Complete denture hygiene solutions: antibiofilm activity and effects on physical and mechanical properties of acrylic resin.

BACKGROUND: Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. OBJECTIVE: To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. METHODOLOGY: For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). RESULTS: Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p<0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p<0.001), surface roughness (p=0.006) and flexural strength (p<0.001). Moreover, RC induced the highest values of changes in solubility (p<0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p<0.05). CONCLUSION: SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits.

Complete denture hygiene solutions: antibiofilm activity and effects on physical and mechanical properties of acrylic resin

Abstract Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. Objective To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. Methodology For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). Results Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p<0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p<0.001), surface roughness (p=0.006) and flexural strength (p<0.001). Moreover, RC induced the highest values of changes in solubility (p<0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p<0.05). Conclusion SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits.

PHYSICAL THERAPY ACTIVITY AFTER BREAST CANCER MASTECTOMY: A LITERATURE REVIEW / Atuação fisioterapêutica na mastectomia pós-câncer de mama: uma revisão de literatura

Introduction: Breast cancer is the second most common form of cancer and the leading cause of death by cancer in women. One of the treatments is mastectomy, which brings negative physical and psychological consequences to the lives of these women, significantly reducing their quality of life. Objective: To verify the physical therapy procedures most used in the postoperative period of mastectomy. Methods: Literature review comprising articles published between 2007 and 2017, through consultation of national and international scientific papers in the following databases: Google Scholar, LILACS, MEDLINE, PubMed and SciELO, taking into account the following keywords: physiotherapy, breast cancer, mastectomy, mammoplasty, quality of life. Results: The following modalities were identified: complex decongestive therapy (CDT), manual lymphatic drainage, kinesiotherapy, low power laser, ultrasound, pneumatic compression, manual therapy, Kinesio taping and high voltage electrical stimulation. Conclusion: CDT is the most used and effective technique, however, combining several techniques results in a more complete, global and efficient treatment, showing that physical therapy is essential in all phases of treatment and significantly improves the quality of life of women that went through mastectomy.

Introdução: O câncer de mama é o segundo tipo de neoplasia mais frequente e a principal causa de morte por câncer em mulheres. Dentre os tratamentos está a mastectomia, trazendo consequências negativas físicas e psicológicas para a vida dessas mulheres, diminuindo significativamente a sua qualidade de vida. Objetivo: Verificar os procedimentos fisioterapêuticos mais utilizados no pós-operatório de mama após cirurgia de mastectomia. Métodos: Revisão de literatura entre 2007 e 2017, por meio de consulta a artigos científicos nacionais e internacionais nas seguintes bases de dados: Google Acadêmico, LILACS, MEDLINE, PubMed e SciELO, levando-se em consideração as palavras-chave: fisioterapia, câncer de mama, mastectomia, mamoplastia, qualidade de vida. Resultados: Foram levantados 18 artigos, nos quais foram identificadas as seguintes modalidades: terapia complexa descongestiva (TCD), drenagem linfática manual, cinesioterapia, laser de baixa potência, ultrassom, compressão pneumática, terapia manual, Kinesio taping e estimulação elétrica de alta voltagem. Conclusão: A TCD é a técnica mais utilizada e eficaz, entretanto, a combinação de diversas técnicas leva a um tratamento mais completo, globalizado e eficiente, mostrando que a fisioterapia é essencial em todas as fases do tratamento, melhorando de maneira significativa a qualidade de vida da mulher mastectomizada.