Products Cited in Publications Worldwide Engineering Interfacial Integrity with Hydrolytic-Resistant, Self-Reinforcing Dentin Adhesive

Engineering Interfacial Integrity with Hydrolytic-Resistant, Self-Reinforcing Dentin Adhesive

Erhan Demirel; Burak Korkmaz; Youngwoo Chang; Anil Misra; Candan Tamerler; Paulette Spencer

DOI:

Abstract

The leading cause of composite restoration failure is secondary caries, and although caries is a multifactorial problem, weak, damage-prone adhesives play a pivotal role in the high susceptibility of composite restorations to secondary caries. Our group has developed synthetic that capitalize on free-radical polymerization and sol-gel reactions to provide dental adhesives with enhanced properties. The contain γ-methacryloxypropyltrimethoxysilane (MPS) as the Sibased compound. This study investigated the properties of methacrylate-based containing methacryloxymethyltrimethoxysilane (MMeS) as a short-chain alternative. The degree of conversion (DC), polymerization kinetics, water sorption, mechanical properties, and leachates of MMeS- and MPS-resins with 55 and 30 wt% BisGMA-crosslinker were determined. The formulations were used as model adhesives, and the adhesive/dentin (a/d) interfaces were analyzed using chemometricsassisted micro-Raman spectroscopy. The properties of the 55 wt% formulations were comparable. In the 30 wt% BisGMA formulations, the MMeS-resin exhibited faster polymerization, lower DC, reduced leachates, and increased storage and loss moduli, glass transition (Tg), crosslink density, and heterogeneity. The spectroscopic results indicated a comparable spatial distribution of , mineralized, and demineralized dentin across the a/d interfaces. The hydrolytically stable experimental short-chain-silane-monomer dental adhesive provides enhanced mechanical properties through autonomous strengthening and offers a promising strategy for the development of restorative dental materials with extended service life.

Keywords

silane monomer ; sol-gel reaction ; dynamic mechanical analysis ; interface study ; short-chain monomer ; Raman spectroscopy ; dental adhesive

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A28298854586-78-697%

(Trimethoxysilyl)methyl methacrylate

20.0/1g

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