The Efficacy of Passive Ultrasonic Activation of Organic Solvents on Dissolving Two Root Canal Sealers

Introduction: The aim of this in vitro study was to evaluate the dissolving efficacy of eucalyptol and orange oil solvents associated with passive ultrasonic activation (PUA) in zinc oxide-eugenol (ZOE) based and epoxy resin-based root canal sealers. Methods and Materials: Seventy samples of each sealer were prepared and then randomized according to the solvent and the time of the ultrasonic activation (n=5). The mean amount of weight loss of sealers was calculated in percentages and was analyzed by using the Kruskal-Wallis and Bonferroni post-hoc tests. Results: The greatest values of weight loss were obtained with the ZOE sealer groups (P<0.05), regardless of the solvent that was used. An application of PUA for 3 min, with a renewal of orange oil solvent each min, showed the greatest percentage of weight loss in ZOE sealer compared to the others templates (P<0.05). Neither the solvent nor the different times had any influence on the weight loss of the resin sealer (P>0.05). Conclusion: The application of PUA with essential oils can be an effective method in dissolving ZOE based sealers.Keywords: Eucalyptol; Orange Oil; Retreatment; Solvent; Ultrasoun

DESINFORMAÇÃO SOBRE A VACINAÇÃO CONTRA A COVID-19: UMA ANÁLISE SOB A ÓTICA DO “ATIVISMO DIGITAL PERNICIOSO”

A desinformação sobre a vacinação contra a Covid-19 constitui um grave problema de saúde pública, que é ampliado pelo chamado “ativismo digital pernicioso”. Diante disso, objetiva-se verificar quais direitos são violados a partir dessa prática, especialmente, no que tange a conteúdos desinformativos relacionados à imunização contra a Covid-19. Para tanto, aplica-se o método de abordagem indutivo, combinado com o método de procedimento monográfico e a técnica de pesquisa documental, sendo possível concluir, em síntese, que o “ativismo digital pernicioso” relacionado à desinformação sobre a vacinação contra a Covid-19 viola importantes direitos fundamentais da coletividade, como a proteção da saúde pública e o direito informacional da sociedade

Incidence of Dentinal Defects and Vertical Root Fractures after Endodontic Retreatment and Mechanical Cycling

Introduction: The aim of this study was to evaluate the incidence of dentinal defects and vertical root fractures (VRFs) after endodontic retreatment and mechanical cycling (MC). Methods and Materials: Two hundred mandibular premolars were selected. Forty teeth were left unprepared (control group). The remaining 160 root canals were prepared with ProTaper instruments and filled by using two different techniques [eighty with lateral compaction (LC) and eighty with single-cone (SC)]. Forty canals from each group (LC and SC) received no further treatment. The remaining eighty teeth were divided into two groups (LCR and SCR) (n=40) in order to undergo the removal of the root filling, re-preparation and refilling with lateral compaction and single-cone, respectively. All of the teeth were subjected to MC (1,000,000 cycles, 130 N, 2.2 Hz and 37°C). The roots were sectioned at 3, 6 and 9 mm from the apex and observed under 20× magnification. The defects were classified as: no defect, VRF and other defects. Statistical analysis was performed using the Fisher’s Exact test and the Chi-Squared tests (α=0.05). Results: MC alone did not promote any other defects or VRFs. Experimental groups presented higher dentinal defects than the control group (P=0.021). Retreatment groups did not present a higher amount of dentinal defects than the groups that were subjected to the first treatment (P>0.05). Conclusion: Endodontic treatment and retreatment, regardless of the filling technique and MC, did not influence the occurrence of dentinal defects or VRFs in the human premolars.Keywords: Defects; Endodontics; Retreatment; Root Cana

Síndrome da tensão pré-menstrual observada em usuárias do ambulatório municipal de saúde da mulher

