Oper Dent. 2020 Sep 1;45(5):556-566. doi: 10.2341/19-165-L. ABSTRACT CLINICAL RELEVANCE: The degree of conversion of contemporary universal adhesives positively correlates with the bond strength to dentin. The correlation is more marked after thermocycling, suggesting that a high degree of conversion is required for long-term dentin bonding durability. SUMMARY: Purpose: The objectives of this study were …