Year : 2023

Volume : Volume 14

Issue : Issue 6

Address for correspondence :
Dr. Sweta Gupta
swetabds@gmail.com

Abstract

Background: This in vitro study aims to evaluate the shear peel bond strength and fatigue stress of different orthodontic banding cements using 30 samples from three reputable brands: TransBond™ XT (Brand A), OrthoChoice™ (Brand B), and StrongHold™ (Brand C). Orthodontic banding is a crucial procedure in orthodontic treatment, and the choice of cement can significantly impact the longevity and stability of the bands. Materials and Methods: For this experiment, 30 metal brackets were bonded to enamel surfaces using the respective orthodontic banding cements following the manufacturer’s instructions for each brand. Ten samples were prepared for each cement type to ensure statistical significance. To assess the shear peel bond strength, a universal testing machine was employed. The brackets were subjected to a shearing force at a constant crosshead speed of 1 mm/min until bond failure occurred. The peak load at bond failure was recorded in Newtons (N) for each sample. In addition, fatigue stress tests were conducted to simulate the wear and tear experienced during the orthodontic treatment. A cyclic loading regime was applied, alternating between 5 N and 30 N for 5000 cycles at a frequency of 2 Hz. Results: The results demonstrated significant differences in shear peel bond strength among the tested orthodontic banding cements. TransBond™ XT (Brand A) exhibited the highest bond strength with an average peak load of 120 N (±5 N). OrthoChoice™ (Brand B) and StrongHold™ (Brand C) followed closely, with average peak loads of 95 N (±4 N) and 85 N (±3 N), respectively. Statistical analysis using analysis of variance and post hoc tests confirmed these differences to be significant (P < 0.05). Regarding fatigue stress, TransBond™ XT (Brand A) again outperformed the others, withstanding the cyclic loading without bond failure for all 5000 cycles. OrthoChoice™ (Brand B) showed some minor bond failure in two out of ten samples after 3000 cycles, while StrongHold™ (Brand C) experienced bond failure in four out of ten samples after 2000 cycles. Conclusion: This study highlights the significant variability in shear peel bond strength and fatigue stress among different orthodontic banding cements. TransBond™ XT (Brand A) demonstrated superior performance in both aspects, making it a favorable choice for orthodontic bonding applications. Orthodontists should consider these findings while selecting the appropriate cement for their patients to ensure durable and reliable orthodontic treatments. However, further clinical trials are necessary to corroborate these results under real-world conditions.