Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 31
Filter
1.
RFO UPF ; 25(2): 232-240, 20200830. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1357796

ABSTRACT

Introdução: este estudo avaliou a ação antimicrobiana de sete dentifrícios nacionais com ação antiplaca ou antimicrobiana, conforme os fabricantes, sobre os patógenos orais Streptococcus mutans e Candida albicans. Métodos: a avaliação dos dentifrícios foi realizada pelo teste de difusão em ágar. Placas de Petri com meios de cultura ágar cérebro coração e ágar Sabourad foram semeadas com suspensão microbiana padronizada de S. mutans e C. albicans. Poços foram confeccionados no ágar semeado e preenchidos com as soluções dos dentifrícios diluídas em 1:1, 1:2, 1:4 e 1:8, além dos controles positivo (solução de clorexidina 2%) e negativo (dentifrício sem princípios ativos). Após incubação por 48h/37°C, os halos de inibição do crescimento microbiano foram medidos com paquímetro e régua milimetrada, e os resultados finais dos halos obtidos em milímetros. Resultados e conclusão: verificou-se que todos os dentifrícios, na diluição de 1:1, foram efetivos sobre C. albicans e S. mutans, exceto o composto de bicarbonato de sódio e extratos vegetais, o qual não inibiu S. mutans. Na diluição de 1:2, somente o dentifrício contendo triclosan inibiu C. albicans, enquanto todos mostraram algum potencial de inibição ao S. mutans. Nas demais diluições, não foram observados halos de inibição de ambos os microrganismos. A C. albicans demonstrou ser mais resistente à ação inibitória dos antimicrobianos dos dentifrícios testados neste estudo. S. mutans demonstrou ser mais sensível à ação dos dentifrícios, no entanto, a diluição durante a escovação dentária reduz a ação inibitória esperada, indicando a importância da remoção mecânica do biofilme.(AU)


Introduction: this study analyzed the antimicrobial activity in seven national dentifrices with antiplaque or antimicrobial substances in their composition, according the manufacturer, on the oral pathogens Streptococcus mutans and Candida albicans. Methods: the dentifrices antimicrobial effect evaluation was carried out by agar diffusion test. S. mutans and C. albicans. Padronized microbial suspension was cultured on Petri dishes containing Brain Hearth Agar and Sabourad Agar, respectively. Wells were prepared in the cultured agar and filled with 1:1, 1:2, 1:4 and 1:8 dilutions of dentifrice solutions, and besides positive (2% chlorhexidine solutions) and negative controls (dentifrices without active ingredients). After 48h/37°C incubation, the microbial growing inhibition zones were measured with a paquimeter and a millimeter rule, being the final zone results obtained in millimeters. Results and conclusion: on 1:1 dilution, all dentifrices were effective on C. albicans and S. mutans, except one with vegetal extract and sodium bicarbonate composition, which did not inhibit S. mutans. In 1:2 dilution, only tricolsan-containing dentifrice inhibited C. albicans, while all dentifrices presented some inhibition potential on S. mutans. There were no inhibition zones for both microorganims in other dilutions. We concluded that C. albicans showed to be more resistant to antimicrobial agents tested in the dentifrices, in this study. S. mutans showed to be more sensitive to tested dentifrices, however, the product dilution during toothbrushing reduces the expected inhibitory action, strengthening the importance of the mechanical removal of dental biofilm.(AU)


Subject(s)
Streptococcus mutans/drug effects , Candida albicans/drug effects , Dentifrices/pharmacology , Anti-Infective Agents/pharmacology , Chlorhexidine/pharmacology , Reproducibility of Results , Biofilms/drug effects , Dentifrices/chemistry
2.
RFO UPF ; 23(3): 268-273, 18/12/2018. tab, ilus
Article in Portuguese | LILACS, BBO | ID: biblio-995341

ABSTRACT

Objetivo: avaliar a eficácia de um dentifrício, que contém em sua composição extratos vegetais e xilitol para inibição de Streptococcus mutans (UA159). Materiais e método: para verificação da atividade antimicrobiana, foram realizados ensaios in vitro de difusão de ágar, baseados na metodologia da norma M2A8 Anvisa. O estudo foi feito utilizando inóculo de 108 UFC/mL da cepa de S. mutans. O princípio básico foi a difusão de uma solução de dentifrício na superfície do ágar a partir de um disco impregnado. O ensaio foi realizado utilizando como controle negativo água deionizada estéril e como controle positivo clorexidina 0,12%, e foram comparados aos dentifrícios Orgânico Natural® e Colgate Total 12®. O resultado foi analisado a partir da medição dos halos de inibição (mm). Resultados: a clorexidina 0,12% teve maior halo de inibição (21,08 ± 1,02), seguida do dentifrício Orgânico Natural® (11,33 ± 4,35) e do dentifrício Colgate Total 12 (3,93 ± 4,67) P<0,05. Conclusão: a inibição da cepa de S. mutans evidenciada neste ensaio in vitro demonstra o potencial antimicrobiano do dentifrício Orgânico Natural®, mesmo como um possível auxiliar no controle do biofilme dental cariogênico. (AU)


Objective: the goal was to evaluate the effectiveness of a dentifrice that has a chemical composition of plant extracts and xylitol to inhibit the Streptococcus mutans (UA159). Materials and methods: based on the methodology of the M2A8 Anvisa standard, in vitro agar diffusion assays were performed to verify antimicrobial activity. The study was carried out using inoculum of 108 CFU / mL of S. mutans strain. The principle was the diffusion of a dentifrice solution on the agar surface, from a disc impregnated therewith. The assay was performed using as a negative control the sterile deionized water, 0.12% chlorhexidine as a positive control compared to Orgânico Natural® and Colgate Total 12® toothpastes. The result was analyzed from the inhibition halos measurement (mm). Results: the chlorhexidine 0.12% had the biggest inhibition halo (21,08 ± 1,02) followed by the Orgânico Natural® dentifrice (11,33 ± 4,35) and the Colgate Total 12® dentifrice (3,93 ± 4,67) P<0,05. Conclusion: the inhibition of the S. mutans strain realized in these in vitro assay by the Orgânico Natural® dentifrice demonstrate the antimicrobial potential of the same as a possible aid in the control of the cariogenic dental biofilm. (AU)


