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      Effect of Ocimum gratissimum in Mouthrinses on De Novo Plaque Formation. A Randomized Clinical Trial

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          Abstract

          Resumo O objetivo do presente estudo foi avaliar clinicamente em humanos o efeito antiplaca de Ocimum gratissimum (Og). Quinze adultos saudáveis participaram deste estudo cruzado, duplo-cego, por meio de um modelo de acúmulo de placa parcial de 3 dias. Os voluntários aboliram qualquer método mecânico de higiene oral e foram inicialmente designados para usar os seguintes enxaguatórios bucais: água destilada (solução AD), digluconato de clorexidina a 0,12% (solução CLX) ou 10% Og (solução Og). O índice de placa (IPL) foi registrado em todos os dentes inferiores no final do experimento e os testes estatísticos Kruskal-Wallis (α=0,05) e Mann-Whitney (α=0,05) foram utilizados para estimar a diferença entre os grupos. Os resultados clínicos demonstraram diferença estatisticamente significante entre os três grupos (p<0,05), favorecendo os grupos CLX e Og; entretanto o grupo CLX foi mais efetivo que o grupo Og (p<0,05). Os enxaguatórios bucais contendo digluconato de clorexidina e Og a 10% foram capazes de reduzir a formação de nova placa bacteriana, mas Og mostrou resultados mais limitados em comparação ao digluconato de clorexidina.

          Translated abstract

          Abstract The aim of this study was to evaluate the antiplaque effect of Ocimum gratissimum (Og) by in vivo investigation. Fifteen healthy volunteers participated in a crossover, double-blind clinical study, using a 3-day partial-mouth plaque accumulation model. The participants abolished any method of mechanical oral hygiene and they were randomly assigned to initially use just the following mouthrinses: distilled water (DW solution), 0.12% chlorhexidine digluconate (CLX solution) or 10% Og (Og solution). The plaque index (PLI) was recorded in all mandibular teeth at the end of the trial and the Kruskal-Wallis (α=0.05) and Mann-Whitney (α=0.05) tests were used to estimate the difference among groups. The clinical results showed statistically significant difference among the groups (p<0.05), favoring the CLX solution and Og solution, but the first was more effective (p<0.05). The mouthrinses containing 0.12% chlorhexidine digluconate and 10% Og were able to inhibit plaque re-growth, however Og showed more limited results in comparison to CLX.

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          Farmacopeia Brasileira

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            In vitro antimicrobial activity of Ocimum americanum L. essential oil against oral microorganisms.

            The aim of the present study was to evaluate the efficacy of the essential oil of Ocimum americanum L. on in vitro activity against Streptococcus mutans, Lactobacillus casei and Candida albicans. An agar disk diffusion method was employed for screening antimicrobial activity. Minimum inhibitory concentration (MIC) and minimum cidal concentration (MCC) values of the oil against planktonic cells were determined using the Millipore membrane method. The antimicrobial potential of the essential oil was also investigated with a biofilm model. The results indicate that essential oil has antimicrobial activity against all tested microorganisms. The MIC values of the oil against the three organisms was 0.04% v/v whereas the MCC values for S. mutans, L. casei and C. albicans were 0.08%, 0.3% and 0.08% v/v, respectively. S. mutans and C. albicans were more sensitive to the essential oil than L. casei. With the biofilm assay, a 5-minute exposure to 3% v/v essential oil eliminated 3 logo10 of the tested microorganisms. At a lower concentration (0.3% v/v), a 2 log10 reduction in S. mutans and C. albicans was observed while the lactobacilli were more resistant. This finding indicates the possibility of using the essential oil of O. americanum L. in oral health care products for reducing these pathogenic microorganisms in the oral cavity.
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              The plaque inhibitory effect of a CPC mouthrinse in a 3-day plaque accumulation model - a cross-over study.

              To test the plaque inhibitory effect of an experimental 0.07% cetylpyridinium chloride (CPC) mouthrinse in a 3-day plaque accumulation model in a cross-over design.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                bdj
                Brazilian Dental Journal
                Braz. Dent. J.
                Fundação Odontológica de Ribeirão Preto
                1806-4760
                December 2016
                : 27
                : 6
                : 646-651
                Affiliations
                [1 ] Universidade de Fortaleza Brazil
                [2 ] Universidade de Fortaleza Brazil
                Article
                S0103-64402016000600646
                10.1590/0103-6440201601331
                e80fadc3-216d-4876-8d5b-4da3baceb794

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-6440&lng=en
                Categories
                DENTISTRY, ORAL SURGERY & MEDICINE

                Dentistry
                dental plaque,plant extracts,chlorhexidine,mouthrinses,prevention
                Dentistry
                dental plaque, plant extracts, chlorhexidine, mouthrinses, prevention

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