Do whole-body vibration exercise and resistance exercise modify concentrations of salivary cortisol and immunoglobulin A?

A single bout of resistance exercise (RE) induces hormonal and immune responses, playing an important role in a long-term adaptive process. Whole-body vibration (WBV) has also been shown to affect hormonal responses. Evidence suggests that combining WBV with RE may amplify hormonal and immune responses due to the increased neuromuscular load. Therefore, the aim of this study was to evaluate salivary cortisol (Scortisol) and salivary IgA (SIgA) concentrations following a RE session combined or not with WBV. Nine university students (22.9 ± 5.1 years, 175.8 ± 5.2 cm, and 69.2 ± 7.3 kg) performed five sets of squat exercise (70% one-repetition-maximum) combined (R+V30) or not (R) with WBV at 30 Hz. Saliva samples were obtained before and after exercise. Subjects also rated their effort according to the Borg CR-10 scale (RPE). Data were analyzed by a mixed model. RPE was higher after R+V30 (8.3 ± 0.7) compared to R (6.2 ± 0.7). However, Scortisol (pre: 10.6 ± 7.6 and 11.7 ± 7.6, post: 8.3 ± 6.3 and 10.2 ± 7.2 ng/mL for R and R+V30, respectively) and SIgA concentrations (pre: 98.3 ± 22.6 and 116.1 ± 51.2, post: 116.6 ± 64.7 and 143.6 ± 80.5 µg/mL for R and R+V30, respectively) were unaffected. No significant correlations were observed between Scortisol and RPE (r = 0.45, P = 0.22; r = 0.30, P = 0.42, for R and R+V30, respectively). On the basis of these data, neither protocol modified salivary cortisol or IgA, although RPE was higher after R+V30 than R

Patients' views on dentists' ability to manage medical crises – results of focus group research

Background: Australia faces an ageing population which is more medically complicated than in years past, and it is important that we meet public expectations of management of medical emergencies in the dental clinic. No research before has examined in depth the public perception of dentists’ medical emergency management. Aim: To qualitatively assess the publics' perception of medical emergencies in dentistry and their expectations of medical emergency management by dentists. Methods: 12 members of the public associated with a university clinic participated in two focus groups of six persons, where semi-structured discussions were carried out, audio recorded and transcribed, and subsequently underwent comprehensive thematic analysis. Results: Key findings included a high expectation of dentists' general medical knowledge, as well as potential concern regarding a lack of routine medical assessment prior to undertaking dental treatment. Conclusions: Participants expected dentists to be highly proficient at managing medical crises and support the concept of medical emergency management certification for dentists

Concentração de fluoreto em arroz, feijão e alimentos infantis industrializados

OBJETIVO: Determinar a concentração de fluoreto na refeição brasileira típica (arroz e feijão) e em alimentos infantis industrializados e estimar suas contribuições para fluorose dental. MÉTODOS: Os alimentos foram adquiridos de supermercados das cidades de Piracicaba e Campinas, SP, Brasil. Os alimentos infantis industrializados foram comprados em 2001 e o arroz e feijão em 2003, e imediatamente analisados. Foram analisadas três marcas de arroz, três de feijão e 36 amostras de alimentos infantis divididos em cinco grupos: prontos para o consumo; mingaus; alimentos formulados; leites em pó e outros alimentos. No arroz e feijão, foram determinadas as concentrações de fluoreto nas sementes "in natura" e após cozimento com água destilada ou fluoretada (0,7 ppm). Todas as análises de fluoreto foram feitas com eletrodo específico. Considerou-se 0,07 mg/kg/dia como a dose limite de exposição a fluoreto para risco de fluorose. RESULTADOS: A concentração de fluoreto encontrada nos grãos de arroz e feijão foi baixa. Porém, a concentração aumentou 100-200 vezes após cozimento em água fluoretada e mesmo assim, foi menor que a encontrada em alguns alimentos industrializados. Uma refeição com arroz e feijão preparada com água fluoretada seria responsável por 29% da dose limite de ingestão de fluoreto em termos de fluorose aceitável; a contribuição de alguns alimentos industrializados atingiria 45%. CONCLUSÕES: A alimentação típica brasileira, mesmo preparada com água fluoretada, é mais segura em termos de risco de fluorose dental que alguns alimentos infantis industrializados

Do whole-body vibration exercise and resistance exercise modify concentrations of salivary cortisol and immunoglobulin A?

