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Introduction:Stem cells (SCs) enabled great advances in different health fields, including Dentistry. Objective: To investigate the knowledge of last year Dentistry undergraduate students regarding SCs and its applications. Material and methods: A questionnaire with open-ended questions was applied to the students, followed by qualitative-quantitative analysis involving the clustering of the answers. Results: The majority of students (70%) defined SCs adequately, only half of the interviewees (48.8%) were unable to classify SCs and just 26.2% classified it correctly. On the question about SCs from dental tissues, 77.5% reported it was possible and 70.9% knew which tissues could be used. The main source of knowledge was the media (36.4%), followed by the University (26.6%); 88.5% stated that the topic was only addressed in the first year of the course. Consequently, only 7.5% reported being capable of answering questions about it. Conclusion:The students are not receiving enough information about the topic.
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Introduction: The Human Genome Project (HGP) has allowed for advances in diagnosis and prevention of diseases. Objective: The aim of this study was to investigate the knowledge of undergraduates from the Federal University of Santa Catarina, regarding HGP and its applicability. Material and methods: Thirty-one students were interviewed by using a questionnaire with open questions, followed by qualitative and quantitative analysis through answers' grouping. Results: Only 4.5% did not know HGP, while most of them (83%) demonstrated knowledge gained from the media. Only 21% cited the undergraduate program as a source of information, 56% recognized advances in disease prevention and 81% reported applicability in Dentistry. 97% students would give blood samples for research, 28% reported concern about misuse of this information, while 31% did not report any disadvantage. Conclusion: It may be concluded that the students have some knowledge on HGP. However, it is not widely discussed during course, because the media was the main source of information.
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AIM: The aim of this study was to compare the coronal microleakage of restorative materials used between sessions of endodontic treatment in primary teeth. MATERIALS AND METHODS: Forty healthy primary canines were chosen and randomly allocated to four groups: Group 1 - Cimpat Branco ® (n = 10), Group 2 - Bioplic ® (n = 10), Group 3 - Maxxion R ® glass ionomer cement (n = 10), and Group 4 (control) - Z350 ® composite resin (n = 10). Class V cavities were created and fillings carried out following the manufacturer's instructions. The teeth were submitted to thermocycling, sealed, and immersed in 0.5% basic fuchsin solution for 24 h. The teeth were split along their long axis in the vestibulolingual direction and the tooth-restorative material interface was photographed. The percentage of microleakage was calculated using the ImageJ program. Data were analyzed using the analysis of variance (ANOVA) F-test and Bonferroni's t-test, with a 5% level of significance. RESULTS: The following mean percentages of microleakage were found: Group 1 = 16.08%, Group 2 = 46.98%, Group 3 = 47.93%, and Group 4 = 11.03%. Statistically, significant differences were found in the comparison of Groups 1 and 4 to Groups 2 and 3. CONCLUSION: Cimpat Branco ® had a lower percentage of microleakage in comparison to Bioplic ® and Maxxion R ® glass ionomer cement.
