6981; 1436-3771
• DOI: 10.1007/s00784-024-05850-9

Objectives This study aimed to evaluate the dentin bond performance of various resin luting cement (RLC) systems combined with universal adhesives in different luting strategies. Materials and methods Three self-adhesive resin luting cements (SRLCs) were used with universal adhesives as primers. Twelve specimens per group were prepared to measure shear bond strength (SBS) under distinct luting strategies in etch-&-rinse and self-etch modes. Regarding luting strategies, the bonded specimens were categorized into four groups based on tooth primer application and the curing mode of the SRLC paste: (i) with light irradiation of the tooth primer (wL) + dual-cure mode (DC) of the SRLC paste, (ii) wL + self-cure mode (SC) of the SRLC paste, (iii) without light irradiation of the tooth primer (woL) + DC mode of the SRLC paste, and (iv) woL + SC mode of the SRLC paste. Specimens were also subjected to different storage conditions: 24 h in water (baseline condition) and 10,000 cycles of thermal cycling. Results Luting strategy, storage condition, and SRLC system type significantly influenced dentin SBS values in both etching modes. Notably, certain SRLCs exhibited significantly higher dentin SBS when the primer was light-irradiated compared with no primer irradiation. Conclusion Most SRLCs demonstrated higher dentin bond strength with light-irradiated primers, suggesting potential enhancement of dentin bond performance via primer light irradiation. Significance Although touch-cure polymerization can improve bond performance, its efficacy varies among SRLCs. Light irradiation of the primer and the SRLC paste might enhance the dentin bond performance of SRLCs combined with universal adhesives.