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Micro‐tensile bond strength of sound and caries‐affected primary tooth dentin measured with original designed jig
Author(s) -
Hosoya Yumiko,
Kawada Eiji,
Ushigome Toshiaki,
Oda Yutaka,
GarciaGodoy Franklin
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30433
Subject(s) - dentin , molar , bond strength , materials science , ultimate tensile strength , dentistry , composite material , adhesive , orthodontics , medicine , layer (electronics)
Abstract To measure the micro‐tensile bond strength (MTBS) on sound and caries‐affected primary tooth dentin using an original designed jig that was developed for making symmetric and uniformly‐sized specimens for the micro‐tensile strength testing. The MTBS of dumbbell‐shaped specimens and matchstick‐shaped specimens were measured. Dumbbell‐shaped specimens: The occlusal surfaces of 15 sound primary molars were ground with a water‐cooled air turbine using a diamond bur. The adhesive systems and resin‐based composites were Clearfil SE Bond and Clearfil AP‐X (SE group) and Single Bond and Z250 (SB group). Matchstick‐shaped specimens: Sixteen primary molars (5 sound and 11 carious) were used. The occlusal surfaces of sound teeth were ground with a water‐cooled air turbine using a diamond bur. Infected dentin was determined by a caries detecting dye solution and removed with a round‐shaped steel bur under water‐cooling and with a hand instrument. SE was applied. Data was statistically analyzed using ANOVA and Fisher's PLSD at p < 0.05. The MTBSs (MPa) for the dumbbell‐shaped specimens were 8.9 ± 7.0 in the SE group and 10.3 ± 5.8 in the SB group and that for the matchstick‐shaped specimens were 9.0 ± 6.3 in the sound–SE group and 9.2 ± 5.8 in the carious–SE group. No significant difference was observed among them. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006