A single bout of resistance exercise (RE) induces hormonal and immune responses, playing an important role in a long-term adaptive process. Whole-body vibration (WBV) has also been shown to affect hormonal responses. Evidence suggests that combining WBV with RE may amplify hormonal and immune responses due to the increased neuromuscular load. Therefore, the aim of this study was to evaluate salivary cortisol (Scortisol) and salivary IgA (SIgA) concentrations following a RE session combined or not with WBV. Nine university students (22.9 ± 5.1 years, 175.8 ± 5.2 cm, and 69.2 ± 7.3 kg) performed five sets of squat exercise (70% one-repetition-maximum) combined (R+V30) or not (R) with WBV at 30 Hz. Saliva samples were obtained before and after exercise. Subjects also rated their effort according to the Borg CR-10 scale (RPE). Data were analyzed by a mixed model. RPE was higher after R+V30 (8.3 ± 0.7) compared to R (6.2 ± 0.7). However, Scortisol (pre: 10.6 ± 7.6 and 11.7 ± 7.6, post: 8.3 ± 6.3 and 10.2 ± 7.2 ng/mL for R and R+V30, respectively) and SIgA concentrations (pre: 98.3 ± 22.6 and 116.1 ± 51.2, post: 116.6 ± 64.7 and 143.6 ± 80.5 µg/mL for R and R+V30, respectively) were unaffected. No significant correlations were observed between Scortisol and RPE (r = 0.45, P = 0.22; r = 0.30, P = 0.42, for R and R+V30, respectively). On the basis of these data, neither protocol modified salivary cortisol or IgA, although RPE was higher after R+V30 than R

