Micro-tensile bond strength of sound and caries-affected primary tooth dentin measured with original designed jig
✍ Scribed by Yumiko Hosoya; Eiji Kawada; Toshiaki Ushigome; Yutaka Oda; Franklin Garcia-Godoy
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 311 KB
- Volume
- 77B
- Category
- Article
- ISSN
- 1552-4973
No coin nor oath required. For personal study only.
✦ Synopsis
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