Regeneration, Reconstruction & Restoration (Triple R)

Abstract:

Objective: The aim of the present study was to evaluate the effect of different amounts of ethanol evaporation duration of different 5^th class bonding systems bonded with two different adhesives on dental resin composites microleakage.

Material and Methods: In the present in-vitro study, 60 human sound teeth were included and Class V cavity preparation was conducted on buccal surface of each tooth. The prepared specimens were divided into six different groups (n = 10) according to type of adhesive bond used (Adper Single bond & SoloBond) and time required for solvent to evaporate (immediately, 5 min and 20 min). Composite restoration was conducted and specimen underwent thermocycling. The respective teeth were rinsed in 0.5% fuschine die for 24 h and investigated using ×12 stereomicroscope. Detected microleakage was scored and analyzed using Mann U Whitney and Kruskal Wallis test.

Results There was no statistically significant difference between groups in terms of occlusal (p = 0.095) and gingival (p = 0.495) margin median microleakage scores.

Conclusion: According to our findings, solvent evaporation had no significant effect on either occlusal or gingival microleakage severity of class V resin composite restorations with 5^th generation bonding systems.

Background and objectives: Medical emergencies habitually take place in dental workplaces. The significant and beginning step in overseeing these emergencies is to manage basic life support, which needs sufficient knowledge, experience, and equipment. The point of this study was to examine the attitude of dental practitioners to manage therapeutic emergencies in dental office.

Materials and methods: This analytic cross-sectional research was done in Ilam among 58 general dentists, in 2020. A questionnaire was prepared and after validity and reliability confirmation, was completed by dentists. The recorded data was analyzed using descriptive statistics, Chi-square test, T-test, and Pearson correlation test.

Results: In this study of 58 participants, 26 (44.8%) were females and 32 (55.2%) were males. Among dentists enrolled in the study, 39 (67.2%) persons had less than 10 years of experience and 19 (32.8%) had more than 10 years of work experience. 41 (70.7%) of the responders had a good knowledge score, 11 (19%) of them had a low score, 6 (10.3%) had an average score and none of them had a perfect score. dentists who had worked more than 10 years, had better scores.

Conclusion: Knowledge of dentists in the field of medical emergencies was positive, it is suggested to raise as much knowledge on how to deal with medical emergencies in the office, regular training courses were held.

Background and objectives: The purpose of this study was to investigate the knowledge of attitude and anxiety in students and dental assistants of Shahid Beheshti University about the COVID-19 pandemic.

Materials and Methods: A descriptive cross-sectional study was conducted using an online questionnaire for 200 students and specialized assistants of the school of dentistry. Data was collected with questions such as demographics, people's opinions about their knowledge, attitudes, and levels of anxiety about the Coronavirus pandemic.

Results: The level of knowledge and attitude of individuals was acceptable. There was no statistically significant difference between the knowledge level of attitude and anxiety of male and female participants as well as students and specialized assistants. A general acceptance of preventive measures was reported.

Conclusion: The level of knowledge and attitude of the participants were acceptable, and their level of anxiety was high, which may affect their attitude.

Keywords:  COVID-19, Dentistry, Knowledge, Attitude, Anxiety.