The change of adaptability change in adhesive systems to dentin substrte according to storage time.
10.5395/JKACD.2005.30.3.204
- Author:
Young Gon CHO
1
;
Il Hwan BAN
;
Mi Kyung YU
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea. ygcho@mail.chosun.ac.kr
- Publication Type:Original Article
- Keywords:
Microtensile bond strength;
Microscopic adaptability change;
2-step and 1-step self-etching adhesive;
Storage time
- MeSH:
Adhesives*;
Dentin*;
Humans;
Molar;
Water
- From:Journal of Korean Academy of Conservative Dentistry
2005;30(3):204-214
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
This study compared the microtensile bond strength (microTBS) and microscopic change of two 2-step and two 1-step self-etching adhesives to dentin according to storage times in distilled water. Occlusal dentin was exposed in 48 human molars. They were divided to four groups by different adhesives: SE Bond group (Clearfil SE Bond), AdheSE group (AdheSE), Adper group (Adper Prompt L-Pop), and Xeno group (Xeno III). Each group was stored in 37degrees C distilled water for 1, 15, and 30 days. Resin-bonded specimens were sectioned into beams and subjected to microTBS testing with a crosshead speed of 1 mm/minute. For SEM observation, one specimen was selected and sectioned in each group after each stroage time. Resin-dentin interface was observed under FE-SEM. In all storage times, mean microTBS of SE group was significantly higher than those of other groups (p < 0.05). There was no significant difference between mean microTBS of SE group and AdheSE group among all storage times, but significant difference between 1- and 30-day storage in mean microTBS of Adper group and Xeno group (p < 0.05). For 1-and 15-day storage, all groups showed the close adaptation between resindentin interfaces. For 30-day storage, resin-dentin interfaces showed wide gap in Adper group and separate pattern in Xeno III group.
