Soshi Suzuki1, Toshiki Takamizawa2, Arisa Imai1, Akimasa Tsujimoto1, Keiichi Sai1, Masayuki Takimoto1, Wayne W Barkmeier3, Mark A Latta3, Masashi Miyazaki1. 1. Department of Operative Dentistry, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan. 2. Department of Operative Dentistry, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan. takamizawa.toshiki@nihon-u.ac.jp. 3. Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
Abstract
OBJECTIVES: The purpose of this study was to examine the enamel bond durability of universal adhesives in the self-etch mode under 2-year water storage and thermal cycling conditions. MATERIALS AND METHODS: Three commercially available universal adhesives and a gold standard two-step self-etch adhesive were used. Ten specimens of bovine enamel were prepared per test group, and shear bond strength (SBS) was measured to determine the bonding durability after thermal cycling (TC) or long-term water storage (WS). The bonded specimens were divided into three groups: (1) specimens subjected to TC, where the bonded specimens were stored in 37 °C distilled water for 24 h before being subjected to 3000, 10,000, 20,000 or 30,000 TC; (2) specimens stored in 37 °C distilled water for 3 months, 6 months, 1 year or 2 year; and (3) specimens stored in 37 °C distilled water for 24 h, serving as a baseline. RESULTS: The two-step self-etch adhesive showed significantly higher SBS than the universal adhesives tested, regardless of the type of degradation method. All universal adhesives showed no significant enamel SBS reductions in TC and WS, when compared to baseline and the other degradation conditions. CONCLUSIONS: Compared to the bond strengths obtained with the two-step self-etch adhesive, significantly lower bond strengths were obtained with universal adhesives. However, the enamel bond durability of universal adhesives was relatively stable under both degradation conditions tested. CLINICAL RELEVANCE: The present data indicate that the enamel bond durability of universal adhesives in the self-etch mode might be sufficient for clinical use.
OBJECTIVES: The purpose of this study was to examine the enamel bond durability of universal adhesives in the self-etch mode under 2-year water storage and thermal cycling conditions. MATERIALS AND METHODS: Three commercially available universal adhesives and a gold standard two-step self-etch adhesive were used. Ten specimens of bovine enamel were prepared per test group, and shear bond strength (SBS) was measured to determine the bonding durability after thermal cycling (TC) or long-term water storage (WS). The bonded specimens were divided into three groups: (1) specimens subjected to TC, where the bonded specimens were stored in 37 °C distilled water for 24 h before being subjected to 3000, 10,000, 20,000 or 30,000 TC; (2) specimens stored in 37 °C distilled water for 3 months, 6 months, 1 year or 2 year; and (3) specimens stored in 37 °C distilled water for 24 h, serving as a baseline. RESULTS: The two-step self-etch adhesive showed significantly higher SBS than the universal adhesives tested, regardless of the type of degradation method. All universal adhesives showed no significant enamel SBS reductions in TC and WS, when compared to baseline and the other degradation conditions. CONCLUSIONS: Compared to the bond strengths obtained with the two-step self-etch adhesive, significantly lower bond strengths were obtained with universal adhesives. However, the enamel bond durability of universal adhesives was relatively stable under both degradation conditions tested. CLINICAL RELEVANCE: The present data indicate that the enamel bond durability of universal adhesives in the self-etch mode might be sufficient for clinical use.
Entities:
Keywords:
Bonding durability; Thermal cycling; Two-year water storage; Universal adhesive
Authors: Kirsten L Van Landuyt; Johan Snauwaert; Jan De Munck; Marleen Peumans; Yasuhiro Yoshida; André Poitevin; Eduardo Coutinho; Kazuomi Suzuki; Paul Lambrechts; Bart Van Meerbeek Journal: Biomaterials Date: 2007-05-07 Impact factor: 12.479
Authors: T Suzuki; T Takamizawa; W W Barkmeier; A Tsujimoto; H Endo; R L Erickson; M A Latta; M Miyazaki Journal: Oper Dent Date: 2016-06-28 Impact factor: 2.440