Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Filtrar
Más filtros










Base de datos
Intervalo de año de publicación
1.
Caries Res ; 43(6): 462-7, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-20016176

RESUMEN

This clinical study evaluated the effect of different oral hygiene protocols on the bacterial composition of dental plaque. After a 2-week period of using fluoride-free toothpaste, 30 participants followed three 1-week experimental protocols, each followed by 2-week fluoride-free washout periods in a randomized crossover examiner-blind controlled trial. The 1-week experimental protocols comprised the use of AmF/SnF(2) toothpaste twice daily, after which participants either (1) rinsed with tap water, (2) did not rinse but only spat out the toothpaste, or (3) rinsed with an AmF/SnF(2) mouthwash. In the fluoride-free washout periods, the participants brushed their teeth with fluoride-free toothpaste without further instructions. Six hours after the last brushing (+/- rinsing) of each period, buccal plaque samples in the upper molar region were taken. The microbiota composition of the plaque samples was analyzed by checkerboard DNA:DNA hybridization. A statistically significant reduction was found in the total amount of DNA of the 39 major plaque species measured, and in the proportions of some acid-producing bacterial strains after the period having used the AmF/SnF(2) toothpaste + AmF/SnF(2) mouthrinsing. The results indicate that using the AmF/SnF(2) toothpaste and rinse combination could result in plaque of lower cariogenicity.


Asunto(s)
Aminas/uso terapéutico , Bacterias/efectos de los fármacos , Cariostáticos/uso terapéutico , Placa Dental/microbiología , Antisépticos Bucales/uso terapéutico , Fluoruros de Estaño/uso terapéutico , Pastas de Dientes/uso terapéutico , Actinomyces/efectos de los fármacos , Adulto , Bacterias/clasificación , Estudios Cruzados , Diaminas/uso terapéutico , Combinación de Medicamentos , Femenino , Fluoruros/uso terapéutico , Humanos , Lacticaseibacillus rhamnosus/efectos de los fármacos , Masculino , Neisseria mucosa/efectos de los fármacos , Hibridación de Ácido Nucleico , Higiene Bucal , Método Simple Ciego , Streptococcus/clasificación , Streptococcus/efectos de los fármacos , Agua
2.
Ned Tijdschr Tandheelkd ; 116(7): 347-53, 2009 Jul.
Artículo en Holandés | MEDLINE | ID: mdl-19673233

RESUMEN

In 2007 a study was undertaken of the restorative care index of the teeth of children under the age of 18. The aim of this study was to gain insight into the factors associated with the restorative care index in children. Factors investigated were (post-) brushing, inspection frequency, sweets-consumption frequency, socio-economic status and treatment or lack thereof by a general practitioner or dentist who works in a clinic for child health care. This study made use of statistics assembled for an earlier study of children formerly covered by public health insurance in the municipality of The Hague and research carried out at child dental clinics. Socio-economic status and the level of oral care were correlated with dental quality. No patient-bound factors were significantly correlated with the level of care. There was however a positive correlation between the'type' of dentist (family dentist or dentist associated with a clinic for child dental care) and the chance of curative treatment (in the case of developing caries).


Asunto(s)
Atención Dental para Niños/estadística & datos numéricos , Salud Bucal , Cepillado Dental/estadística & datos numéricos , Adolescente , Cariogénicos/administración & dosificación , Niño , Preescolar , Índice CPO , Caries Dental/epidemiología , Femenino , Humanos , Masculino , Países Bajos , Oportunidad Relativa , Higiene Bucal , Factores de Riesgo , Clase Social , Factores Socioeconómicos , Adulto Joven
3.
Caries Res ; 42(6): 460-5, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18997466

RESUMEN

BACKGROUND: Clinical studies on the caries-preventive properties of chlorhexidine mouthrinses are limited and the results are inconclusive. AIM: The aim of this study was to elucidate the contribution of a 0.2% chlorhexidine mouthrinse to the protection of enamel and dentine against demineralization. METHODS: In this randomized two-treatment, two-leg study 14 individuals wearing partial prostheses were enrolled. Sound enamel and dentine specimens were placed in situ for 4 weeks. Twice daily, a mouthrinse was performed with either chlorhexidine or saline (control) depending on the experimental group the participant was allocated to. After the experimental period, plaque samples were collected from the surface of the specimens and from natural tooth surfaces to assess the organic acid production upon a sucrose challenge. The specimens were analyzed for mineral loss by transversal microradiography. RESULTS: This study could not demonstrate a significantly better protection of enamel and dentine against demineralization by the chlorhexidine treatment compared to saline. No differences in acid production of plaque samples from the chlorhexidine-treated and control groups were observed. This result was also found for plaque samples originating from the natural tooth surfaces. CONCLUSION: Mouth rinsing with 0.2% chlorhexidine did not prevent demineralization of dentine and enamel in situ.