Subject(s)
Streptococcus mutans/drug effects , Toothpastes/pharmacology , Plant Extracts/pharmacology , Dentifrices/pharmacology , Anti-Infective Agents, Local/pharmacology , Reference Values , Xylitol/pharmacology , Colony Count, Microbial , Chlorhexidine/pharmacology , Statistics, Nonparametric , Biofilms/drug effects
3.
Int. j. odontostomatol. (Print) ; 10(1): 135-142, abr. 2016. ilus
Article in English | LILACS | ID: lil-782633

ABSTRACT

Dentin hypersensitivity is a relatively common clinical condition, which affects a large part of the world's population. The objective of this study was to evaluate the influence of previous and prolonged treatment with desensitizing dentifrices (DD) on bond strength to dentin, promoted by a self-etching adhesive system. Seventy non-carious bovine incisors were used, and divided into five groups (n= 14), according to the desensitizing toothpaste used, such as, G1: distilled water (WATER) (control); G2: Colgate Total 12 (CT12) (control); G3: Colgate Sensitive Pro-Relief (CSPR); G4: Sensodyne Rapid Relief (SRR); G5: Sensodyne Repair & Protect (SRP). Teeth had their buccal surfaces flattened until the exposure of dentin, and fragments of 4x4x2 mm were obtained. Fragments were included in polyvinyl chloride (PVC) cylinders and exposed to 17 % EDTA for 1 min. Subsequently, specimens were submitted to 20 000 cycles of simulated dental toothbrushing. After 24 h in artificial saliva, specimens were hybridized (Clearfil SE Bond ­ Kuraray), as well as resin composite cylinders built on dentin surfaces. Samples were stored in distilled water, at 37 C for 24 h, and the shear bond strength was determined. The highest bond strength (MPa) value was seen in CT12 group (4.39), and the lowest one in CSPR group (3.34). Data were statistically analyzed by 1-way ANOVA (ð= 0.05), and results showed that there were no significant differences (p= 0.5986) considering the DD factor. The predominant fracture pattern was cohesive on dentin. The previous and prolonged use of different DD did not affect dentin bond strength promoted by a self-etching adhesive system.


La hipersensibilidad dentinaria es una condición clínica relativamente común, que afecta a una gran parte de la población mundial. El objetivo fue evaluar la influencia del tratamiento previo y prolongado con dentífricos desensibilizantes (DD) en fuerza de adhesión a la dentina, que promueve un sistema adhesivo de autograbado. Se utilizaron 70 incisivos bovinos no cariados, y se dividieron en cinco grupos (n= 14), de acuerdo con la pasta de dientes desensibilizante utilizada: G1: agua destilada (agua) (control), G2: Colgate Total 12 (CT12) (control), G3: Colgate Sensitive Pro-Alivio (CSPR), G4: Sensodyne Rápido Alivio (SRR) y G5: Sensodyne Repair & Protect (SRP). Los dientes tenían sus superficies bucales aplanadas hasta la exposición de la dentina, y se obtuvieron fragmentos de 4x4x2 mm. Los fragmentos se incluyeron en cilindros de cloruro de polivinilo y se expusieron a 17 % de EDTA durante un 1 min. Después, las muestras se sometieron a 20 000 ciclos de cepillado dental simulado. Después de 24 h en saliva artificial, las muestras se hibridaron (Clearfil SE Bond - Kuraray), y cilindros de resina compuesta fueron construidos sobre superficies de dentina. Las muestras se almacenaron en agua destilada, a 37 °C durante 24 h y luego se determinó la resistencia al cizallamiento. El mayor valor de resistencia a la unión (MPa) se observó en el grupo CT12 (4,39), y el menor en el grupo CSPR (3,34). Los datos fueron analizados estadísticamente mediante ANOVA de un factor 1 (ð= 0,05), y los resultados no mostraron diferencias significativas (p= 0,5986) teniendo en cuenta el factor de los DD. El patrón de fractura predominante sobre la dentina fue el cohesivo. El uso previo y prolongado de diferente DD no afectó resistencia de unión a la dentina promovido por un sistema adhesivo de autograbado.


Subject(s)
Animals , Dentin-Bonding Agents , Dentifrices/pharmacology , Dentin/drug effects , Dentin Sensitivity/drug therapy , Dentin Desensitizing Agents/pharmacology , Stress, Mechanical , Time Factors , Adhesives , Analysis of Variance , Dental Etching
4.
Braz. oral res. (Online) ; 30(1): e82, 2016. tab, graf
Article in English | LILACS | ID: biblio-952033

ABSTRACT

Abstract The aim of this clinical study was to evaluate tooth color changes (ΔE) and tooth sensitivity (TS) associated with whitening dentifrices. Sixty participants were selected according to inclusion and exclusion criteria and then allocated to three groups (n = 20): Colgate Luminous White (G1), Close Up White Now (G2) and Sorriso dentifrice (G3-control). The participants were instructed to use only the provided dentifrice and toothbrush in standardized oral hygiene procedures for 4 weeks. ΔE was assessed by spectrophotometry (CIELab System) whereas TS was determined by a visual analog scale at baseline and weekly using four assessment points. The data were analyzed by two-way ANOVA and Tukey's post-hoc test and Friedman test (α = 0.05). ΔE (baseline-assessment point 4) showed no significant difference (p>0.05) across the groups: G1 (ΔE = 5.1), G2 (ΔE = 6.8), and G3 (ΔE = 4.4). Δb (baseline-assessment point 4) was significantly different (p < 0.05) in G2 (3.8) when compared to G1 (-0.2) and G3 (0.3). There was no significant difference (p > 0.05) in TS at baseline. Both the control and whitening dentifrices caused similar tooth color changes (ΔE). There was no significant TS during the study period.


