Antiplaque and antigingivitis effect of Lippia Sidoides: a double-blind clinical study in humans

OBJECTIVES: The antiplaque and antigingivitis effect of Lippia Sidoides (LS) was evaluated in this in vivo investigation. MATERIAL AND METHODS: Twenty-three subjects participated in a cross-over, double-blind clinical study, using 21-day partial-mouth experimental model of gingivitis. A toothshield was constructed for each volunteer, avoiding the brushing of the 4 experimental posterior teeth in the lower left quadrant. The subjects were randomly assigned initially to use either the placebo gel (control group) or the test gel, containing 10 percent LS (test group). RESULTS: The clinical results showed statistically significant differences for plaque index (PLI) (p<0.01) between days 0 and 21 in both groups, however only the control group showed statistically significant difference (p<0.01) for the bleeding (IB) and gingival (GI) index within the experimental period of 21 days. On day 21, the test group presented significantly better results than the control group with regard to the GI (p<0.05). CONCLUSIONS: The test gel containing 10 percent LS was effective in the control of gingivitis.

Comparative analysis of the effect of two chlorhexidine mouthrinses on plaque accumulation and gingival bleeding

The aim of the present study was to evaluate the effect of two chlorhexidine rinsing solutions (0.12 percent and 0.2 percent) on plaque and gingival bleeding. Ten dental students participated in this double-blind, cross-over study, rinsing twice a day, for one minute, with each one of the tested solutions for fourteen days. A wash-out period of one week between treatments was observed. In order to assess gingival bleeding, the van der Weijden et al.¹ (1994) index was used. The plaque indexes used were those of Quigley, Hein² (1962) and Silness, Löe³ (1964). In the pre-experimental period, subjects received oral hygiene instructions and dental prophylaxis. The results revealed no significant differences between both concentrations in relation to plaque and gingival bleeding. Mean values (± standard deviation) of the Quigley & Hein index were 0.25 ± 0.16 for the 0.12 percent solution and 0.23 ± 0.26 for the 0.2 percent solution (p = 0.4838). Mean values (± standard deviation) of the Silness-Löe index were 0.12 ± 0.10 for the 0.12 percent solution and 0.11 ± 0.11 for the 0.2 percent solution (p = 0.7592). The bleeding index mean values at the end of the study were not different for both concentrations with mean values (± standard deviation) of 14.93 percent ± 6.68 percent and 13.95 ± 9.24 percent for the 0.12 percent and 0.2 percent solutions, respectively. Although an increase in gingival bleeding was observed, both concentrations were able to control dental plaque.

Clinical evaluation of an ionic tooth brush on oral hygiene status, gingival status, and microbial parameter.

It has long been recognised that the presence of dental plaque leads to gingivitis and periodontal disease, as well as dental caries. Today tooth brushing is the most widely accepted method of removing plaque. Hence this present clinical study was undertaken to evaluate the effectiveness of an ionic toothbrush on oral hygiene status. For this study, 20 dental students in the age group of 18-20 years were included. All the subjects after undergoing dental prophylaxis were then provided with ionic toothbrushes, either active (equipped with lithium battery) or inactive (without lithium battery). Plaque index and gingival bleeding index were examined at 7th, 14th, and 21st day. Microbial assessment was done for detection of colony forming units (CFU) from the plaque samples which were collected on 0 day and 21st day, both before brushing and after brushing. Results shown a significant reduction in all the parameters and the reduction was more significant in active and inactive ionic toothbrush users. It was concluded that both active and inactive ionic toothbrushes reduced the plaque index and gingival bleeding index scores significantly and active ionic tooth brushes were more effective as compared to inactive ionic toothbrushes. There was no soft tissue trauma following the use of both type of toothbrushes, which showed that ionic toothbrushes were equally safe for regular long-term use.

Sangramiento gingival y motivación / Gingival bleeding and motivation

Se realiza un estudio en 50 alumnos en edades entre 15 y 29 años, en el que es utilizado un índice cualitativo de sangramiento como indicador de cambios subclínicos gingivales. Se seleccionan dos grupos aleatoriamente, el de control al que sólo se le realizaron los recuentos de áreas sangrantes, sin ningún tipo de actividad educativa y el experimental que fue motivado en cada visita de chequeo. Se demuestra en los resultados obtenidos el efecto positivo que tiene la motivación sobre el sangramiento gingival