ABSTRACT
Objectives@#This study investigated the effects of physically damaged and resin-contaminated tips on radiant emittance, comparing them with new undamaged, non-contaminated tips using 3 pieces of spectrophotometric laboratory equipment. @*Materials and Methods@#Nine tips with damage and/or resin contaminants from actual clinical situations were compared with a new tip without damage or contamination (control group). The radiant emittance was recorded using 3 spectrophotometric methods: a laboratory-grade thermopile, a laboratory-grade integrating sphere, and a portable light collector (checkMARC). @*Results@#A significant difference between the laboratory-grade thermopile and the laboratory-grade integrating sphere was found when the radiant emittance values of the control or damaged/contaminated tips were investigated (p 0.05). Regardless of the method used to quantify the light output, the mean radiant emittance values of the damaged/contaminated tips were significantly lower than those of the control (p < 0.05). The beam profile of the damaged/ contaminated tips was less homogeneous than that of the control. @*Conclusions@#Damaged/contaminated tips can reduce the radiant emittance output and the homogeneity of the beam, which may affect the energy delivered to composite restorations.The checkMARC spectrophotometer device can be used in dental offices, as it provided values close to those produced by a laboratory-grade integrated sphere spectrophotometer. Dentists should assess the radiant emittance of their light-curing units to ensure optimal curing in photoactivated, resin-based materials.
ABSTRACT
Objectives@#This study investigated the effects of physically damaged and resin-contaminated tips on radiant emittance, comparing them with new undamaged, non-contaminated tips using 3 pieces of spectrophotometric laboratory equipment. @*Materials and Methods@#Nine tips with damage and/or resin contaminants from actual clinical situations were compared with a new tip without damage or contamination (control group). The radiant emittance was recorded using 3 spectrophotometric methods: a laboratory-grade thermopile, a laboratory-grade integrating sphere, and a portable light collector (checkMARC). @*Results@#A significant difference between the laboratory-grade thermopile and the laboratory-grade integrating sphere was found when the radiant emittance values of the control or damaged/contaminated tips were investigated (p 0.05). Regardless of the method used to quantify the light output, the mean radiant emittance values of the damaged/contaminated tips were significantly lower than those of the control (p < 0.05). The beam profile of the damaged/ contaminated tips was less homogeneous than that of the control. @*Conclusions@#Damaged/contaminated tips can reduce the radiant emittance output and the homogeneity of the beam, which may affect the energy delivered to composite restorations.The checkMARC spectrophotometer device can be used in dental offices, as it provided values close to those produced by a laboratory-grade integrated sphere spectrophotometer. Dentists should assess the radiant emittance of their light-curing units to ensure optimal curing in photoactivated, resin-based materials.
ABSTRACT
Introdução: As estrias ocorrem pelo rápido estiramento da pele, típico da gestação. Tratamentos tópicos vêm sendo estudados para prevenir seu aparecimento. Objetivo: avaliar a eficácia preventiva de estrias de uma formulação tópica. Métodos: Avaliaram-se 75 gestantes entre 18 e 40 anos. A área tratada foi o abdome, e a área-controle, a face interna do antebraço, com e sem o produto de teste, avaliando-se: maciez, hidratação e elasticidade além de medidas biofísicas para elasticidade e hidratação. Resultados: Das 75 gestantes, 52 finalizaram o estudo; destas, 9,6% apresentaram estrias na área abdominal tratada. Houve melhora significativa em os todos parâmetros clínicos avaliados (p<0,001). Nas medidas instrumentais, houve melhora significativa da hidratação e elasticidade na área abdominal, superior à da área-controle; quanto ao antebraço, também houve melhora significativa da área tratada em relação ao controle para ambos os parâmetros avaliados (p = 0,001). Comentários e Conclusão: A associação dos ingredientes da formulação (ácido láctico e lactato de sódio em emulsão com triglicerídeos do ácido caprílico e cáprico) foi capaz de aumentar os níveis de elasticidade e hidratação, reduzindo a incidência de estrias em comparação ao relatado em literatura.
