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BackgroundViral hepatitis B (VHB) is an occupational risk for dentists. It is necessary that dental students start clinical practice immunized with the vaccine, response monitored and informed about the means of transmission of the disease. Rarely, there are studies, which evaluate concomitantly knowledge of these academics and their vaccine situation.ObjectivesTo evaluate the knowledge about Hepatitis B, the vaccine situation and the immunization status of dental students and to investigate the probable correlation between the status of immunization, vaccination membership and adherence to the test of seroconversion and associated factors.Patients and Methods189 students from the dentistry course at the Federal University of Piaui (UFPI) who attended from the 3rd to 9th period were invited to participate in the research. Their knowledge about HBV, attitude regarding protection and their vaccine situation were assessed through a self-administered form. Antibodies against surface antigens of Hepatitis B virus (Anti-HBs) and against the antigens of the virus nucleous of Hepatitis B (Anti-HBc total) were measured qualitatively using the enzyme-linked immunosorbent assay (ELISA).ResultsOf the 179 students surveyed, 58.1% knew about the degree of virulence of the Hepatitis B virus (HBV). As to the means of transmission, 98.3% considered blood transmission, 82.6% plates and cutlery, 15.6% cough and 12.3% vertical transmission. Most students (87.4%) knew that they should take 3 doses of the vaccine and 62.2% completed the immunization schedule. A minority of students (48.6%) knew the about the Anti-HBs test and 5.6% took the test. Among the students who reported having taken three doses of the vaccine, 12.5% were not seroconverted. There was no significant correlation between the variables.ConclusionsDental academics were unsure about the means of infection and prevention against HBV. Many of them had not completed the immunization scheme and did not have the test of seroconversion. The serological analysis revealed unprotection, even after students completed the vaccination schedule.

Background Developmental enamel defects (DDE) represent one of the prevalent oral problems in childhood; however, few studies have evaluated its impact on quality of life in the children's own perception. Aim To evaluate the DDE impact on quality of life of 5‐year‐old children. Methods This cross‐sectional observational study assessed 566 children aged 5 years old, in Teresina, Piauí, Brazil, according to their self‐perceptions. Children answered the Pediatric Quality of Life Inventory™ Version 4.0 and Oral Health Scale. The dmft index, modified DDE index and Foster and Hamilton criteria were used to diagnose dental caries, DDE and malocclusion, respectively. A single examiner performed the clinical examination. Descriptive analyses and Poisson regression with robust variance were performed. Results The prevalence of DDE was 33.7%. For children's self‐reports, the presence of DDE had a negative association with oral health‐related quality of life (OHRQoL; PR 1.09, 95% CI 1.02‐1.15). Enamel hypoplasia had a negative impact on the physical function (PR 1.05; 95% CI 1.01‐1.10) and oral health (PR 1.06, 95% CI 1.01‐1.11) domains. Diffuse opacity had a negative impact on the social aspect (PR 1.09, 95% CI 1.02‐1.18). Conclusions Enamel defects had a negative impact on OHRQoL according to the self‐reports of the children.

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INTRODUCTION: Many people suffering from mental disorders fail to adequately perform self-care, especially in relation to personal hygiene and in particular to oral hygiene. For these individuals, the prevention and ongoing clinical monitoring are essential. OBJECTIVE: To investigate the oral diseases that most affect patients with mental disorders attended in the Dental College of the Federal University of Piauí (UFPI). METHODOLOGY: Patients treated during the 2nd half of 2011 and 1st half of 2012 were examined. The DMFT index was used for evaluation of dental caries and the CPI index for periodontal evaluation. The statistical analyzes were performed with SPSS (Statistical Package for the Social Sciences), version 18.0, using a descriptive statistics to determine averages, standard deviations and frequencies. RESULT: 67.50% of the 40 patients had contact with the surgeon dentist for over one year, 95% performed their own oral hygiene and 70% did not use dental floss. The average of DMFT was 14.18. Of the patients, 49.13% needed of restorations of one surface and 60% needed dental prosthesis. Moreover, 33.75% of sextants evaluated had periodontal pockets. CONCLUSION: It can be noticed that patients with mental illness have a high risk of developing oral disorders, however, few carriers visite a dental professional regularly. In addition, the delay to seek treatment and lack of staff training, lead to solutions often crippling.