This study evaluated the irradiance of curing units through core and veneered hot-pressed ceramics as well as the transmittance of these materials. Discs of 0.7, 1.4 and 2 mm in thickness of Empress (EMP) and Empress Esthetic (EST), and 0.8 (n=5) and 1.1 mm (n=5) thickness of Empress 2 (E2) were obtained. For E2, two of the 0.8-mm-thick discs were covered with dentin (1.2-and 1.4-mm-thick) and two with dentin + enamel (1.5-mm-thick). The 1.1-mm-thick specimens were submitted to the same veneering procedures. Specimens were evaluated by UV-Vis transmittance analysis and the percentage of transmittance was recorded. Irradiance through each specimen was evaluated with a quartz-tungsten-halogen (QTH), used in continuous or intermittent exposure modes, or a blue lightemitting diode (LED). Data were analyzed by Dunnett's test, ANOVA and Tukey's test at 5% significance level. Exposure through ceramic decreased the irradiance for all ceramics. Irradiance through EST was significantly higher than through EMP. For E2, reduction in irradiance depended on the core and/or veneer thickness. The QTH intermittent mode showed higher irradiance than the continuous mode, and both showed higher irradiance than LED. The ceramic significantly influenced irradiance and transmittance, which were found to decrease with the increase in thickness.

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IntroductionDifferences in psychiatry training vary substantially across Europe. Such organisations as the European Federation of Psychiatry Trainees (EFPT), the European College of Neuropsychopharmacology, and the European Psychiatry Association, have committed to offer international experiences based on the premise that it could foster international collaboration, aid early career professionals to progress professionally and spark discussion regarding different practices across Europe.To date, there are no studies that focus on the exchange experience in mental health professionals.ObjectivesWe present the synthesis of the first seven years answers from 2012 to 2019 to the post-exchange online evaluation form, which trainees had to fill in in order to receive an attendance certificate.MethodsThe present study analysed the answers of 182 psychiatry trainees or recent graduates who took part in the EFPT exchange program during 2012 and 2019 and filled in the internet-based evaluation form. The inclusion criteria were currently in training or recently finished training as a psychiatrist in Europe and filling in the questionnaire. The exclusion criterion was participation in the EFPT exchange program for the second or subsequent time.All trainees were systemically asked to complete the online evaluation form after the exchange period. The form includes sociodemographic, training in host country-related, and exchange experience-related questions. Experience measures were evaluated using the 4-point Likert scale. Data was anonymized before the analysis. The study followed the principles of the Declaration of Helsinki.ResultsFrom the 198 individuals who filled the questionnaire, 182 were involved in final analyses. The majority of participants were females in the second half of their training. The average age was 29 years. The largest number of applicants were from Turkey, whereas the United Kingdom hosted the most participants. One-third of the participants had previous international exchange experience.Most trainees were exposed to both outpatient and inpatient treatment settings and were involved in educational or research activities. 96.7% of participants indicated that they were satisfied or very satisfied with the experience, 95.6% said that the exchange was useful or very useful, and 98.9% were likely or very likely to recommend exchange to colleagues. A description of trainees and exchange placements is presented in a table (couldn’t be uploaded).ConclusionsTo our knowledge, this study is the first to assess the experience of psychiatry trainees who went on exchange during their professional training. Vast majority of trainees were satisfied with their exchange, thought it would be useful for their clinical practice and would recommend it to their colleagues. These findings are in line with other studies that examined medical exchange experiences .Disclosure of InterestNone Declared