Background: Propolis is a natural product produced by bees, which has garnered attention due to i... more Background: Propolis is a natural product produced by bees, which has garnered attention due to its harmlessness and numerous beneficial biological properties. This randomized, double-blinded, placebo-controlled clinical trial aimed to assess the effect of toothpastes containing different concentrations of propolis (10% and 15%) on the control of dentin hypersensitivity (DH). Methods: Sixty-six teeth with DH were randomly divided into three treatment groups (n= 22): placebo (toothpaste without active ingredient), 10% propolis (toothpaste with 10% propolis), and 15% propolis (toothpaste with 15% propolis). DH was assessed at three distinct time points (baseline, 15 and 30 days after treatment) by tactile and evaporative stimuli, using the visual analog scale (VAS). Data were analyzed using Friedman and Kruskal-Wallis tests. A significance level of 5% was used in all analyses. Results: All the groups showed reduction in DH during the study period (p < 0.05). The experimental groups...
Context: Remineralizing agents have been recommended to restore the integrity of bleached enamel.... more Context: Remineralizing agents have been recommended to restore the integrity of bleached enamel. Aims: The aim of this study was to evaluate the effect of fluoride at high concentration (5000 ppm) applied to bleached enamel. Materials and Methods: A total of 30 specimens obtained from newly extracted third molars were divided into two groups (n = 15) as follows: control group and fluoride group. Specimens of both groups received bleaching treatment with 35% hydrogen peroxide, were then submitted to the Vickers hardness number/colorimetric test (VHN/CT) (n = 5) and Ra (n = 10) tests, and stored in artificial saliva. After bleaching, fluoride group received the application of a fluoride-based dentifrice, during 5 min. VHN, RS, and CT analysis of both groups were performed before and after treatments. For VHN, five indentations per specimen were performed, using a microdurometer. Ra analysis was performed with a rugosimeter. The color was analyzed through the CIE L* a* b* system, respectively, using a colorimeter. Statistical Analysis: For intergroup statistical analysis, ANOVA with Tukey's posttest was used. All tests were calculated at a significance level of 5%. Results: There was statistically significant difference (P < 0.01) between the analyzed groups, on VHN, Ra, and CT evaluations. Conclusions: The use of fluoride-based dentifrice at 5000 ppm was effective in minimizing the deleterious effects on bleached enamel.
Revista da Sociedade Brasileira de Medicina Tropical, 1993
Os autores relatam o caso de um paciente procedente do Município de Barreirinhas, MA, portador de... more Os autores relatam o caso de um paciente procedente do Município de Barreirinhas, MA, portador de leishmaniose cutânea disseminada, que apresentava 58 lesões distribuídas pelo corpo, sob os mais variados aspectos com predominância da lesão ulcerada. Discutem a dificuldade do diagnóstico laboratorial na fase inicial da investigação e suas implicações com a terapêutica. O parasita isolado e caracterizado pela técnica de anticorpos monoclonais foi a Leishmania viannia braziliensis. Esta forma da doença é diferente da leishmaniose cutânea difusa, encontrada no Maranhão, cujo agente etiológico é a Leishmania (Leishmania) amazonensis, responsável pela grande maioria dos casos de leishmaniose tegumentar naquele Estado. Os possíveis mecanismos de disseminação das lesões são também discutidos neste trabalho.
Purpose: To evaluate the influence of different surface treatments on the clinical behavior of no... more Purpose: To evaluate the influence of different surface treatments on the clinical behavior of non-carious cervical sclerotic lesions (NCCLs) over an 18-month follow-up period. Methods: 128 NCCLs from 32 volunteers were randomized into four groups (n=32): G1-control, without preoperative treatment of the dentin surface; G2, dentin conditioning with 17% ethylenediaminetetracetic acid (EDTA) for 2 minutes; G3, increase in dentin surface roughness with diamond bur and G4, increase in dentin surface roughness with diamond bur + dentin conditioning with 17% EDTA for 2 minutes. Results: Differences between groups were tested using the Friedman test (α= 0.05). A questionnaire was administered to volunteers about risk factors related to NCCLs. The relationship between the questionnaire data and the clinical performance of the restorations was analyzed using the multiple logistic regression test (α= 0.05). The variables related to parafunctional habits, anxiety and/or depression were significantly related to the manifestation of postoperative sensitivity. Roughening the sclerotic dentin with a diamond bur increased postoperative sensitivity within 12 months. The presence of parafunctional habits and anxiety/depression may lead to postoperative sensitivity. Clinical significance: Roughening the sclerotic dentin with a diamond bur increased postoperative sensitivity within 12 months.