Many women suffer with Premenstrual Tension Syndrome (STPM) that has symptoms that precede menstruation, causing irritation, anxiety and low self esteem. The STPM affects women in the productive stage causing physical, psychological and social alterations.The aim of the research was to identify the users of an ambulatory health clinic of Tupanciretã, RS. This is a descriptive and exploratory study with qualitative-quantitative approaches. The results provided that women have STPM with different intensity, symptoms range from physical and mental and interfere with daily functioning of women.It was concluded that overall efforts, especially those from health professionals, and through practices which provide communication and health education for women affected by the STPM. In addition to the implementation of actions that provide changing habits, attitudes and behaviors that these women are looking for a better quality of life.Muchas mujeres sufren de Síndrome de Tensión Premenstrual (STPM), que presenta síntomas que anteceden a la menstruación, generando irritación, ansiedad y baja autoestima. El STPM afecta a mujeres en la etapa productiva provocando alteraciones físicas, psíquicas y sociales. El objetivo de la investigación fue identificar y caracterizar a las usuarias de un ambulatorio de salud del municipio de Tupanciretã-RS. Se trata de un estudio descriptivo y exploratorio con abordajes cuali-cuantitativos. Los resultados aportaron que las mujeres poseen STPM con diferente intensidad, los síntomas varían entre los físicos y psíquicos e interfieren en el desempeño cotidiano de las mujeres. Se concluye que es necesario el esfuerzo de los profesionales de salud, por medio de prácticas que proporcionen comunicación y educación en salud en las mujeres afectadas por el STPM. Aparte de la implementación de acciones que prevean cambios de hábitos, actitudes y comportamientos buscando que estas mujeres tengan una mejor calidad de vida. Muitas mulheres sofrem de Síndrome da Tensão Pré-Menstrual (STPM), síndrome que apresenta sintomas precedentes a menstruação, causando irritação, ansiedade e baixa autoestima. A STPM afeta as mulheres causando alterações física, psicológica e social. O objetivo da pesquisa foi identificar e caracterizar as usuárias de um ambulatório municipal de saúde no município de Tupanciretã - RS. Trata-se de um estudo descritivo e exploratório, com abordagem quali - quantitativa. Os resultados denotam que as mulheres têm STPM em diferente intensidade, os sintomas variam entre as mulheres, interferindo a ordem física e emocional. Conclui-se que se faz necessário o esforço dos profissionais de saúde, por meio de práticas que proporcionem comunicação e educação em saúde com as mulheres afetadas pela STPM. Além de ações que preveem mudanças de hábitos, atitudes e comportamentos a fim de que estas mulheres tenham uma melhor qualidade de vida

Premenstrual tension syndrome observed in the users of an ambulatory women's health

Muchas mujeres sufren de Síndrome de Tensión Premenstrual (STPM), que presenta síntomas que anteceden a la menstruación, generando irritación, ansiedad y baja autoestima. El STPM afecta a mujeres en la etapa productiva provocando alteraciones físicas, psíquicas y sociales. El objetivo de la investigación fue identificar y caracterizar a las usuarias de un ambulatorio de salud del municipio de Tupanciretã-RS. Se trata de un estudio descriptivo y exploratorio con abordajes cuali-cuantitativos. Los resultados aportaron que las mujeres poseen STPM con diferente intensidad, los síntomas varían entre los físicos y psíquicos e interfieren en el desempeño cotidiano de las mujeres. Se concluye que es necesario el esfuerzo de los profesionales de salud, por medio de prácticas que proporcionen comunicación y educación en salud en las mujeres afectadas por el STPM. Aparte de la implementación de acciones que prevean cambios de hábitos, actitudes y comportamientos buscando que estas mujeres tengan una mejor calidad de vida.RESUMO Muitas mulheres sofrem de Síndrome da Tensão Pré-Menstrual (STPM), síndrome que apresenta sintomas precedentes a menstruação, causando irritação, ansiedade e baixa autoestima. A STPM afeta as mulheres causando alterações física, psicológica e social. O objetivo da pesquisa foi identificar e caracterizar as usuárias de um ambulatório municipal de saúde no município de Tupanciretã - RS. Trata-se de um estudo descritivo e exploratório, com abordagem quali - quantitativa. Os resultados denotam que as mulheres têm STPM em diferente intensidade, os sintomas variam entre as mulheres, interferindo a ordem física e emocional. Conclui-se que se faz necessário o esforço dos profissionais de saúde, por meio de práticas que proporcionem comunicação e educação em saúde com as mulheres afetadas pela STPM. Além de ações que preveem mudanças de hábitos, atitudes e comportamentos a fim de que estas mulheres tenham uma melhor qualidade de vida.ABSTRACT Many women suffer with Premenstrual Tension Syndrome (STPM) that has symptoms that precede menstruation, causing irritation, anxiety and low self esteem. The STPM affects women in the productive stage causing physical, psychological and social alterations. The aim of the research was to identify the users of an ambulatory health clinic of Tupanciretã, RS. This is a descriptive and exploratory study with qualitative-quantitative approaches. The results provided that women have STPM with different intensity, symptoms range from physical and mental and interfere with daily functioning of women. It was concluded that overall efforts, especially those from health professionals, and through practices which provide communication and health education for women affected by the STPM. In addition to the implementation of actions that provide changing habits, attitudes and behaviors that these women are looking for a better quality of lif

Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Abstract Introduction The aim of endodontic retreatment is to remove the previous root filling materials completely to allow for the subsequent steps of cleaning, canal shaping and filling replacement. Objective To evaluate the efficacy of passive ultrasonic irrigation (PUI) in the removal of residual root filling material after removing the bulk of the root filling with nickel-titanium rotary instruments. Material and method Eighteen mesial isthmus-containing roots of human mandibular molars were prepared and filled. The root canal filling was removed with the ProTaper Retreatment system and K-files. The specimens were randomized into 2 groups (n = 9), both irrigated with 2.5% NaOCl and 17% EDTA. In the conventional group, an irrigation syringe was used. In the PUI group, the PUI technique was used. The roots were sectioned longitudinally and evaluated under stereomicroscopy. Student’s t test was used to compare groups and the general linear model was used to compare the apical, cervical, and middle root thirds within each group, in regard to the percentages of remaining residual filling material. Result There was no statistically significant intergroup difference, irrespective of which root third was evaluated (P > 0.05). In the PUI group, the apical third showed a significantly higher percentage of residual filling material, in comparison with the cervical (P = 0.038) and middle (P = 0.029) thirds. Conclusion The PUI technique was not more effective than the conventional irrigation technique in removing residual root filling material during endodontic retreatment in root canals with a complex anatomy

Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment

Abstract Introduction The aim of endodontic retreatment is to remove the previous root filling materials completely to allow for the subsequent steps of cleaning, canal shaping and filling replacement. Objective To evaluate the efficacy of passive ultrasonic irrigation (PUI) in the removal of residual root filling material after removing the bulk of the root filling with nickel-titanium rotary instruments. Material and method Eighteen mesial isthmus-containing roots of human mandibular molars were prepared and filled. The root canal filling was removed with the ProTaper Retreatment system and K-files. The specimens were randomized into 2 groups (n = 9), both irrigated with 2.5% NaOCl and 17% EDTA. In the conventional group, an irrigation syringe was used. In the PUI group, the PUI technique was used. The roots were sectioned longitudinally and evaluated under stereomicroscopy. Student’s t test was used to compare groups and the general linear model was used to compare the apical, cervical, and middle root thirds within each group, in regard to the percentages of remaining residual filling material. Result There was no statistically significant intergroup difference, irrespective of which root third was evaluated (P > 0.05). In the PUI group, the apical third showed a significantly higher percentage of residual filling material, in comparison with the cervical (P = 0.038) and middle (P = 0.029) thirds. Conclusion The PUI technique was not more effective than the conventional irrigation technique in removing residual root filling material during endodontic retreatment in root canals with a complex anatomy

Estresse oxidativo no Diabetes mellitus : papel do antioxidante quecertina

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