Resumo

SANTOS GUSMAO, Estela et al. Control mecánico - químico de la placa supragingival con diferentes concentraciones de clorhexidina. Acta odontol. venez [online]. 2009, vol.47, n.1, pp.46-53. ISSN 0001-6365.

The aim of the present study was to evaluate the effectiveness of Chlorhexidine in reducing supragingival biofilm index, This study compared two different concentrations of Chlorhexidine associated with tooth brushing (experimental groups), and tooth brushing without any mouthrinse (control group). 75 patients, both sexes, participated in this study, aged 17 to 65 years, periodontally healthy, with no plaque retaining factor, and no systemic diseases. The dental biofilm was quantified by using the Oral Hygiene Index Simplified - OHI-S (Debris Index) and its percentages were recorded in two moments (initial and final), in a week interval. The sample was divided into three groups, each one with 25 patients: group I: toothbrushing without any mouthrinse; Group II: toothbrushing associated with manipulated chlorhexidine mouthrinse (0.12%); Group III: toothbrushing associated with commercial chlorhexidine mouthrinse (0.2%). Results showed a significant reduction (p<0.05) between initial and final indices in all groups analyzed - no matter the treatment adopted; comparing the groups, the data indicated a significant difference between group III (p<0.05) and groups I and II; when analyzing sex variable, specifically men data, it was found significant association between groups II and III; when comparing groups I, II and III in relation to the variable age, results showed a significant difference in individuals aged 17 to 29 years, between groups I and III. Finally, data showed that all kinds of treatments proposed in this research were successful and significant in the reduction of the supragingival biofilm index, specially for group III, which used toothbrushing associated to manipulated chlorhexidine mouthrinse (0.2%).

Palavras-chave : Chlorhexidine; Dental Plaque; Toothbrushing.