OBJECTIVES This study evaluated the effect of photobiomodulation (PBM) combined with 8% strontium... more OBJECTIVES This study evaluated the effect of photobiomodulation (PBM) combined with 8% strontium acetate (SA8%) in the treatment of dentin hypersensitivity (DH) in non-carious lesions and analyzed the risk factors with the patient's quality of life. METHODS Eighty teeth with DH were randomly allocated into four treatment groups (n = 20): G1, PBM imitation + toothpaste with no active ingredient; G2, PBM imitation + toothpaste with SA8%; G3, PBM + toothpaste without the active ingredient; and G4, PBM + toothpaste with SA8%. Participants were provided with a questionnaire on the experience of dentin hypersensitivity (QEDH) to assess the impact of desensitizing treatment on health-related quality of life (HRQL). Friedman and Kruskal-Wallis tests were used for intra- and intergroup comparisons, and Wilcoxon and Mann-Whitney tests were used to analyze HRQL. All analyses used significance levels of 5%. RESULTS Intergroup comparisons revealed a significant difference (p < 0.05); G4 had the best response in terms of HD reduction in G4 compared to the other groups on the 7th day of assessment (T3). Only G4 showed a statistically significant difference (p < 0.05) in the reduction of EDH for intragroup analysis. CONCLUSION The combination of therapies was more effective in reducing DH than the isolated use of these strategies. CLINICAL RELEVANCE The combination of therapies is effective in the treatment of DH.
Background: Propolis is a natural product produced by bees, which has garnered attention due to i... more Background: Propolis is a natural product produced by bees, which has garnered attention due to its harmlessness and numerous beneficial biological properties. This randomized, double-blinded, placebo-controlled clinical trial aimed to assess the effect of toothpastes containing different concentrations of propolis (10% and 15%) on the control of dentin hypersensitivity (DH). Methods: Sixty-six teeth with DH were randomly divided into three treatment groups (n= 22): placebo (toothpaste without active ingredient), 10% propolis (toothpaste with 10% propolis), and 15% propolis (toothpaste with 15% propolis). DH was assessed at three distinct time points (baseline, 15 and 30 days after treatment) by tactile and evaporative stimuli, using the visual analog scale (VAS). Data were analyzed using Friedman and Kruskal-Wallis tests. A significance level of 5% was used in all analyses. Results: All the groups showed reduction in DH during the study period (p < 0.05). The experimental groups...
Context: Remineralizing agents have been recommended to restore the integrity of bleached enamel.... more Context: Remineralizing agents have been recommended to restore the integrity of bleached enamel. Aims: The aim of this study was to evaluate the effect of fluoride at high concentration (5000 ppm) applied to bleached enamel. Materials and Methods: A total of 30 specimens obtained from newly extracted third molars were divided into two groups (n = 15) as follows: control group and fluoride group. Specimens of both groups received bleaching treatment with 35% hydrogen peroxide, were then submitted to the Vickers hardness number/colorimetric test (VHN/CT) (n = 5) and Ra (n = 10) tests, and stored in artificial saliva. After bleaching, fluoride group received the application of a fluoride-based dentifrice, during 5 min. VHN, RS, and CT analysis of both groups were performed before and after treatments. For VHN, five indentations per specimen were performed, using a microdurometer. Ra analysis was performed with a rugosimeter. The color was analyzed through the CIE L* a* b* system, respectively, using a colorimeter. Statistical Analysis: For intergroup statistical analysis, ANOVA with Tukey's posttest was used. All tests were calculated at a significance level of 5%. Results: There was statistically significant difference (P < 0.01) between the analyzed groups, on VHN, Ra, and CT evaluations. Conclusions: The use of fluoride-based dentifrice at 5000 ppm was effective in minimizing the deleterious effects on bleached enamel.
