Objective: Recent studies have shown relationship between poor oral health in pregnant women and adverse pregnancy outcomes. So it was decided to assess the knowledge of interns who will be the future practitioners regarding management of dental needs of pregnant patients. Material and Methods: A cross-sectional questionnaire survey was conducted among 380 interns from eight dental colleges in Karnataka. Questionnaire comprised of 25 knowledge based questions and fi ve questions regarding their training, number of pregnant patients treated by them and their confi dence level in dental management of pregnant patient. Excel spread sheet was used for mathematical calculations. Results: More than 80% of the interns had knowledge about usage of NSAIDS (92%) antibiotics (82%) and local anesthetic (80%). Conversely many did not know about the FDA category of drugs to be used (80%) and safety of dental radiographs (89%) in pregnant patients. Results also showed lack of confi dence in interns to provide dental care to pregnant patients. Conclusion: There is defi nitive need to improve the knowledge and thus the confi dence levels of the interns.
Purpose:The purpose of this in vitro research project was to evaluate and compare the wear behavior of human tooth enamel opposing monolithic zirconia and other different ceramic restorative materials and also to observe the tetragonal to monoclinic phase transformation in zirconia-based ceramics that may occur while simulating wear occurring at room temperature in a wet environment.Materials and Methods:A total of sixty samples were prepared for this study. Fifteen discs of glazed zirconia, 15 discs of polished zirconia without glaze, 15 discs of metal ceramic, and 15 discs of lithium disilicate were fabricated. Sixty extracted premolars were collected and randomly divided into four groups of 15 each. The discs and extracted human premolars were placed onto holders on a two-body wear machine under a constant load of 5 kg to simulate the oral wear cycle. A diffractometer was used to analyze phase transformation. One-way analysis of variance and Tukey's post hoc tests was used.Results:The mean loss of height of tooth samples and its standard deviation for Group I (monolithic zirconia with glaze), Group II (mechanically polished monolithic zirconia without glaze), Group III (porcelain fused to metal), and Group IV (glazed monolithic lithium disilicate) was obtained as 0.2716 ± 0.1409, 0.1240 ± 0.0625, 0.1567 ± 0.0996, and 0.2377 ± 0.1350, respectively. The highest mean loss in height was observed in Group I and the least was observed in Group II.Conclusion:Mechanically polished zirconia showed the least amount of enamel wear followed by porcelain fused to metal and glazed monolithic lithium disilicate, whereas glazed monolithic zirconia showed the highest enamel wear.
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