CLSM assessment of tubule penetration and bacterial leakage evaluation of two resin-based sealer

AIM: The aims of this study were to assess the penetration of two endodontic sealers (salicylate and epoxy resin-based sealers) into dentinal tubules using CLSM; and to evaluate the bacterial leakage of roots filled with the same sealers associated with gutta-percha. MATERIAL AND METHODS: For sealer penetrability assessment, thirty bovine roots were instrumented and divided into three groups: AHP: EDTA + filling with AH Plus and gutta-percha (n=10), MTAF: EDTA + filling with MTA Fillapex and gutta-percha (n=10), control group: canals were not irrigated with EDTA and were filled with gutta-percha and AH Plus (n=5) or MTA Fillapex (n=5). Rhodamine B was added to the sealers in order to provide adequate fluorescence. The roots were transversely sectioned 3mm from the apex to enable CLSM analysis. Leakage was evaluated for turbidity of the broth in a split chamber model system for 30 days, using Enterococcus faecalis as a microbial marker. Thirty roots were instrumented and divided in four grupos: AHP: filling with AH Plus and gutta-percha (n=10); MTAF: filling with MTA Fillapex and gutta-percha (n=10); positive control: filling with gutta-percha without sealer (n = 5); negative control: sealing with cyanoacrylate to test the seal of the system (n = 5). RESULTS: The medians for dentinal tubule penetration were 6.8% (AHP) and 6.6% (MTAF) (P = 0.82). The average time for bacterial leakage was 8 days in both experimental groups (P = 0.79). CONCLUSION: MTA Fillapex and AH Plus presented similar behavior regarding dentinal tubule penetration and bacterial leakage.

Obstetricians' knowledge of periodontal disease as a potential risk factor for preterm delivery and low birth weight

There is little information about the knowledge and attitudes of physicians regarding oral care. This study aimed to assess the knowledge and attitudes of obstetricians about the relationship between periodontal disease and preterm/low birth weight. A questionnaire was emailed to members of the Brazilian Federation of Gynecology and Obstetrics (FEBRASGO). The questionnaire elicited both personal information and knowledge and attitudes regarding the relationship between periodontal diseases and preterm labor. A total of 875 obstetricians responded to the questionnaire. The majority of respondents were female (54.1 percent), resided in the Southeast (45.6 percent), worked in both the public and private sectors (61.4 percent), and had over 15 years of experience in obstetrics (48.9 percent). A large proportion of obstetricians (93.4 percent) stated that bacteria were associated with periodontal disease, and 94 percent reported that periodontitis was a condition more severe than gingivitis. In total, over 80 percent of participating obstetricians reported smoking, preeclampsia, bacterial vaginosis and periodontal disease as risk factors or possible risk factors for preterm birth or low birth weight. A correlation between the experience of the obstetricians and referral of their patients for dental examinations (p < 0.001) was observed. Also, obstetricians who had had their own dental visits more recently were more likely to recommend the same for their patients (p < 0.001). It is concluded that, although obstetricians were aware of the association between gingival inflammation and adverse obstetric outcomes, the attitudes of these professionals were not in agreement with their apparent knowledge regarding periodontal diseases and their possible repercussions.

Participação das mulheres na graduação da Faculdade de Odontologia da Universidade Federal do Rio Grande do Sul / Women in school of dentistry, Federal University of Rio Grande do Sul

Introdução: Em 1866, na Universidade de Ohio, graduou-se a primeira mulher da história da Odontologia. A inserção da mulher na Odontologia ocorreu de forma lenta e gradual, acompanhando o desenvolvimento histórico e cultural da sociedade. Um dos fatores que faz com que a mulher opte pela carreira odontológica é o fato de poder exercer o trabalho de forma autônoma. Objetivo: Conhecer o crescimento da participação da mulher na Faculdade de Odontologia da Universidade Federal do Rio Grande do Sul (FO-UFRGS). Materiais e Métodos: Foram analisados os documentos que continham todos os formandos da FO-UFRGS do período de 1900-2010. Resultados: Em 1904, graduaram-se as três primeiras estudantes femininas. No inicio da década de 60, verificou-se um aumento crescente na participação da mulher atingindo taxa de 45%. No ano de 2010, as mulheres constituem 68% dos acadêmicos da Faculdade. Conclusões: Podemos concluir que a mulher iniciou cedo sua participação na Odontologia gaúcha. Deste período até os nossos dias tem havido um paulatino aumento desta participação, culminando com o seu predomínio numérico em relação ao sexo masculino.

Introduction: In 1866, in the University of Ohio graduated the first woman in the history of Dentistry, The inclusion of women in dentistry has occurred slowly and gradually, following the historical and cultural development of society. One factor that makes women choose the dental career is being able to perform the work autonomously. Objective: Knowing the growth of women's participation in the Faculty of Dentistry, Federal University of Rio Grande do Sul (UFRGS-FO). Materials and Methods: The documents that contained all of the graduates of FO-UFRGS, in the period between 1900 and 2010, were analyzed. Results: In 1904, graduated the first three female students. In the early 60s, there was a steady increase in women's participation rate reached 45%. In 2010, women constitute 68% of the students of the Faculty. Conclusions: We conclude that the woman started early on their participation in dentistry in the State. From this period until the present day there has been a gradual increase in this participation, culminating in their numerical predominance in relation to males.