ABSTRACT
Este estudo avaliou a atividade antimicrobiana in vitro de três dentifrícios infantis, sendo um sem fluoreto, um contendo 500 e outro 1100 ppm de NaF. Os microorganismos utilizados foram: S. aureus (S.a), S. mutans (S.m), E feacalis (E.f), E. coli (E.c). empregou-se a Concentração Inibitória Mínima (MIC) e diluições seriadas (1:2 a 1:128). Não se observou atividade antimicrobiana para o dentifrício sem fluoreto. As diluições correspondentes às MICs dos dentifrícios contendo 500 e 1100 ppm de NaF foram, respectivamente: S.a (4,4), E.f (64,128), S.m (4,8) e E.c (2,2). Concluiu-se que o dentifrício sem fluoreto não apresentou atividade antimicrobiana e que os dentifrícios contendo fluoreto apresentaram MICs similares e atividade antimicrobiana para todos os microorganismos.
Subject(s)
Fluorine Compounds/standards , Dentifrices/standards , In Vitro Techniques , Microbial Sensitivity TestsABSTRACT
O objetivo desta pesquisa foi comparar o controle da placa bacteriana em pacientes ortodônticos ao utilizarem um dentifrício contendo triclosan e outro controle. Foram selecionados, aleatoriamente, 13 pacientes e divididos em dois grupos: o primeiro grupo utilizou durante três meses o dentifrício experimental e o segundo grupo utilizou, durante o mesmo período, um dentifrício controle e vice-versa. Foram realizadas avaliações dos Índices Gengival e de Placa em diferentes períodos de tempo. Os resultados, submetidos ao teste T de Student, indicaram que não houve diferença estatisticamente significativa entre dentifrício controle e o experimental utilizados.
Subject(s)
Humans , Male , Female , Adolescent , Adult , Dentifrices/standards , Orthodontics , Dental Plaque/therapy , Triclosan/standardsABSTRACT
Foram analisados, com potenciômetro, dezesseis dentifrícios, quanto ao conteúdo de flúor total (flúor solúvel + flúor no Na2FPO3 + insolúvel), em amostras frescas e envelhecidas, por 48 horas a 45ºC, e quanto ao pH. Doze (75 por cento) näo apresentaram conteúdo de flúor total, como indicado pelos fabricantes; todos apresentaram as concentraçöes de flúor total diminuídas após o envelhecimento; quatro (25 por cento), contendo somente NaF, mantiveram as concentraçöes de flúor totais informadas pelos fabricantes quando novos, e ligeiramente inferiores quando envelhecidos, oito säo ácidos, um neutro e sete básicos
Subject(s)
Dentifrices/analysis , Dentifrices/standards , Fluorine , Hydrogen-Ion Concentration , ToothpastesSubject(s)
Patent , Dentifrices/standards , Societies, Dental/standards , Argentina , Quality ControlABSTRACT
En muestras de fluoruros tópicos de uso odontológico empleados en el país de diversos tipo, origen y formas farmacéuticas se analizó su condición de expendio de acuerdo a las normas entregadas por el Instituto de Salud Pública, se determinó la concentración de flúor total soluble que ellas presentan mediante un método potenciométrico, y se cuantificó el pH de los productos. Los resultados nos indican que la mayoría de los fluoruros tópicos de procedencia extranjera no presentan registro sanitario. El relación a la determinación de pH casi todos los productos presentan carácter ácido y las determinaciones de fluoruro indican coincidencia entre lo declarado y lo encontrado para los productos tópicos de baja concentración de fluoruro, pero no para los de alta concentración. Se recomienda una mayor fiscalización de la comunidad odontológica sobre los fluoruros de uso tópico sobre todo en los de origen foráneo, porque se podrían estar usando productos que no cumplen los requisitos necesarios de concentración de flúor
Subject(s)
Drug Compounding/standards , Fluorine/analysis , Fluorides, Topical/chemistry , Mouthwashes/standards , Mouthwashes/chemistry , Dentifrices/standards , Dentifrices/chemistry , Hydrogen-Ion Concentration , Legislation, Pharmacy/standards , Potentiometry , Toothpastes/analysis , Toothpastes/standardsABSTRACT
Roughness on tooth surface is a very important factor in increasing the rate of the accumulation of deposits of both dental plaque and calculas. It is a rational procedure, following scaling and root planning instrumentation, to polish the exposed root surface to reduce surface roughness. In the presented paper an experimental work was carried out to investigate the effect of the following factors on the surface roughness and rate of wear at the root planed dentine surfaces, using Denesco webbed rubber polishing cup and water alone. [a] Speed of cup rotation [r.p.m.]. [b] Load applied [g]. [c] Duration time [seconds]. A total of 28 recently extracted adults' teeth were randomly selected for the experimental work in this investigation. The surface to be tested was scaled and planed by sealers and periodental curettes and then was flattened by lapping. Each tooth was embedded in a special mould. The surface roughness degrees were measured using Talysurf type 4 and Surface Roughness Meter. The amount of dimensional wear was measured by means of the Abbe vertical Metroscope. A special apparatus simulating the polishing tool was designed, manufactured and set-up in the Production Eng. Dept., Faculty of Eng., Alexandria University enabling the application of different applied loads [300 - 900 g] and different rotational cup speeds [185 - 1230 r.p.m.] for different duration periods up to 300 secs. Relations were achieved concluding with the optimum working conditions to give best surface qualities
Subject(s)
Dentifrices/standardsABSTRACT
The presented paper was carried out to complete the study of part [I] experimentally to determine the effects of specific polishing agents on the enamel or restorative dental materials. Especially the effect on the surface roughness degree and the rate of wear at root planed dentine surfaces. The presented work was based on the assumption that the exposed root surfaces to be tested would be planed during periodental therapy and that the polishing of the exposed dentine surfaces would enhance root surface smoothness. The purpose of the presented paper was the experimental continuation of part [I]; To start investigating the effect of some different polishing agents; [The Detartrine Paste was taken as the first example] on tooth planed root surface for different working conditions; polishing period time, pressure applied to tooth surface, speed of rotation r.p.m. of the Densco rubber polishing cup with the objective to determine the optimum working conditions, to obtain maximum smoothness of the root surfaces, at the same time the amount of wear on the root planed surface was measured. Relations were achieved concluding with the optimum working polishing conditions to get best surface qualities