Subject(s)
Humans , Male , Female , Adult , Tooth Bleaching/methods , Dentifrices/pharmacology , Dentin Sensitivity/chemically induced , Tooth Bleaching Agents/pharmacology , Spectrophotometry , Time Factors , Double-Blind Method , Analysis of Variance , Treatment Outcome , Color , Dentifrices/adverse effects , Tooth Bleaching Agents/adverse effects , Visual Analog Scale
5.
Braz. oral res ; 27(6): 517-523, Nov-Dec/2013. tab, graf
Article in English | LILACS | ID: lil-695984

ABSTRACT

The purpose of this study was to evaluate whether the use of desensitizing dentifrices used 15 days prior to and after in-office tooth bleaching could eliminate or reduce tooth sensitivity. After institutional review board approval and informed consent, 45 subjects were selected and divided into 3 groups according to the dentifrice selected: Colgate Total (CT), Colgate Sensitive Pro-Relief (CS) or Sensodyne ProNamel (SP). The subjects used toothpaste and a toothbrush provided to them for 15 days prior to bleaching. They were then submitted to two in-office bleaching sessions (Whiteness HP Blue Calcium). Their tooth sensitivity was assessed using the Visual Analog Scale (VAS) for a week after each session. Their tooth shade alteration was measured with a Vitapan Classical shade guide to determine if the dentifrices could influence the effectiveness of the bleaching agent. The data were submitted to Wilcoxon, Kruskal-Wallis and Mann-Whitney tests (α = 0.05). The use of desensitizing dentifrices did not affect the bleaching efficacy. In regard to tooth sensitivity, there was a statistically significant difference between the results of the Control Group and Group T2 after the first session (p = 0.048). There was no statistically significant difference in the results for the other groups after the first session. In regard to the second session, there was no statistically significant difference in the results for all the groups. The use of a desensitizing dentifrice containing nitrate potassium reduced tooth sensitivity during the bleaching regimen. Dentifrices containing arginine and calcium carbonate did not reduce tooth sensitivity. Color change was not influenced by the dentifrices used.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Young Adult , Dentifrices/therapeutic use , Dentin Desensitizing Agents/therapeutic use , Dentin Sensitivity/drug therapy , Tooth Bleaching/adverse effects , Toothache/drug therapy , Color , Complex Mixtures/therapeutic use , Drug Combinations , Dentifrices/pharmacology , Fluorides/therapeutic use , Nitrates/therapeutic use , Premedication , Phosphates/therapeutic use , Potassium Compounds/therapeutic use , Random Allocation , Statistics, Nonparametric , Silicic Acid/adverse effects , Time Factors , Treatment Outcome , Tooth Bleaching Agents/adverse effects , Toothpastes/adverse effects
6.
J. appl. oral sci ; 21(6): 525-532, Nov-Dec/2013. graf
Article in English | LILACS, BBO | ID: lil-697811

ABSTRACT

No in situ protocol has assessed the dose-response effects of fluoride dentifrices involving low-fluoride formulations. Objective: To assess the ability of an in situ remineralization model in determining dose-response effects of dentifrices containing low fluoride concentrations ([F]) on bovine enamel. Material and Methods: Volunteers wore palatal appliances containing demineralized enamel blocks and brushed their teeth and devices with the dentifrices supplied (double-blind, crossover protocol) separately for 3 and 7 days. Surface hardness (SH), integrated subsurface hardness (ΔKHN) and [F] in enamel were determined. Data were analyzed by ANOVA, Tukey's test and Pearson's correlation (p<0.05). Results: Dose-response relationships were verified between [F] in dentifrices and SH, ΔKHN and enamel [F]. Higher correlation coefficients between enamel [F] and SH and ΔKHN were obtained for the 3-day period. Significant differences in SH and ΔKHN were observed among all groups for the 3-day period, but not between 0-275, 275-550, and 550-1,100 µg F/g dentifrices for the 7-day period, nor between 3- and 7-day periods for the 1,100 µg F/g groups. Conclusions: Considering that the peak remineralization capacity of the conventional dentifrice (1,100 µg F/g) was achieved in 3 days, this experimental period could be used in future studies assessing new dentifrice formulations, especially at low-fluoride concentrations. .


Subject(s)
Humans , Animals , Male , Female , Adult , Cattle , Young Adult , Dental Enamel/drug effects , Dentifrices/pharmacology , Fluorides/pharmacology , Tooth Demineralization/drug therapy , Tooth Remineralization/methods , Analysis of Variance , Cross-Over Studies , Dentifrices/therapeutic use , Dose-Response Relationship, Drug , Double-Blind Method , Fluorides/therapeutic use , Hardness Tests , Surface Properties/drug effects , Time Factors , Treatment Outcome
7.
Braz. dent. j ; 24(3): 253-257, May-Jun/2013. tab, graf
Article in English | LILACS | ID: lil-681877

ABSTRACT

The objective of this study was to evaluate in vitro the effect of a low fluoride toothpaste (450 µgF/g, NaF) combined with calcium citrate (Cacit) and sodium trimetaphosphate (TMP) on enamel remineralization. Bovine enamel blocks had the enamel surface polished sequentially to determine the surface hardness. After production of artificial carious lesions, the blocks selected by their surface hardness were submitted to remineralization pH cycling and daily treatment with dentifrice suspensions (diluted in deionized water or artificial saliva): placebo, 275, 450, 550 and 1,100 µgF/g and commercial dentifrice (positive control, 1,100 µgF/g). Finally, the surface and cross-section hardness was determined for calculating the change of surface hardness (%SH) and mineral content (%∆Z). Fluoride in enamel was also determined. The data from %SH, %∆Z and fluoride were subjected to two-way analysis of variance followed by Student-Newman-Keuls's test (p<0.05). The mineral gain (%SH and %∆Z) was higher for toothpastes diluted in saliva (p<0.05), except for the 450 µgF/g dentifrice with Cacit/TMP (p>0.05). The 450 Cacit/TMP toothpaste and the positive control showed similar results (p>0.05) when diluted in water. A dose-response was observed between fluoride concentration in toothpastes and fluoride present in enamel, regardless of dilution. It was concluded that it is possible to enhance the remineralization capacity of low F concentration toothpaste by of organic (Cacit) and inorganic (TMP) compounds with affinity to hydroxyapatite.