Introduction: Stretch marks occur due to the rapid stretching of the skin, which is typical in pregnancy. Several topical treatments to prevent them have been studied.Objective: To evaluate the effectiveness of a topical formulation (lactic acid and sodium lactate in an emulsion with caprylic and capric acids' triglycerides) in the prevention of stretch marks.Methods: Seventy-five pregnant women aged 18-40 were assessed. The treated area was the abdomen and the control area was the inner forearm, with and without the application of the tested product. Softness, hydration, and elasticity and biophysical measurements for hydration and elasticity were evaluated. Results: Of the 52 women who completed the study, 9.6% presented stretch marks in the treated abdominal area. There was a significant improvement in all clinical parameters assessed (p < 0.001). There was a significant improvement compared the control area in the instrumental measurements of hydration and elasticity in the abdomen. A significant improvement was also verified in the treated forearm area compared to the untreated forearm area for both parameters evaluated (p = 0.001).Conclusions: The formulation improved the skin's elasticity and hydration, reducing the striae incidence more than previously reported in the literature.
ABSTRACT
Avaliar os efeitos de um preparado injetavel mensal contendo enantato de noretisterona 50 mg + valerato de estradiol 5 mg, sobre os niveis pressoricos e...
Subject(s)
Humans , Female , Adult , Middle Aged , Injections, Intramuscular/methods , Menopause , Hormone Replacement Therapy/methods , Hypertension/etiology , Norethindrone , Time FactorsABSTRACT
Em estudo randomizado, duplo-cego controlado com placebo avaliou-se os efeitos da terapia estrogênica oral e do exercício físico aeróbio supervisionado sobre parâmetros de risco cardiovascular na pós-menopausa. Ao longo de 6 meses, 24 mulheres histerectomizadas saudáveis na pós-menopausa receberam valerato de estradiol 1 mgdia por via oral contínuo ou placebo, e realizaram treinamento físico aeróbio supervisionado ou permaneceram sedentárias. /In a double-blinded placebo controlled study the effects of oral estrogenic therapy and aerobic exercise training program on some cardiovascular risk factors in postmenopausal women were evaluated. During 6 months, 24 hysterectomized healthy postmenopausal women, were randomly assigned to receive continuous oral estradiol valerate 1 mg/day or placebo, and were enrolled in a supervised aerobic exercise training program or remained sedentary...
Subject(s)
Humans , Female , Adult , Middle Aged , Cardiovascular Diseases/prevention & control , Estrogen Replacement Therapy , Postmenopause , Double-Blind Method , Exercise , Physical Fitness , Risk FactorsABSTRACT
Objetivo: O objetivo deste estudo foi avaliar os efeitos de uma associacao estro-progestogenica contendo valerato de estradiol associado a progestogeno derivado de 19-nortestosterona sobre os niveis presssoricos, perfil lipidico e outros...
Subject(s)
Humans , Female , Adult , Middle Aged , Hypertension/therapy , Premenopause , Hormone Replacement Therapy/methods , Estradiol , Premenopause/metabolism , Arterial Pressure , ProgesteroneABSTRACT
O objetivo desta revisao, foi avaliar as informacoes da literatura, junto as observacoes dos autores, para analisar os aspectos relevantes que envolvem o periodo do climaterio, em relacao...
Subject(s)
Humans , Female , Climacteric , Genital Diseases, Female/prevention & control , Hormone Replacement Therapy , Genital Diseases, Female/etiologyABSTRACT
O presente estudo teve como objetivo avaliar clinica e laboratorialmente mulheres climatericas portadores de Artrite Reumatoide (AR) submetidas a 3 diferentes esquemas de Terapia de Reposicao Hormonal (TRH). Foram avaliadas 37 mulheres climatericas com idades variando entre 39 e 61 anos (media etaria de 51,6 anos), portadoras de AR recebendo 3 diferentes esquemas de TRH por via oral. As mulheres foram divididas em 3 grupos de acordo com os esquemas de TRH: Grupo A- 9 mulheres utilizaram a associacao 17beta estradiol 2 mg/dia + acetato de noretisterona 1 mg/dia em esquema continuo; Grupo B- 6 mulheres histerectomizadas utilizaram...