Frequency of mechanical removal of plaque as it relates to gingival inflammation: a randomized clinical trial.

AIM: This single blind, randomized clinical trial evaluated the relationship between frequency of mechanical removal of plaque (MRP) and gingival inflammation. MATERIALS & METHODS: Fifty-two patients (maximum 5% of sites with gingival bleeding and no history of periodontitis) were randomized to different frequencies of MRP: 12, 24, 48 and 72 h. Plaque index (PlI) and gingival index (GI) were evaluated at baseline, 15 and 30 days. Intra- and inter-group differences were determined by repeated measures anova and mixed models anova, respectively, both followed by Tukey's test. RESULTS: The mean GI between baseline and 30 days remained statistically unchanged in the 12 h (0.51 ± 0.17 versus 0.63 ± 0.23, p = 0.137) and 24 h (0.43 ± 0.19 versus 0.59 ± 0.21, p = 0.052) groups, but increased significantly in the 48 h (0.48 ± 0.18 versus 0.84 ± 0.21, p = 0.001) and 72 h (0.55 ± 0.20 versus 0.94 ± 0.25, p = 0.000) groups. At 30 days, the average percentage of sites with GI scores of 1 and 2 was significantly higher in the 48 and 72 h than in the 12 and 24 h groups (p < 0.05). CONCLUSIONS: Frequencies of mechanical removal plaque up to 24 h may prevent an increase in the severity of gingival inflammation over a period of 30 days in patients with no history of periodontitis.

Supragingival plaque removal with and without dentifrice: a randomized controlled clinical trial.

The aim of this study was to compare the efficacy of dental plaque removal by brushing with and without conventional dentifrice. Twenty-four students aged 17 to 28 years participated in this randomized controlled clinical trial. Quadrants 1-3 or 2-4 were randomly allocated to the test group (brushing without dentifrice) or control group (brushing with dentifrice). After 72 h of cessation of oral hygiene, Quigley & Hein (Turesky) plaque index was assessed before and after brushing by a calibrated and blind examiner. Overtime and intergroup comparisons were performed by Student's paired sample t-test at 5% significance level. The results showed that both groups after toothbrushing presented statistically significant reductions in plaque, with no differences between them (from 3.06 ± 0.54 to 1.27 ± 0.26 versus from 3.07 ± 0.52 to 1.31 ± 0.23). A separate analysis of the buccal and lingual aspects also showed no significant differences between groups. It may be concluded that the use of a conventional dentifrice during toothbrushing does not seem to enhance plaque removal capacity.

Supragingival plaque removal with and without dentifrice: a randomized controlled clinical trial

The aim of this study was to compare the efficacy of dental plaque removal by brushing with and without conventional dentifrice. Twenty-four students aged 17 to 28 years participated in this randomized controlled clinical trial. Quadrants 1-3 or 2-4 were randomly allocated to the test group (brushing without dentifrice) or control group (brushing with dentifrice). After 72 h of cessation of oral hygiene, Quigley & Hein (Turesky) plaque index was assessed before and after brushing by a calibrated and blind examiner. Overtime and intergroup comparisons were performed by Student's paired sample t-test at 5% significance level. The results showed that both groups after toothbrushing presented statistically significant reductions in plaque, with no differences between them (from 3.06 ± 0.54 to 1.27 ± 0.26 versus from 3.07 ± 0.52 to 1.31 ± 0.23). A separate analysis of the buccal and lingual aspects also showed no significant differences between groups. It may be concluded that the use of a conventional dentifrice during toothbrushing does not seem to enhance plaque removal capacity.

O objetivo deste estudo foi comparar a eficácia de remoção mecânica da placa dental através da escovação com e sem dentifrício. Vinte e quatro estudantes com idade de 17 a 28 anos participaram deste ensaio clínico randomizado. Os quadrantes 1-3 ou 2-4 foram randomizados para alocação no grupo teste (escovação sem dentifrício) ou grupo controle (escovação com dentifrício). Após 72 h de cessação de higiene bucal, o índice de placa de Quigley & Hein (Turesky) foi avaliado antes e após a escovação por um examinador cego e calibrado. Comparações intra e intergrupo foram realizadas pelo teste t pareado, a um nível de significância de 5%. Os resultados demonstraram que, após a escovação, ambos os grupos apresentaram redução significativa de placa, porém sem diferenças intergrupos (3,06 ± 0,54 a 1,27 ± 0,26 versus 3,07 ± 0,52 a 1,31 ± 0,23). Uma análise separada das faces vestibulares e linguais também não revelou diferenças entre os grupos. Conclui-se que a utilização de dentifrícios associado ao controle mecânico parece não contribuir para a remoção da placa dental.