O objetivo do presente trabalho foi avaliar in vitro o efeito de um dentifrício com reduzida concentração de fluoreto (450 µgF/g, NaF) associado ao citrato de cálcio (Cacit) e trimetafosfato de sódio (TMP) na remineralização do esmalte. Blocos de esmalte bovino tiveram sua superfície de esmalte polida seqüencialmente para determinação da dureza de superfície. Após o desenvolvimento de lesões artificiais de cárie, os blocos selecionados através da dureza de superfície foram submetidos a ciclagem de remineralização e tratamento diário com suspensões de dentifrícios (diluição em água deionizada ou saliva artificial): placebo, 275, 450, 550 e 1.100 µgF/g e com dentifrício comercial (controle positivo, 1.100 µgF/g). Ao término, determinou-se a dureza de superfície e em secção longitudinal, para cálculo da variação da dureza de superfície (%SH) e do conteúdo mineral (%∆Z). O fluoreto presente no esmalte também foi determinado. Os dados de %SH, %∆Z e fluoreto foram submetidos a análise de variância a dois critérios seguido pelo teste de Student-Newman-Keuls (p<0,05). O ganho mineral (%SH e %∆Z) foi maior para os dentifrícios diluídos em saliva (p<0,05), exceto para os dentifrícios 450 µg F/g com Cacit/TMP (p>0,05). Os dentifrícios 450 Cacit/TMP e controle positivo apresentaram resultados semelhantes (p>0,05) quando diluídos em água. Uma relação dose-resposta foi observada entre a concentração de fluoreto nos dentifrícios e o fluoreto presente no esmalte, independente da diluição. Concluiu-se que é possível melhorar a capacidade de remineralização de dentifrícios com reduzida concentração de fluoreto pela adição de compostos orgânico (Cacit) e inorgânico (TMP) com afinidade a hidroxiapatita.


Subject(s)
Animals , Cattle , Calcium Citrate/pharmacology , Cariostatic Agents/pharmacology , Dental Enamel/drug effects , Fluorides/pharmacology , Polyphosphates/pharmacology , Tooth Remineralization/methods , Cariostatic Agents/administration & dosage , Dose-Response Relationship, Drug , Dental Caries/physiopathology , Dental Enamel/chemistry , Dentifrices/analysis , Dentifrices/pharmacology , Fluorides/administration & dosage , Fluorides/analysis , Hardness , Hydrogen-Ion Concentration , Materials Testing , Minerals/analysis , Placebos , Saliva, Artificial/chemistry , Water/chemistry
8.
Braz. dent. j ; 24(1): 35-39, 2013. tab, graf
Article in English | LILACS | ID: lil-671349

ABSTRACT

This study evaluated the capacity of fluoride acidic dentifrices (pH 4.5) to promote enamel remineralization using a pH cycling model, comparing them with a standard dentifrice (1,100 µgF/g). Enamel blocks had their surface polished and surface hardness determined (SH). Next, they were submitted to subsurface enamel demineralization and to post-demineralization surface hardness analysis. The blocks were divided into 6 experimental groups (n=10): placebo (without F, pH 4.5, negative control), 275, 412, 550, 1,100 µgF/g and a standard dentifrice (positive control). The blocks were submitted to pH cycling for 6 days and treatment with dentifrice slurries twice a day. After pH cycling, surface and cross-sectional hardness were assessed to obtain the percentage of surface hardness recovery (%SHR) and the integrated loss of subsurface hardness (ΔKHN). The results showed that %SHR was similar among acidic dentifrices with 412, 550, 1,100 µgF/g and to the positive control (Tukey's test; p>0.05). For ΔKHN, the acidic dentifrice with 550 µg F/g showed a better performance when compared with the positive control. It can be concluded that acidic dentifrice 550 µgF/g had similar remineralization capacity to that of positive control.


O presente estudo objetivou avaliar a capacidade de dentifrícios fluoretados acidulados (pH 4,5) em promover a remineralização do esmalte utilizando um modelo de ciclagem de pH e compará-lo a um dentifrício padrão (1.100 µgF/g). Blocos de esmalte tiveram suas superfícies polidas e a dureza de superfície determinada (SH). Em seguida, foram submetidos à desmineralização subsuperficial e a dureza de superfície pós-desmineralização foi determinada. Os blocos foram divididos em seis grupos experimentais (n=10): placebo (controle negativo), 275, 412, 550, 1.100 µgF/g e um dentifrício padrão (controle positivo). Os blocos foram submetidos à ciclagem de pH durante seis dias e tratamentos com dentifrício diluído duas vezes por dia. Após a ciclagem de pH, a dureza de superfície e em secção transversal foram avaliadas para obtenção da porcentagem de recuperação de dureza de superfície (%SHR) e área integrada da perda de dureza de subsuperfície (ΔKHN). Os resultados mostraram que %SHR foi semelhante entre os dentifrícios ácidos 412, 550, 1.100 µgF/g e controle positivo (teste de Tukey; p>0,05). Para ΔKHN, o dentifrício acidulado com 550 µgF/g mostrou uma performance melhor quando comparado ao controle positivo. Conclui-se que os dentifrícios acidulados 550 µgF/g apresentaram capacidade de remineralização semelhante ao controle positivo.


