Comparison of the Effect of Cetylpyridinium Chloride 0.05% and Povidone-Iodine 1%, Two Types of Mouthwash Effective Against COVID-19, on the Shear Bond Strength of Metal Orthodontic Brackets: a Laboratory Study
DOI:
https://doi.org/10.47750/pnr.2023.14.03.205Abstract
Introduction: Povidone-iodine 1% and cetylpyridinium chloride 0.05% mouthwashes have been used to remove microbial plaque and reduce gingivitis and the dysfunction of COVID-19. The present research was conducted to determine these two types of mouthwash effects on the shear bond strength of orthodontic brackets in laboratory conditions.
Method: In this experimental-laboratory research, healthy human premolar teeth were selected and preserved in 1% thymol. The samples were divided into three groups, including control and 0.05% cetylpyridinium chloride and 1% povidone-iodine mouthwashes. The shear bond strength values of the brackets were measured with a UTM device and with a blade speed of 1 mm/min After keeping each group in mouthwash and applying thermal cycles. The Adhesive Remnant Index (ARI) observed the amount of residual adhesive using a stereomicroscope at ten magnifications. The bond strength of brackets was investigated by one-way Analysis of Variance (ANOVA) in three groups, and pairwise comparisons were performed with Tukey’s test. The chi-square test also analyzed the remaining adhesive degrees in the groups.
Results: Significant differences were observed in the shear bond strength of brackets in three groups (p=0.02). The bond strength of the brackets in the povidone-iodine mouthwash group was significantly higher than the control group (p=0.01). However, in other pairwise comparisons, no significant differences were observed between the groups. There were no significant differences in the amount of residual adhesive in the different groups.
Conclusion: Immersion in mouthwashes, effective against COVID-19, had no adverse effects on metal orthodontic brackets’ shear bond strength values. Therefore, these mouthwashes can establish oral and dental hygiene and destroy COVID-19’s function in orthodontic patients.