Profile Of The Orthodontist Practicing In The State Of São Paulo - Part 1

Orthodontics is no different from other sciences to the extent that it is a field in constant evolution and development. Nowadays, given the availability of a wide range of materials and biomechanical resources, as well as the development of new diagnostic capabilities, new methods to manage orthodontic treatment have emerged. Furthermore, due to the proliferation of postgraduate programs, it is increasingly important to gain insight into the profile of these specialists and the resources they use. OBJECTIVE: Examine the profile of orthodontists practicing in the State of São Paulo. The questions were prepared to evaluate different aspects of orthodontic practice. METHODS: A questionnaire was sent to 2.414 specialists in Orthodontics and Dentofacial Orthopedics registered with the Regional Board of Dentistry of São Paulo State (CRO-SP). To assess the association between qualitative variables, the Chi-square association test was employed at 5% significance level. RESULTS: Five hundred ninety-three (24.65%) questionnaires were completed and returned. The sample profile consisted of males (54.3%), aged between 41 and 50 (40.5%), who had been registered with the São Paulo Regional Board of Dentistry (CRO-SP) for 6 to 10 years (29.3%). The three most widely mentioned cephalometric analyses were standard USP (71.5%), McNamara (59.2%) and Ricketts (52.8%). CONCLUSIONS: Based on a statistical analysis of the data one can conclude that the Straight-Wire technique was used most often (74.5%), and this technique is associated with orthodontists who have been specialists for less than 10 years. Most people surveyed (52.4%) routinely make use of functional orthopedic resources in their daily practice. © 2012 Dental Press Journal of Orthodontics.17622.e122.e6Andrade, M., A revolução silenciosa (1999) Rev ABO Nac., 7 (2), pp. 198-201Brito Jr., V.S., Ursi, W.J.S., O aparelho pré-ajustado: Sua evolução e suas prescrições (2006) Rev Dental Press Ortod Ortop Facial., 11 (3), pp. 104-156Capelozza Filho, L., Silva Filho, O.G., Ozawa, T.O., Cavassan, A.O., Individualização de braquetes na técnica straight-wire: Revisão de conceitos e sugestão de indicações para uso (1999) Rev Dental Press Ortod Ortop Facial., 4 (4), pp. 87-106Cavalcanti, A.L., Melo, T.R.N.B., Barroso, K.M.A., Souza, F.E.C., Maia, A.M.A., Silva, A.L.O., Perfil da pesquisa científica em Odontologia realizada no Brasil (2004) Pesq Bras Odontoped Clin Integr., 4 (2), pp. 99-104Gottlieb, E.L., Nelson, A.H., Vogels, D.S., 1990 JCO study of orthodontic diagnosis and treatment procedures. 1. Results and trends (1991) J Clin Orthod., 25 (3), pp. 145-156Gottlieb, E.L., Nelson, A.H., Vogels, D.S., 1996 JCO Study of orthodontic diagnosis and treatment procedures. Part 1. Results and trends (1996) J Clin Orthod., 30 (11), pp. 615-629Keim, R.G., Gottlieb, E.L., Nelson, A.H., Vogels, D.S., 2002 JCO study of orthodontic diagnosis and treatment procedures. Part 1. Results and trends (2002) J Clin Orthod., 36 (10), pp. 553-568Mazzieiro, E.T., Braquetes do sistema Straight-Wire: O que eles realmente significam? (2005) J Bras Ortodon Ortop Facial., 10 (58), pp. 449-459Mendonça, S., (2004) Ortodontia nos tempos globalizados., , São Paulo: Ed. Univ. GuarulhosMurray, J.J., Better opportunities for women dentists: A review of the contribution of women dentists to the workforce (2002) Br Dent J., 192 (4), pp. 191-196Oppenheim, A.M., (1993) Questionnaire design, interviewing and attitude measurement., , 1st ed. London: PinterPantaleão, A.M., (2007) Estudo da prática ortodôntica no Distrito Federal [dissertação]., , Campinas (SP): São Leopoldo MandicPissette, A.P., Feres, M.A.L., II Estudo sobre a prática ortodôntica no Brasil-1995 (1997) Ortodontia., 30 (3), pp. 7-15Queiroz Jr., G., Feres, M.A.L., Estudo sobre a prática ortodôntica no Brasil (1994) Ortodontia., 27 (3), pp. 67-77Soares, E.D., Carvalho, A.S., Barbosa, J.A., Relação comercial do ortodontista brasileiro com o seu paciente, natureza obrigacional dos serviços prestados e riscos do tratamento ortodôntico (2007) Rev Dental Press Ortod Ortop Facial., 12 (1), pp. 94-101Souza, C.E.V., Feres, M.A.L., Petrelli, E., Quem somos e como estamos em relação à Ortodontia contemporânea no Brasil: Terceiro estudo (2003) J Bras Ortodon Ortop Facial., 8 (47), pp. 401-418Vilella, O.V., O desenvolvimento da Ortodontia no Brasil (2007) Rev Dental Press Ortod Ortop Facial., 12 (6), pp. 131-15

The influence of sex and ovarian hormones on temporomandibular joint nociception in rats

The aim of this study was to investigate the influence of sex and ovarian hormones on formalin- and glutamate-induced temporomandibular joint (TMJ) nociception in rats. The influence of sex and ovarian hormones on the nociceptive behavior induced by formalin or glutamate was virtually the same. The nociceptive behavior of males was similar to that of females in the proestrus phase of the estrous cycle but was significantly lower than that in the diestrus phase. Since the serum level of estradiol but not of progesterone was significantly higher in the proestrus than in the diestrus phase, these data suggest that females with lower endogenous serum level of estradiol have an exacerbation of TMJ nociception. The nociceptive behavior of ovariectomized rats was similar to that of diestrus females and significantly greater than that of proestrus females. Although the administration of estradiol or progesterone in ovariectomized females significantly reduced TMJ nociception, the combination of both hormones did not increase the antinociceptive effect induced by each of them. These findings suggest that estradiol and progesterone decrease TMJ nociception in an independent way. Perspective: We report that ovarian hormones have an antinociceptive effect on the TMJ formalin and glutamate nociceptive behavior models. Therefore, the greater prevalence and severity of TMJ pain in women of reproductive age may be a consequence of hormonal fluctuation during the reproductive cycle, in that during low endogenous estradiol serum level TMJ pain sensitivity is increased, enhancing the risk of females experiencing TMJ pain. (C) 2008 by the American Pain Society.9763063