Asunto(s)
Antiinfecciosos Locales/uso terapéutico , Cariostáticos/uso terapéutico , Clorhexidina/uso terapéutico , Esmalte Dental/efectos de los fármacos , Dentina/efectos de los fármacos , Desmineralización Dental/prevención & control , Ácidos , Animales , Biopelículas , Cariogénicos/metabolismo , Bovinos , Estudios Cruzados , Placa Dental/metabolismo , Humanos , Ácido Láctico/metabolismo , Microrradiografía , Persona de Mediana Edad , Antisépticos Bucales/uso terapéutico , Cloruro de Sodio , Sacarosa/metabolismo
4.
Clin Oral Investig ; 11(1): 77-81, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17043870

RESUMEN

Previous work showed that a single application of 40% chlorhexidine varnish, EC40, reduced plaque acidogenicity upon sucrose challenge during less than 3 weeks. It was questioned whether lactic acid production could be reduced significantly longer when the treatment was intensified. Therefore, the effects of three consecutive EC40 applications on plaque acidogenicity were evaluated. Nine subjects who participated in the previous study received three full mouth EC40 applications within 1 week. Before the first application and up to 9 weeks after the third application, plaque samples were taken after a 10% sucrose rinse and analyzed for organic acids with capillary electrophoresis. At baseline, the mean provoked lactic acid concentration was 1.64 (+/-0.69) micromol/mg protein. At the first and seventh day after the third application, there was too little plaque to measure acid concentrations. At 2 weeks after the third application, lactic acid concentrations were significantly reduced (p < 0.05). The acid concentrations 3 weeks after the third application (1.61 (+/-0.99) micromol/mg protein) did not differ from the values at baseline (paired T test, p > 0.05). We conclude that a triple 40% chlorhexidine varnish treatment did not affect plaque acidogenicity for more than 3 weeks. From comparison with a previous study, we conclude that the triple treatment with EC40 within 1 week was not more effective in reducing plaque acidogenicity than the single one.


Asunto(s)
Antiinfecciosos Locales/administración & dosificación , Cariostáticos/administración & dosificación , Clorhexidina/administración & dosificación , Placa Dental/química , Placa Dental/tratamiento farmacológico , Ácido Acético/análisis , Ácido Acético/metabolismo , Adulto , Relación Dosis-Respuesta a Droga , Femenino , Humanos , Concentración de Iones de Hidrógeno , Ácido Láctico/análisis , Ácido Láctico/metabolismo , Masculino , Resultado del Tratamiento
5.
Caries Res ; 40(5): 444-8, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16946615

RESUMEN

The aim of the present study was to assess fluoride concentrations in unstimulated saliva and buccal dental plaque 6 h after an oral hygiene procedure that consisted of brushing with an AmF/SnF2 dentifrice and different post-brush rinsing protocols: expectorating the excess of dentifrice foam and rinsing with tap water, expectorating only, or rinsing with 10 ml AmF/SnF2 mouthwash. The fluoride concentrations in plaque and saliva were increased after all three experimental protocols compared to F-free periods. The increase of the fluoride concentration in saliva was more pronounced after AmF/SnF2 mouthrinse as compared to rinsing with water and expectorating the excess of dentifrice foam. Such an effect was not seen in dental plaque. It is concluded that the potentially beneficial effect of not rinsing or fluoride rinsing after tooth brushing is not reflected in an increased fluoride concentration in newly formed dental plaque 6 h after brushing.


