RESUMO
BACKGROUND: Usage of chemical mouthwashes for controlling dental caries can end to some side effects such as oral biological imbalance. Recently, using natural derivatives such as herbs, presented to overcome such adverse effects. Due to antibacterial property of olive leaf extracts (Olea europaea), this study conducted in order to evaluate bacteriocidal, anti-acid production, and anti-adhesion effects of olive leaf ethanolic, methanolic, and hydroalcoholic extracts on Streptococcus mutans. MATERIALS AND METHODS: In this in vitro study, nine strains of S. mutans (PTCC1683) were used. Maceration methods were done in order to provide the olive leaf ethanolic, methanolic, and hydroalcoholic extracts. The antibacterial activities evaluated by macrodilution and disc diffusion method in different concentrations (3.25%-100%). Acid production and adhesion of bacterial strains also were evaluated. The obtained data were analyzed by analysis of variance method using SPSS software. P < 0.05 was considered as statistically significant. RESULTS: The minimum inhibitory concentration and minimum bactericidal concentration for ethanolic, methanolic, and hydroalcoholic olive leaf extracts on S. mutans are 12%-25%, 50%-75%, and 12%-25%, respectively. In addition, inhibition zone of S. mutans significantly increased in higher concentration (ethanolic and methanolic extracts: P = 0.004; hydroalcoholic extract: P = 0.003). The acid production and adhesion significantly decreased by increase in the concentration (P < 0.001). CONCLUSION: In general, olive leaf ethanolic, methanolic, and hydroalcoholic extracts induce growth inhibition, acid production, and adhesion of S. mutans. Consequently, it can be used as a natural preservative in the food industry, as well as in the production of commercial products such as chewing gum, chocolate, and toothpaste to prevent dental caries.
RESUMO
BACKGROUND: Oral lichen planus (OLP) is a chronic disease without any definitive treatment. Local corticosteroids are often prescribed, but their efficacy has been questioned by many studies. The purpose of this study was to investigate the effect of nano-based triamcinolone acetonide gel (NT) and compare it with conventional triamcinolone gel (CT) on OLP. MATERIALS AND METHODS: In this triple-blind randomized clinical trial study, 40 patients with Erosive OLP were divided into two groups receiving (CT) and (NT). The patients were requested to apply them four times a day for 2 weeks. The severity of pain was evaluated through visual analog scale, the size of lesions was measured with paper lace, and the appearance of lesions was examined adopting Thongprasom scale . Findings will be significant via independent t-test or Chi-square test with P < 0.05. RESULTS: The severity of pain in NT group was 4.9 ± 0.7 cm before the treatment and 1.5 ± 0.9 after that, whereas in CT group, it was 4.9 ± 0.8 and 1.8 ± 0.9, respectively . The mean size of the lesions in NT group was 2.1 ± 1.1 cm before the treatment and 0.8 ± 1.1 afterward, whereas in CT group, was 2.2 ± 1.1 and 1.3 ± 1.1, respectively. The OLP appearance before and after the study in NT group was 4.5 ± 0.5 and 0.8 ± 0.6, respectively, whereas in CT group was 4.6 ± 0.5 and 0.9 ± 0.7 (P = 0.3). Among these variables, only Thongprasom scale on the 6th and 14th days had a significant reduction in NT group in comparison with CT group. CONCLUSION: NT has a better impact on OLP in comparison with CT, but this difference is not statistically significant.
RESUMO
Objective: Recurrent aphthous stomatitis (RAS) is characterized by recurring ulcers, with well-defined margins. The lesions are confined to the oral mucosa (usually seen in non-keratinized mucosa). The disease manifests in the form of outbreaks, with a chronic and self-limiting course in most cases. Since the cause of the disease is unknown, many drugs have been studied to palliate the symptoms. Treatment used is multifocal and varies according to the predisposing factors. The aim of this study was to investigate the effect of recombinant Nano-based triamcinolone acetonide gel and compare it with conventional triamcinolone gel on RAS. Material and methods: In this triple-blind randomized clinical trial study, sixty patients with minor aphthous lesions were divided into two groups receiving conventional triamcinolone (CT) and Nano-based triamcinolone (NT). The patients were requested to apply drug four times a day for a week. The severity of pain (through VAS) and the size of the lesions (mean of the largest diameter of the lesions) were evaluated on starting day and days 2, 4, 6 after the intervention. Statistical analysis was performed using chi square and independent t-test. Findings were significant with P < 0.05. Results: Of the 60 patients enrolled in the study, 5 patients did not continue; 21 (38.2%) cases were female and 34 (61.8%) cases were male (P=0.6). The severity of pain in NT group before and after the study was 1.4 ± 5.2 and 1.8 ± 1.3 cm, respectively and in CT group was 48.1 ± 1 and 1.8 ± 1.3 cm. The size of the lesions in NT group before and at the end of the study was 0.96 ± 0.1 and 0.18 ± 0.1 cm, respectively and in CT group was 0.93 ± 0.1 and 0.19 ± 0.1 cm. Among the mentioned variables, only size of lesions on the 2nd and 4th days had a significant reduction in NT group in comparison with CT group. Conclusion: The size of lesions showed a significant reduction on the 2nd and 4th days in NT group in comparison with CT group, therefore NT has a better impact on RAS in comparison with CT. (AU)
Objetivos: A estomatite aftosa recorrente (EAR) é caracterizada por úlceras recorrentes, com margens bem definidas. As lesões estão confinadas à mucosa oral (geralmente vista em mucosa não queratinizada). A doença se manifesta na forma de surtos, com um curso crônico e autolimitado na maioria dos casos. Como a causa da doença é desconhecida, muitos medicamentos foram estudados para aliviar os sintomas. O tratamento utilizado é multifocal e varia de acordo com os fatores predisponentes. O objetivo deste estudo foi investigar o efeito do gel acetonido de triancinolona recombinante baseado em Nano e compará-lo com o gel de triancinolona convencional no EAR. Material e métodos: Neste estudo clínico randomizado triplocego, sessenta pacientes com lesões aftosas menores foram divididos em dois grupos que receberam triancinolona convencional (CT) e triancinolona Nano (NT). Os pacientes foram solicitados a aplicar droga quatro vezes ao dia durante uma semana. A gravidade da dor (por meio da EVA) e o tamanho das lesões (média do maior diâmetro das lesões) foram avaliados no dia inicial e nos dias 2, 4 e 6 após a intervenção. A análise estatística foi realizada utilizando teste qui quadrado e teste t independente. Os achados foram significativos com P < 0.05. Resultados: Dos 60 pacientes incluídos no estudo, 5 pacientes não deram continuidade; 21(38,2%) casos foram mulheres e 34 (61,8%) casos foram homens (P=0,6). A gravidade da dor no grupo NT antes e depois do estudo foi de 1,4 ± 5,2 e 1,8 ± 1,3 cm. O tamanho das lesões no grupo NT antes e ao final do estudo foi de 0,96 ± 0,1 e 0,18 ± 0,1 cm, respectivamente, e no grupo de TC foi de 0,93 ± 0,1 e 0,19 ± 0,1 cm. Entre as variáveis mencionadas, somente o tamanho das lesões no segundo e quarto dias tiveram uma redução significativa no grupo NT em comparação com o grupo CT. Conclusão: O tamanho das lesões mostrou uma redução significativa nos 2º e 4º dias no grupo NT em comparação ao grupo CT, portanto o NT tem um impacto melhor no RAS em comparação com o TC. (AU)
