Clinical effectiveness of direct resin composite restorations bonded using one-step or two-step self-etch adhesive systems: A three-year multicenter study

• Published in: Dental Materials Journal Vol. 40; no. 5; pp. 1151 - 1159
• Main Authors: MASEKI, Toshio, YAMAMOTO, Takatsugu, NIKAIDO, Toru, TICHY, Antonin, SUGIZAKI, Junpei, RIKUTA, Akitomo, YOSHIKAWA, Kazushi, UNO, Shigeru, SASAZAKI, Hiromi, FUJITANI, Morioki, IKEDA, Masaomi, SHINKAI, Koichi, HANABUSA, Masao, SATOH, Kaori, MORIGAMI, Makoto, HOSAKA, Keiichi, YATANI, Hirofumi, KUBO, Shisei
• Format: Journal Article
• Language: English
• Published: Tokyo The Japanese Society for Dental Materials and Devices 25.09.2021; Japan Science and Technology Agency
• Subjects: Adhesion; Adhesives; Composite materials; Dental caries; Direct resin composite restorations; Discoloration; Hypersensitivity; Multicenter clinical study; Resins; Self-etch adhesive system
• ISSN: 0287-4547; 1881-1361; 1881-1361
• DOI: 10.4012/dmj.2020-428

The purpose of this multicenter clinical study was to compare the mid-term clinical effectiveness of direct resin composite restorations using one-step or two-step self-etch adhesives (1-SEAs or 2-SEAs). In total, 352 restorations of class I–V cavities and non-carious cervical lesions in vital teeth (1-SEAs; 52 cases, 2-SEAs; 300 cases) were placed at nine university hospitals and evaluated according to the modified USPHS criteria at baseline, and after 1, 2, and 3 years. The recall rates were 86.6% (1 year), 80.1% (2 years), and 62.2% (3 years). Two restorations failed due to fracture during the follow-up, and there was no significant difference in survival rates between 1-SEAs (97.6%) and 2-SEAs (99.4%). However, 2-SEAs exhibited significantly lower occurrences of discoloration, marginal discoloration, fracture, and plaque retention. Moreover, the subjects reported a significantly lower postoperative hypersensitivity and higher overall satisfaction at all evaluation periods if 2-SEAs were used.