Search

Aim: To analyze the difference in the micro-tensile bond strength of specimens made with two different adhesive systems and compare them with two homogenous substrates. Materials and Methods: Sixty permanent mandibular molars were mounted in acrylic blocks and sectioned with exposed dentin surfaces. Samples were then divided into four groups. To Group-I Adper Single Bond 2 and to Group-II Adper Self-Etch plus bonding agents were applied. For Group-I and Group-II beams consisted of resin composite in the upper half and dentin in the lower half. In Group-III beams were made of only dentin. In Group-IV beams were made of only composite. Fifteen specimens of each group were taken for the micro-tensile bond strength test. Statistical Analysis: The results are analyzed using one-way analysis of variance and Critical Difference test. Results: The interface bonded with the two adhesive systems had lower micro-tensile bond strength than those of dentin and resin composite and the self-etching adhesive Adper Self-Etch plus had comparable bond strength with total-etch adhesive Adper Single Bond 2. Conclusion: The bond strength values for current adhesive systems cannot be compared to the micro-tensile bond strength of dentin and resin composite, and self-etching adhesives have comparable bond strength with total-etch adhesives. [ABSTRACT FROM AUTHOR]

The evaluation of 5th and 7th generation bonding agents on the extent of micro leakage from sealant such as fluoride in forty extracted human premolar teeth is of interest to dentists. 40 extracted teeth satisfying the inclusion and exclusion criteria were randomly divided into two groups. Group I utilized a bonding agent from the fifth generation, whereas Group II employed a bonding agent from the seventh generation, both treated with Helioseal F Plus sealant. Following a 24-hour period of cultivation at a temperature of 37°C and subjecting the sample to 100 cycles of temperature fluctuation varying in temperature from 5°C to 55°C, the samples were submerged in a 0.2% methylene blue dye mixture for duration of 24 hours and examined under a microscope. Result showed that fifth-generation agent mean microleakage was greater, but not statistically significant. The seventh-generation agent demonstrated minimal microleakage with simpler application., (© 2024 Biomedical Informatics.)