Subject(s)
Animals , Cattle , Dental Enamel/drug effects , Dentifrices/pharmacology , Tooth Remineralization , Dental Stress Analysis , Dental Enamel/chemistry , Dentifrices/chemistry , Fluorides/analysis , Hydrogen-Ion Concentration , Hardness/drug effects , Phosphorus/analysis , Statistics, Nonparametric , Surface Properties
9.
Braz. dent. j ; 23(5): 547-554, Sept.-Oct. 2012. ilus, tab
Article in English | LILACS | ID: lil-660358

ABSTRACT

The adhesion of Candida albicans to surfaces is the prerequisite for occurrence of denture stomatitis, a common disease diagnosed among denture wearers. A routine of denture cleansing is essential to prevent biofilm formation and the onset of this infection. The aim of this study was to investigate the effectiveness of combining brushing and cleansing agents in killing C. albicans biofilm. Disks of acrylic resin were made, sterilized, and inoculated with C. albicans (10(7) cfu/mL). After incubation (37°C/48 h), specimens were randomly assigned to 10 experimental groups (n=9): 5 subjected to brushing with distilled water or cleansing agents - dentifrice slurry, 2% chlorhexidine gluconate (CHX), 1% sodium hypochlorite (NaOCl), and Polident fresh cleanse® (combined method) - and 4 exposed to the cleansing agents without brushing (immersion). Non-cleansed specimens were used as positive controls. The viability of cells was evaluated by XTT reduction method. Results were analyzed by Mann-Whitney and Kruskal-Wallis tests (α=0.05). The combined method was significantly more effective (p<0.0001) in reducing biofilm viability than the immersion. Brushing with CHX and NaOCl resulted in 100% removal of the biofilm. Immersion in the agents reduced significantly (p<0.0001) the biofilm viability, with CHX being the most effective (p<0.0001). The use of the combined method of brushing with cleansing agents is an effective method to reduce C. albicans biofilm, being CHX and NaOCl the most effective solutions.


A adesão de Candida albicans às superfícies é o primeiro passo para o desenvolvimento da estomatite protética, uma infecção frequente diagnosticada entre os usuários de próteses. Uma adequada higienização é essencial para prevenir a formação de biofilme microbiano e o início desta infecção. O objetivo deste estudo foi avaliar a efetividade da escovação com diferentes soluções na eliminação de biofilme de C. albicans. Para isso, discos de resina acrílica foram confeccionados, esterilizados e inoculados com uma suspensão de 10(7) células/mL de C. albicans. Após incubação (37°C/48 h), os espécimes foram aleatoriamente divididos em 10 grupos experimentais (n=9): 5 submetidos à escovação com água ou agentes de limpeza (água destilada, dentifrício, digluconato de clorexidina (CHX) a 2%, hipoclorito de sódio (NaOCl) a 1% e Polident fresh cleanse®) e 4 apenas imersos nos agentes de limpeza. Espécimes não submetidos à higienização foram utilizados como controle positivo. A viabilidade celular foi verificada pelo teste de redução do XTT. Os resultados obtidos foram analisados pelos testes de Mann-Whitney e Kruskal-Wallis (α=0,05). A escovação com todos os agentes de limpeza apresentou redução significativamente superior (p<0,0001) na viabilidade do biofilme quando comparada à exposição dos espécimes às soluções. Escovação com CHX a 2% e NaOCl a 1% resultaram em 100% de inativação do biofilme. A exposição aos agentes de limpeza resultou em redução significativa (p<0,0001) na viabilidade celular, com CHX a 2% sendo o mais efetivo (p<0,0001). A utilização de agentes de limpeza em associação ao método de escovação provou ser efetivo para reduzir biofilme C. albicans, sendo as soluções de CHX e NaOCl as mais efetivas.


Subject(s)
Humans , Biofilms/drug effects , Candida albicans/physiology , Candidiasis, Oral/drug therapy , Dentifrices/pharmacology , Dentures/adverse effects , Stomatitis, Denture/drug therapy , Candida albicans/drug effects , Candidiasis, Oral/microbiology , Chlorhexidine/pharmacology , Dentures/microbiology , Microbial Viability/drug effects , Statistics, Nonparametric , Sodium Hypochlorite/pharmacology , Stomatitis, Denture/microbiology , Toothbrushing
10.
J. Health Sci. Inst ; 30(3)jul.-set. 2012.
Article in Portuguese | LILACS | ID: lil-670575

ABSTRACT

Apesar do controle mecânico ser tido como o melhor método para remoção do biofilme das superfícies dentárias, a utilização de agentes antimicrobianos presentes em soluções para bochechos e em dentifrícios é, muitas vezes, requerida. O presente estudo teve como objetivo revisar a literatura acerca da composição dos dentifrícios atuais, seus princípios ativos e suas indicações clínicas. Para tanto, revisou-se a literatura compreendida entre o período de 1989 a 2011, utilizando-se a combinação das seguintes palavras-chaves: dentifrícios, composição química e flúor, nas línguas inglesa e portuguesa, nas bases de dados Pubmed, BVS, Bireme, SciELO e Portal da Capes. Foram incluídos também livros-texto de referência. Observou-se que os dentifrícios são utilizados para levar várias substâncias à cavidade bucal, objetivando a redução da cárie, das doenças gengivais e periodontais, do cálculo dentário, da hipersensibilidade dentinária e da halitose. Atualmente, os dentifrícios são compostos por: sistemas abrasivos, detergentes, flavorizantes, solventes, umectantes, aglutinantes, edulcorantes, conservantes e princípio ativo. A variedade de substâncias presentes nos dentifrícios é muito grande, sendo essa uma das razões para a grande dificuldade em identificar o dentifrício mais apropriado para cada situação clínica. No intuito de facilitar a aquisição desses produtos, é de suma importância que a composição química e a sua indicação sejam informadas adequadamente.


Although mechanical control is considered the best method to remove dental surfaces biofilm, the use of antimicrobial agents contained in mouthwashes and toothpaste is required. This study aimed to review the literature about the current composition of dentifrices, their active ingredients and clinical indications. Thus the literature between 1989 and 2011 was reviewed, using the following keyword combinations: dentifrice, chemical composition and fluoride, in English and Portuguese languages, in Pubmed, BVS, Bireme, SciELO, and Portal Capes databases. It was also included reference textbooks. It was observed that dentifrices are used to carry out a lot of substances to oral cavity, aiming to reduce caries, gingival and periodontal diseases, dental calculus, dentin hypersensitivity and also halitosis. Nowadays, dentifrices are composed of: abrasive systems, detergents, flavorings, solvents, humectants, binders, sweeteners, preservatives and active ingredient.The variety of substances found in dentifrices is huge, and this is one of the reasons that makes harder to identify the most appropriate dentifrice for each clinical situation. In order to facilitate the acquisition of these products, is quite important that the chemical composition and its indication are informed properly.