Brazilian Dentists' Attitudes About Medical Emergencies During Dental Treatment

The main objective of this study was to evaluate the prevalence of emergencies in dental practices and the preparedness and the training experience in cardiopulmonary resuscitation (CPR) of Brazilian dentists in dealing with emergencies. The volunteer participants in the study were 498 Brazilian dentists who were present at the 27th International Congress of Dentistry in Sao Paulo. The most prevalent emergency was presyncope (reported by 54.20 percent of respondents), followed by orthostatic hypotension (44.37 percent), moderate allergic reactions (16.86 percent), hypertensive crisis (15.06 percent), asthma (15.06 percent), syncope (12.65 percent), angina (6.82 percent), convulsion (6.22 percent), hypoglycemia (5.62 percent), hyperventilation crisis (5.22 percent), choking (2.20 percent), and cerebrovascular accident (0.8 percent). Anaphylaxis, myocardial infarction, and cardiac arrest were the rarest emergencies, reported by only 0.4, 0.2, and 0.2 percent of dentists, respectively. Only 41 percent of the dentists judged themselves capable to diagnose the cause of an emergency during a dental visit. The majority responded that they would be capable of performing initial treatment of presyncope, syncope, orthostatic hypotension, convulsion, and choking. However, most of them felt unable to treat anaphylaxis, myocardial infarction, or cardiac arrest. Further, the majority felt unable to perform CPR or undertake an intravenous injection. It was concluded that the most prevalent medical emergencies in dental practice of Brazilian dentists are presyncope and orthostatic hypotension. The occurrence of life-threatening medical emergencies like anaphylaxis, myocardial infarction, cardiac arrest, and cerebrovascular accident is rare. Brazilian dentists are not fully prepared to manage medical emergencies and have insufficient experience training in CPR.74666166

The influence of sex and ovarian hormones on temporomandibular joint nociception in rats

CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOThe aim of this study was to investigate the influence of sex and ovarian hormones on formalin- and glutamate-induced temporomandibular joint (TMJ) nociception in rats. The influence of sex and ovarian hormones on the nociceptive behavior induced by formalin or glutamate was virtually the same. The nociceptive behavior of males was similar to that of females in the proestrus phase of the estrous cycle but was significantly lower than that in the diestrus phase. Since the serum level of estradiol but not of progesterone was significantly higher in the proestrus than in the diestrus phase, these data suggest that females with lower endogenous serum level of estradiol have an exacerbation of TMJ nociception. The nociceptive behavior of ovariectomized rats was similar to that of diestrus females and significantly greater than that of proestrus females. Although the administration of estradiol or progesterone in ovariectomized females significantly reduced TMJ nociception, the combination of both hormones did not increase the antinociceptive effect induced by each of them. These findings suggest that estradiol and progesterone decrease TMJ nociception in an independent way. We report that ovarian hormones have an antinociceptive effect on the TMJ formalin and glutamate nociceptive behavior models. Therefore, the greater prevalence and severity of TMJ pain in women of reproductive age may be a consequence of hormonal fluctuation during the reproductive cycle, in that during low endogenous estradiol serum level TMJ pain sensitivity is increased, enhancing the risk of females experiencing TMJ pain.The aim of this study was to investigate the influence of sex and ovarian hormones on formalin- and glutamate-induced temporomandibular joint (TMJ) nociception in rats. The influence of sex and ovarian hormones on the nociceptive behavior induced by formalin or glutamate was virtually the same. The nociceptive behavior of males was similar to that of females in the proestrus phase of the estrous cycle but was significantly lower than that in the diestrus phase. Since the serum level of estradiol but not of progesterone was significantly higher in the proestrus than in the diestrus phase, these data suggest that females with lower endogenous serum level of estradiol have an exacerbation of TMJ nociception. The nociceptive behavior of ovariectomized rats was similar to that of diestrus females and significantly greater than that of proestrus females. Although the administration of estradiol or progesterone in ovariectomized females significantly reduced TMJ nociception, the combination of both hormones did not increase the antinociceptive effect induced by each of them. These findings suggest that estradiol and progesterone decrease TMJ nociception in an independent way97630638CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOsem informaçãosem informaçã