Revista da Sociedade Brasileira de Medicina Tropical, 1993
Os autores relatam o caso de um paciente procedente do Município de Barreirinhas, MA, portador de... more Os autores relatam o caso de um paciente procedente do Município de Barreirinhas, MA, portador de leishmaniose cutânea disseminada, que apresentava 58 lesões distribuídas pelo corpo, sob os mais variados aspectos com predominância da lesão ulcerada. Discutem a dificuldade do diagnóstico laboratorial na fase inicial da investigação e suas implicações com a terapêutica. O parasita isolado e caracterizado pela técnica de anticorpos monoclonais foi a Leishmania viannia braziliensis. Esta forma da doença é diferente da leishmaniose cutânea difusa, encontrada no Maranhão, cujo agente etiológico é a Leishmania (Leishmania) amazonensis, responsável pela grande maioria dos casos de leishmaniose tegumentar naquele Estado. Os possíveis mecanismos de disseminação das lesões são também discutidos neste trabalho.
Purpose: To evaluate the influence of different surface treatments on the clinical behavior of no... more Purpose: To evaluate the influence of different surface treatments on the clinical behavior of non-carious cervical sclerotic lesions (NCCLs) over an 18-month follow-up period. Methods: 128 NCCLs from 32 volunteers were randomized into four groups (n=32): G1-control, without preoperative treatment of the dentin surface; G2, dentin conditioning with 17% ethylenediaminetetracetic acid (EDTA) for 2 minutes; G3, increase in dentin surface roughness with diamond bur and G4, increase in dentin surface roughness with diamond bur + dentin conditioning with 17% EDTA for 2 minutes. Results: Differences between groups were tested using the Friedman test (α= 0.05). A questionnaire was administered to volunteers about risk factors related to NCCLs. The relationship between the questionnaire data and the clinical performance of the restorations was analyzed using the multiple logistic regression test (α= 0.05). The variables related to parafunctional habits, anxiety and/or depression were significantly related to the manifestation of postoperative sensitivity. Roughening the sclerotic dentin with a diamond bur increased postoperative sensitivity within 12 months. The presence of parafunctional habits and anxiety/depression may lead to postoperative sensitivity. Clinical significance: Roughening the sclerotic dentin with a diamond bur increased postoperative sensitivity within 12 months.
OBJECTIVES This study evaluated the effect of photobiomodulation (PBM) combined with 8% strontium... more OBJECTIVES This study evaluated the effect of photobiomodulation (PBM) combined with 8% strontium acetate (SA8%) in the treatment of dentin hypersensitivity (DH) in non-carious lesions and analyzed the risk factors with the patient's quality of life. METHODS Eighty teeth with DH were randomly allocated into four treatment groups (n = 20): G1, PBM imitation + toothpaste with no active ingredient; G2, PBM imitation + toothpaste with SA8%; G3, PBM + toothpaste without the active ingredient; and G4, PBM + toothpaste with SA8%. Participants were provided with a questionnaire on the experience of dentin hypersensitivity (QEDH) to assess the impact of desensitizing treatment on health-related quality of life (HRQL). Friedman and Kruskal-Wallis tests were used for intra- and intergroup comparisons, and Wilcoxon and Mann-Whitney tests were used to analyze HRQL. All analyses used significance levels of 5%. RESULTS Intergroup comparisons revealed a significant difference (p < 0.05); G4 had the best response in terms of HD reduction in G4 compared to the other groups on the 7th day of assessment (T3). Only G4 showed a statistically significant difference (p < 0.05) in the reduction of EDH for intragroup analysis. CONCLUSION The combination of therapies was more effective in reducing DH than the isolated use of these strategies. CLINICAL RELEVANCE The combination of therapies is effective in the treatment of DH.
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