Shear Bond Strength and Failure Mode of Different Dental Adhesive Systems
- Author:
Azizah Murtuzah Shekh
1
;
Noor Azlin Yahya
Author Information
1. Faculty of Dentistry, University of Malaya, Kuala Lumpur
- Publication Type:Journal Article
- Keywords:
Dental adhesive;
Dental composite;
Total-etch bonding system;
Self-etch bonding system;
Shear bond
- From:
Annals of Dentistry
2019;26(1):1-7
- CountryMalaysia
- Language:English
-
Abstract:
The study aimed to evaluate the shear bond strength (SBS) and to analyse the failure mode at the resindentine 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, selfetch), 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
- Full text:9.2019my0117.pdf