Subject(s)
Humans , Action Potentials , Dentifrices/pharmacology , Dentifrices/chemical synthesis , Dentifrices , Dental Plaque/etiology , Dental Plaque/pathology , Dental Plaque/prevention & control
11.
J. appl. oral sci ; 20(1): 94-98, Jan.-Feb. 2012. graf
Article in English | LILACS | ID: lil-618160

ABSTRACT

Because of the growing concerns regarding fluoride ingestion by young children and dental fluorosis, it is necessary to develop new dentifrices. OBJECTIVE: The aim of this study was to evaluate the effect of dentifrices with calcium citrate (Cacit) and sodium trimetaphosphate (TMP) on enamel demineralization. MATERIAL AND METHODS: Enamel blocks (n=70), previously selected through surface hardness analysis, were submitted to daily treatment with dentifrices diluted in artificial saliva and to a pH-cycling model. The fluoride concentration in dentifrices was 0, 250, 450, 550, 1,000 and 1,100 µg F/g. CrestTM was used as a positive control (1,100 mg F/g). Cacit (0.25 percent) and TMP (0.25 percent) were added to dentifrices with 450 and 1,000 µg F/g. Surface hardness was measured again and integrated loss of subsurface hardness and fluoride concentration in enamel were calculated. Parametric and correlation tests were used to determine difference (p<0.05) and dose-response relationship between treatments. RESULTS: The addition of Cacit and TMP did not provide a higher fluoride concentration in enamel, however it reduced (p<0.05) mineral loss when compared to other dentifrices; the dentifrice with Cacit and TMP and a low fluoride concentration presented similar results when compared to a dentifrice with 1,100 mg F/g (p>0.05). CONCLUSIONS: Dentifrices with 450 and 1,000 µg F/g, Cacit and TMP were as effective as a gold standard one.


Subject(s)
Humans , Calcium Citrate/pharmacology , Cariostatic Agents/pharmacology , Dentifrices/pharmacology , Fluorides/pharmacology , Polyphosphates/pharmacology , Tooth Demineralization/prevention & control , Cariostatic Agents/chemistry , Dental Enamel/drug effects , Dentifrices/chemistry , Hardness Tests , Random Allocation , Saliva, Artificial/chemistry
12.
Braz. oral res ; 25(5): 433-438, Sept.-Oct. 2011. tab
Article in English | LILACS | ID: lil-601883

ABSTRACT

The aim of this study was to evaluate the anticaries potential of 500 or 1100 ppm F dentifrices combined with fluoride varnish using a pH-cycling regimen. Seventy primary canines were covered with nail polish, leaving a 4×4 mm window on their buccal surface, and randomly assigned into 7 groups (n = 10): S: sound enamel not submitted to the pH-cycling regimen or treatment; N: negative control, submitted to the pH-cycling regimen without any treatment; D1 and D2: subjected to the pH-cycling regimen and treated twice daily with 1100 or 500 ppm F dentifrice, respectively; VF: fluoride varnish (subjected to F-varnish before and in the middle of the pH-cycling regimen); and VF+D1 and VF+D2. After 10 days, the teeth were sectioned, and enamel demineralization was assessed by cross-sectional hardness at different distances from the dental surface. Data were analyzed using a two-way ANOVA followed by Tukey's test. Dentifrice with 1100 ppm F and the combination of F-varnish with the dentifrices significantly reduced enamel demineralization compared with the negative control (p < 0.05), but the isolated effects of F-varnish and dentifrice with low concentration were not significant (p > 0.05). The effect of combining F-varnish with the dentifrices was not greater than the effect of the dentifrices alone (p < 0.05). The data suggest that the combination of F-varnish with dentifrices containing 500 and 1100 ppm F is not more effective in reducing demineralization in primary teeth than the isolated effect of dentifrice containing 1100 ppm F.


Subject(s)
Humans , Dental Enamel/drug effects , Dentifrices/pharmacology , Fluorides/pharmacology , Tooth Demineralization/prevention & control , Analysis of Variance , Dentifrices/chemistry , Fluorides/chemistry , Hardness Tests , Hydrogen-Ion Concentration , Surface Properties , Time Factors , Tooth, Deciduous
13.
Arch. oral res. (Impr.) ; 7(1): 51-60, jan.-abr. 2011. ilus, tab
Article in English | LILACS, BBO | ID: lil-667652

ABSTRACT

Objective: The purpose of this in vitro study to evaluate antimicrobial efficacy of commercially available herbal dentifrices in comparison with conventional dentifrices against seven oral microbes, namely, Streptococcus mutans, Streptococcus mitis, Streptococcus sanguinis, Streptococcus salivarius, Actinomyces viscosus, Candida albicans, and Lactobacillus acidophilus. Materials and methods: Antimicrobial properties of dentifrices were evaluated by measuring zone of inhibition at 48h on blood agar plates inoculated with microbial strains, using disc diffusion method. Each dentifrice was tested in 100% and 50% concentration. Sterile distilled water was used as control. One way Analysis of Variance followed by Tukey post hoc was used for multiple group comparisons. P value < 0.05 was considered statistically significant. Results: In both, 100% and 50% concentrations maximum zone of inhibition was observed with Smyle™ herbal toothpaste followed by Himalaya herbals™ dental cream. Conclusion: Antimicrobial activity of Smyle™ herbal toothpaste is the best against microorganisms tested in present study.