Asunto(s)
Aminas/uso terapéutico , Cariostáticos/análisis , Cariostáticos/uso terapéutico , Placa Dental/química , Fluoruros/análisis , Antisépticos Bucales/química , Fluoruro de Sodio/uso terapéutico , Fluoruros de Estaño/uso terapéutico , Pastas de Dientes/uso terapéutico , Adulto , Aminas/química , Estudios Cruzados , Combinación de Medicamentos , Femenino , Humanos , Masculino , Saliva/química , Método Simple Ciego , Estadísticas no Paramétricas , Fluoruros de Estaño/química , Cepillado Dental
6.
Caries Res ; 40(3): 245-50, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16707874

RESUMEN

The aim of this clinical study was to evaluate the effect of various rinsing protocols on oral acid production 6 h after tooth brushing with an amine fluoride/stannous fluoride (AmF/SnF2) toothpaste. After a 14-day period of using F-free toothpaste, 30 participants followed three experimental protocols each, followed by F-free washout periods in a randomized crossover trial. They used AmF/SnF2 toothpaste twice daily for 1 week, and after brushing, they either rinsed with tap water, omitted the post-brush rinse, or rinsed with an AmF/SnF2 mouthwash. In the F-free washout periods, the participants brushed their teeth without further instructions. Six hours after the last brushing (+/-rinsing) of each period, subjects rinsed with 10 ml 10% sucrose solution for 2 min. A tongue film sample and a buccal plaque sample were taken 4 and 8 min after the sucrose challenge, respectively. Metabolic acid ions were determined by capillary electrophoresis. The results show that (1) omitting the post-brush water rinse did not reduce the production of lactic, acetic or minor acids in plaque, nor on the tongue, and that (2) the additional use of AmF/SnF2 mouthwash after brushing reduced the acid production in plaque and tongue samples for at least 6 h. The distributions of acids produced in the plaque or tongue samples were not statistically different between experimental periods. It is concluded that an increase in the antimetabolic effect of AmF/SnF2 toothpaste in between two daily brushing exercises is not achieved by omitting the post-brush water rinse. The additional use of AmF/SnF2 mouthwash after brushing is effective in reducing the acid metabolism in dental plaque and tongue flora.


Asunto(s)
Cariostáticos/uso terapéutico , Placa Dental/metabolismo , Fluoruros/uso terapéutico , Antisépticos Bucales , Lengua/microbiología , Ácidos/análisis , Adulto , Distribución de Chi-Cuadrado , Estudios Cruzados , Femenino , Humanos , Masculino , Antisépticos Bucales/química , Antisépticos Bucales/uso terapéutico , Sacarosa/administración & dosificación , Cepillado Dental , Pastas de Dientes/química , Pastas de Dientes/uso terapéutico
7.
Caries Res ; 37(5): 369-73, 2003.
Artículo en Inglés | MEDLINE | ID: mdl-12925829

RESUMEN

The relationship between the numbers of salivary mutans streptococci and the acid production in dental plaque after a single application of the 40% chlorhexidine varnish EC40 has been studied. Thirteen healthy subjects were treated with EC40 varnish. Saliva samples were taken before and up to 12 weeks after treatment to count mutans streptococci and lactobacilli. At the same time points plaque samples were taken before and after sucrose challenge and analyzed for protein and organic acid. Suppression of salivary mutans streptococci was observed together with a reduced production of lactic acid in sucrose-challenged dental plaque in 9 subjects while inhibition of acid production without significant suppression of mutans streptococci was observed in the other 4 participants. The duration of the effects differed among the individuals but never exceeded 6 weeks. We conclude that a prolonged suppression of mutans streptococci and acid production was not achieved by a single treatment with EC40 varnish in all subjects. Moreover, reduced acidogenicity of dental plaque after chlorhexidine treatment was not necessarily predicted by suppression of mutans streptococci in saliva.


Asunto(s)
Antiinfecciosos Locales/uso terapéutico , Clorhexidina/uso terapéutico , Placa Dental/fisiopatología , Saliva/microbiología , Streptococcus mutans/efectos de los fármacos , Adulto , Antiinfecciosos Locales/administración & dosificación , Ácidos Carboxílicos/análisis , Cariogénicos/efectos adversos , Clorhexidina/administración & dosificación , Recuento de Colonia Microbiana , Placa Dental/química , Femenino , Estudios de Seguimiento , Humanos , Concentración de Iones de Hidrógeno , Ácido Láctico/antagonistas & inhibidores , Lactobacillus/efectos de los fármacos , Modelos Lineales , Masculino , Sacarosa/efectos adversos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA