فهرست مطالب negin eslami amirabadi

In recent years, the use of herbal oral care products has been taken into consideration for reducing dental plaque accumulation. Propolis has been widely used in medicine due to its multiple biological properties. The aim of this study was to evaluate the antiplaque efficacy of an herbal toothpaste containing propolis in comparison with a control group.

This single-blind parallel clinical trial was conducted among 60 dental students. The baseline plaque index was evaluated using a plaque in-dicator one hour after brushing without toothpaste. Participants were randomly as-signed to two groups: (A) herbal toothpaste with propolis, and (B) herbal toothpaste without propolis. After four weeks, the plaque index was re-examined and recorded. Quantitative variables were analyzed by independent t-test, and the mean and standard deviation (SD) were reported. P<0.05 was considered statistically significant.

The mean plaque index differences were not significant between the two groups at the beginning of the study, while there was a significant difference after four weeks (P˂0.001). The results signify an approximate 1.7-unit reduction in the mean plaque index of subjects using toothpaste with propolis in comparison with a 0.7-unit reduction in subjects using toothpaste without propolis.

The herbal toothpaste containing propolis was more effective in reducing plaque accumulation in comparison with the control group. Considering the effect of propolis-containing toothpastes on the reduction of dental plaque accumulation, these can be used as an effective oral hygiene product.

Since fluoride therapy is usually the first step of treatment in pediatric dentistry and it may interfere with other treatments, such as composite fill-ing, this study aimed to evaluate the possible effects of topical pre-fluoride therapy on marginal microleakage of composite restorations in deciduous teeth. In this in-vitro study, 30 deciduous canines were randomly allocated to five groups: 1.23% acidulated phosphate fluoride (APF) gel was used in two groups, while 2% sodium fluoride (NaF) gel was used in the other two groups. Thirty minutes and two weeks after fluoride therapy, Class V cavities were prepared and restored using composite resins. After thermocycling, the teeth were soaked in 0.5% fuchsine solution and were sagittally sectioned in half. The extension of dye penetration into the occlusal and gingival walls was investigated un-der a stereomicroscope at ×30 magnification and scored using a 0-3 scoring system. Data were analyzed using Kruskal-Wallis and Wilcoxon signed-rank tests. Marginal microleakage was neither affected in enamel walls (P=0.213) nor in dentinal walls (P=0.851). The scores of microleakage in enamel walls were lower than that in dentinal walls, and this difference was statistically significant (P<0.05). Topical fluoride therapy using 1.23% APF or 2% NaF gel before the placement of composite resin restorations has no negative effect on marginal microleakage.