Objetivo: O propósito deste estudo foi avaliar e comparar a eficácia antimicrobiana de dentifrícios herbaiscomerciais e convencionais contra sete micro-organismos: Streptococcus mutans, Streptococcus mitis, Streptococcus sanguinis, Streptococcus salivarius, Actinomyces viscosus, Candida albicans, and Lactobacillusacidophilus. Materiais e métodos: Propriedades antimicrobianas dos dentifrícios foram avaliadas a partir damedição da zona de inibição utilizando o método de difusão em disco após 48h em placas de ágar sangue inoculadascom as cepas microbianas. Cada dentifrício foi testado nas concentrações de 100% e 50%. O controleconsistiu em água destilada estéril. As comparações entre grupos foram realizadas por ANOVA a um critério eteste de Tukey post hoc, ambos com nível de significância de 5%. Resultados: Em ambas as concentrações de100% e 50%, a zona de inibição máxima foi observada para o dentifrício herbal Smyle® seguido do dentifrícioherbal Himalaya herbals®. Conclusões: O dentifrício herbal Smyle® apresentou o melhor resultado contra osmicro-organismos avaliados no presente estudo.


Subject(s)
Gram-Positive Bacteria , Candida albicans , Dentifrices/pharmacology , Plant Preparations/pharmacology , Analysis of Variance , Anti-Infective Agents , Mouth/microbiology , Plant Extracts/pharmacology , India
14.
Clín. int. j. braz. dent ; 7(1): 16-19, jan.-mar.2011.
Article in Portuguese | LILACS | ID: lil-757822

ABSTRACT

O presente estudo é o terceiro de uma série em que aspectos vinculados aos dentifrícios são abordados. Os efeitos além da cárie são revisados pelo artigo, em especial, efeitos antiplaca, anticálculo, anti-inflamatório, anti-halitose, anti-hipersensibilidade dentinária, removedor de manchas e preventivo da erosão dental. São apresentadas substâncias presentes para atingir os objetivos propostos, seus mecanismos de ação, e uma revisão de seus potenciais efeitos é realizada. Considerando-se as amplas possibilidades de efeitos dos dentifrícios, é responsabilidade do profissional da odontologia indicá-los corretamente para seus pacientes...


The present study is the third of a series addressing issues about dentifrices. The outcomes other than anticaries effects are reviewed in the article, especially antiplaque, anticalculus, anti-inflammatory, anti-halitosis, anti-hipersensitivity, staining removal and anti-erosive potential. The substances involved in these properties are addressed, their mechanisms of action and potential side effects are reviewed. The dentist is responsible for the correct indication of dentifrices to the patients, considering the broad range of indication...


Subject(s)
Humans , Dentifrices , Dentifrices/pharmacology , Oral Health
15.
Rev. bras. odontol ; 67(1): 132-136, jul.-dez. 2010.
Article in Portuguese | LILACS, BBO | ID: lil-563852

ABSTRACT

A doença cárie, quando diagnosticada em seu estágio inicial, é passível de ser tratada de forma não invasiva através de agentes remineralizadores, como os fluoretos. Dentre os compostos fluoretados, destaca-se o dentifrício, que é o que apresenta o melhor custo benefício, devido à praticidade, baixo custo e freqüência de aplicações. Porém, em pacientes de alto risco e/ou de atividade de cárie, a associação de produtos fluoretados pode trazer benefícios adicionais. Neste sentido, o objetivo do presente estudo foi realizar um levantamento da literatura sobre as vantagens e desvantagens da associação de produtos fluoretados no tratamento remineralizador de lesões incipientes de cáries.


Subject(s)
Dental Caries/prevention & control , Dental Caries/drug therapy , Dentifrices/pharmacology , Fluorides, Topical/pharmacology , Tooth Remineralization
16.
Braz. dent. j ; 21(5): 390-395, 2010. ilus
Article in English | LILACS | ID: lil-568981

ABSTRACT

This study quantified alterations in root dentin permeability after exposure to different acid beverages. Twenty-five third molars were sectioned below the cementoenamel junction, the root segment was collected, and the pulp tissue was removed. The root segments were connected to a hydraulic pressure apparatus to measure the permeability of root dentin after the following sequential steps, with 5 specimens in each: 1) phosphoric acid etching for 30 s (maximum permeability), 2) root planning to create new smear layer, 3) exposure to different acid substances for 5 min (orange, cola drink, vinegar, white wine, lemon juice), 4) toothbrushing with sonic toothbrush for 3 min, 5) toothbrushing with sonic toothbrush plus dentifrice for 3 min. Considering step I as 100 percent, the data were converted into percentage and each specimen was its own control. Data were analyzed statistically by Kruskal-Wallis and Dunn's post test at 5 percent significance level. All acidic substances increased dentin permeability significantly after scraping (p< 0.05). Toothbrushing after exposure to acid substances decreased dentin permeability and the association with dentifrice accentuated the decrease (p< 0.05), except for the specimens treated with cola drink. Thus, it may be concluded that all tested acid fruit juices increased dentin permeability, and toothbrushing with or without dentifrice can decrease root dentin permeability after dentin exposure to acid diet.


Este estudo quantificou a alteração na permeabilidade da dentina radicular submetida a diferentes dietas ácidas. Vinte e cinco terceiros molares foram seccionados abaixo da junção cemento-esmalte, a raiz seccionada foi selecionada, e a polpa removida. A seguir, as amostras foram conectadas a um aparato de pressão hidráulica para medir a permeabilidade da dentina radicular de acordo com os seguintes passos: I) tratamento com ácido fosfórico por 30 s (permeabilidade máxima), II) aplainamento radicular para criar nova smear layer, III) exposição a diferentes substâncias ácidas por 5 min (suco de laranja, coca-cola, vinagre, vinho branco e suco de limão), IV) escovação com escova sônica por 3 min, V) escovação com escova sonica mais dentifrício, por 3 min. Os dados foram convertidos em porcentagem em relação ao passo I (100 por cento) e cada amostra foi seu próprio controle. Os resultados mostraram que todas as substâncias ácidas aumentaram significantemente a permeabilidade dentinária após raspagem. Escovação após a exposição a substâncias ácidas diminuiu a permeabilidade e a associação com dentifrício aumentou a redução na permeabilidade dentinária; essa redução adicional não foi observada somente nas amostras tratadas com coca-cola. Com isso, pode-se concluir que todas as substâncias ácidas testadas aumentaram a permeabilidade dentinária, e a escovação com ou sem dentifrício pode diminuir a permeabilidade dentinária radicular após a exposição da dentina a dieta ácida.


