Three-year randomized controlled clinical study of a one step universal adhesive and a two-step self-etch adhesive in Class II resin composite restorations

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Purpose: To evaluate in a randomized clinical evaluation the 3-year clinical durability of a one-step universal adhesive bonding system and compare it intraindividually with a 2-step self-etch adhesive in Class II restorations. Materials and Methods: Each of 57 participants (mean age 58.3 yr) received at least two, as similar as possible, extended Class II restorations. The cavities in each of the 60 individual pairs of cavities were randomly distributed to the 1-step universal adhesive (All Bond Universal: AU) and the control 2-step self-etch adhesive (Optibond XTR: OX). A low shrinkage resin composite (Aelite LS) was used for all restorations which were evaluated using slightly modified USPHS criteria at baseline, 1 and 2 years. Results: 116 Class II restorations were evaluated at two years. Five restorations, 2 AU and 3OX, failed during the follow up, resulting in 96.5% (AU) and 94.8% (OX) success rates (p>0.05). Annual failure rates were 1.8% and 2.6%, respectively.The main reason for failure was resin composite fracture. Conclusion: Class II resin composite restorations placed with a one-step universal adhesive showed good short time effectiveness.
Original languageEnglish
JournalJournal of Adhesive Dentistry
Issue number4
Pages (from-to)287-294
Publication statusPublished - Sep 2017

ID: 170141802