Shear Bond Strength and Failure Mode of Different Dental Adhesive Systems

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Noor Azlin Yahya Azizah Murtuzah Shekh

Abstract

The study aimed to evaluate the shear bond strength (SBS) and to analyse the failure mode at the resin-dentine interface of different dental adhesive systems. A total of 75 sound premolar teeth were selected and randomly assigned into five different adhesive groups (n=15): OptiBond Solo (OBS, total-etch), OptiBond Versa (OBV, two-bottles, self-etch), Adhe SE Ivoclar (ADHE, two-bottles, self-etch), G-Bond (GB, one-bottle, self-etch), and OptiBond All in One (OBO, one-bottle, self-etch). The occlusal surface of each tooth was flattened and composite resin cylinder (4x2 mm) was built up on the flat dentine surface using a custom made mould. The specimens were then subjected to 500 thermal cycles between 5 °C and 55 °C and dwell time of 20s. The SBS test was conducted using a universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed using one-way ANOVA and Dunnett T3 Test. Failure mode was determined as adhesive, cohesive or mixed mode using a stereomicroscope and the data were analyzed using Fisher's exact test. The total-etch (OBS) had significantly higher value of SBS than the two self-etch (ADHE and GB) adhesive systems. Within the self-etch systems, OBV showed significantly higher SBS value compared to ADHE and GB. There were no statistically significant differences between types of failure mode (p > 0.05) and adhesive group. It can be concluded that the different compositions in the self-etch adhesive materials may contribute to the different SBS value. The failure modes detected within all tested groups did not show clinically important differences.

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How to Cite
YAHYA, Noor Azlin; SHEKH, Azizah Murtuzah. Shear Bond Strength and Failure Mode of Different Dental Adhesive Systems. Annals of Dentistry University of Malaya, [S.l.], v. 26, p. 1-7, apr. 2019. ISSN 2462-2060. Available at: <https://adum.um.edu.my/article/view/17387>. Date accessed: 16 june 2019. doi: https://doi.org/10.22452/adum.vol26no1.
Section
Original/Research Article