Subject(s)
Humans , Young Adult , Beverages , Dentin Permeability/physiology , Dentin/metabolism , Tooth Root/metabolism , Toothbrushing/instrumentation , Acetic Acid , Acid Etching, Dental , Acids , Carbonated Beverages , Citrus , Citrus sinensis , Dentifrices/pharmacology , Dentin Permeability/drug effects , Dentin/drug effects , Hydrogen-Ion Concentration , Phosphoric Acids/pharmacology , Root Planing , Smear Layer , Time Factors , Tooth Root/drug effects , Water , Wine
17.
Rev. bras. odontol ; 65(1): 80-84, jan.-jun. 2008. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-541704

ABSTRACT

O estudo objetivou avaliar a capacidade de formação de biofilme de novo por S. mutans após tratamento de biofiolmes pré-formados com composições de dentifrícios: I- base contendo 500 ppm NaF2 e 2,5% xilitol; II-base contendo 500 ppm Naf2; III-base contendo 10% xilitol; IV-base sem aditivos; V- solução salina fisiológica. Todas as formulações inibiram a formação de novo do biofilme por S. mutans. Maiores inibições foram encontradas para os tratamentos I e II. A composição III também foi efetiva na inibição. As formulações contendo xilitol e/ou NaF2 modularam a formação do biofilme por S. mutans in vitro.


Subject(s)
Biofilms , Dentifrices/pharmacology , Streptococcus mutans , Xylitol/pharmacology
18.
Article in English | IMSEAR | ID: sea-51833

ABSTRACT

Antibacterial activity of a herbal dentifrice Arodent against Streptococcus mutans and Lactobacillus acidophilus was evaluated using Colgate as standard. Both bacterial strains were isolated from the oral cavity on selective media and identified by standard methods. The antibacterial activity was assayed by cup-well method. The bacterial lawn of facultative anaerobe S. mutans was established between two layers of agar under microaerophilic conditions. Five and a half millimeters and 10 mm zones of inhibition were produced by Arodent against S. mutans and L. acidophilus , respectively, under microaerophilic conditions. On the other hand, the standard dentifrice Colgate produced 5.83 mm and 10.17 mm zones of inhibition against S. mutans and L. acidophilus , respectively, under microaerophilic condition. The results suggest that Arodent is an effective antibacterial herbal dentifrice.


Subject(s)
Dentifrices/pharmacology , Humans , Lactobacillus acidophilus/drug effects , Plant Extracts/pharmacology , Streptococcus mutans/drug effects
19.
J. appl. oral sci ; 12(2): 121-126, Apr.-Jun. 2004. tab, graf
Article in English | LILACS, BBO | ID: lil-363055

ABSTRACT

O objetivo do presente estudo foi comparar in vitro o efeito da aplicação tópica de flúor na forma de gel acidulado (FFA) ou neutro (FFN) com um dentifrício fluoretado (MFP), na incorporação e ação anticariogênica do flúor. Foram utilizados 125 blocos obtidos de esmalte humano, divididos em 5 grupos de acordo com o tratamento e submetidos à ciclagem de pH durante dez dias. Analisou-se o flúor incorporado antes e depois da ciclagem de pH; a microdureza superficial (SMH) e a microdureza interna do esmalte (CSMH). Os resultados da concentração de flúor no esmalte após a ciclagem indicou uma maior quantidade de flúor incorporado para todos os grupos comparados ao grupo controle sadio. A microdureza superficial entre APF e MFP, assim como a porcentagem de alteração da microdureza superficial e a perda mineral não mostraram diferenças estatísticas. A porcentagem de volume mineral obtida a partir da microdureza em secção longitudinal demonstrou que o APF tem um padrão melhor na formação da cárie subsuperficial. Os resultados sugerem que o uso de géis acidulados ou a freqüente aplicação de flúor em baixa concentração são medidas eficazes para o controle da cárie dental.


Subject(s)
Humans , Dental Enamel , Dentifrices/pharmacology , Fluorine/pharmacology , In Vitro Techniques , Dental Caries/prevention & control , Dentifrices/classification , Fluorides, Topical/classification , Fluorides, Topical/pharmacology
20.
Braz. oral res ; 18(1): 18-22, jan.-mar. 2004. tab, graf
Article in English | LILACS | ID: lil-362057

ABSTRACT

A aplicação da solução de NaF a 0,02%, no lugar de dentifrício fluoretado, tem sido sugerida para ser aplicada com cotonete nos dentes de bebês para reduzir o risco de fluorose dental. Como o efeito anticariogênico dessa recomendação não tem sido estudado, avaliou-se in vitro seu efeito na redução da desmineralização e incorporação de fluoreto no esmalte de dentes decíduos; dentifrício não fluoretado e fluoretado (1.100 mg F/g) foram utilizados como controles negativo e positivo, respectivamente. O dentifrício fluoretado foi mais efetivo que a solução de NaF a 0,02% na redução de desmineralização e na incorporação de fluoreto no esmalte (p < 0,05). Os dados sugerem que uso alternativo de NaF a 0,02% ao invés de dentifrício fluoretado para reduzir o risco de fluorose dental deve ser reavaliado, especialmente se a cárie dental precisa ser controlada.


Subject(s)
Humans , Dental Enamel/drug effects , Dentifrices/pharmacology , Fluorides/pharmacology , In Vitro Techniques , Sodium Fluoride/pharmacology , Tooth Demineralization/chemically induced , Tooth, Deciduous/drug effects , Analysis of Variance , Dental Caries/prevention & control , Dentifrices/adverse effects , Fluorides/adverse effects , Fluorosis, Dental/etiology , Sodium Fluoride/adverse effects , Tooth, Deciduous/metabolism
SELECTION OF CITATIONS
SEARCH DETAIL