Introduction: Dental radiographs have always been the mainstay of the diagnosis of oral diseases. Even if the radiation hazard posed by the dental radiographs is low but still accumulation of such low level radiation in human body over a time period can pose a threat to the overall health of the individual. The aim of this study is to assess the knowledge of dental students about radiation protection and hazards. Methods: The present cross sectional study was conducted by enrolling one hundred 4th year dental students from the two teaching hospitals in Chitwan district of Nepal. A questionnaire consisting of a total of 20 questions was distributed and each question was allocated 0.5 marks for correct response whereas no deduction for wrong answer. Results: The results of the present study depicted that 85 (85%) of the total students enrolled in the study had “good” knowledge about the radiation physics, protection and hazards whereas only 15 (15%) of them had “poor” knowledge. Conclusions: The study concluded that teachers should involve in imparting more and more knowledge as well as training about the topic and dental curriculum should be altered so as to train the budding dentists about all aspects of radiation.

Introduction: General practitioner dentists and non-orthodontic specialties ought to have the knowledge of the basic principles and practices of orthodontics in order to educate the patients, diagnose their problems correctly and for proper referral. The objective of the present study is to assess the attitude and knowledge of the general practitioner dentists and non-orthodontic specialists towards the basic principles and practices of orthodontics. Methods: This study was performed by presenting a closed questionnaire to a total of 78 participants out of which 46 were general practitioners and 32 were non-orthodontic specialists. A questionnaire consisting of a total of 21 questions was distributed and each question was allocated 0.5 marks for correct response whereas no deduction for wrong answer. Results: In this present study, the total mean score of the evaluation of the questionnaire came out for general practitioner dentist and the non-orthodontic dental specialists was 13.92 and 16.69 respectively. The present study showed a statistically highly significant knowledge and attitude difference between Group A and Group B ( P<0.001). Conclusions: This study shows a need for a increased clinically oriented education in the undergraduate courses and a multi-disciplinary inter department seminar presentations and forums set up for the post graduation courses for them to understand the scope of each other’s specialties.

Background: Utilization of age estimation has increased manifold in recent years. Various methods available for age estimation before the complete dentition has erupted and matured till the root closure stage include Nolla’s stages, Demirijan”s method, modified Demirijan’s method by Willems, Haavikko’s method. So, in this study we have tested that on Chitwan population of Nepal.Materials and methods: 60 patients between the ages 6-16 were selected and digital orthopantomographs of each of the patients was taken and then Demerijian method was applied and age estimation done by Willems method. Whereas the chronolical age was known and the reliability of this method on this population checked.Results: The study shows correlation between chronological age CA and estimated dental age DA in males - .965 while in females - .861 and it is statistically significantConclusion: There was an underestimation of age i.e. the dental age was found out to be less than the actual chronological age of the sample. This shows the dental growth lag in the Chitwan  population. It was also found that when a comparison is done between the males and females it is found out that the females mature earlier than the males.

Introduction: There is a global crisis which has been led by COVID-19. The patients undergoingdental procedures and dental professionals are at higher risk of contracting this disease owing toaerosols generated and a lot of face to face contact during the procedures. The aim of this study was to know the perceptions of dental students of COMS-TH regarding future of dentistry in Nepal amidCOVID-19 pandemic. Methods: The present cross-sectional descriptive study was conducted at COMS-TH, Bharatpur by sending an online e-survey questionnaire to 146 dental students out of which 99 responded. The e-survey questionnaire consisted of three parts which consisted of questions about demographics, knowledge about COVID-19 and their perceptions about future of dentistry. Results: The results of the study depicted that most of the students thought dentistry is good and noble profession and will recommend it to young medical aspirants. Most of them wanted to pursue post graduation courses in future giving preference to Oral and Maxillofacial Surgery. Conclusions: The study concluded that most of the dental students were satisfied with dentistry as their profession and wanted National Dental Association to fix the minimum charges of each dental procedure. Also there is a need to start more post graduation courses in existing institutions providing dental education as most of the students want to pursue it in future.

Introduction: Angle in 1899 propounded the classification to recognize the malocclusion patterns. Class II Division 1 is a malalignment which can be identified by the parameters mentioned.Objective: To assess the knowledge of dental undergraduate students about Class II Division 1 malocclusion and their opinion about the treatment or clinical approach to such patients. Materials & Method: The study was performed using closed questionnaire on 138 fourth and final year undergraduate dental students of College of Dental Sciences, Bharatpur, Nepal. Dental casts and photographs of a patient with Class II Division 1 were shown to the respondents to depict deviated midline, midline diastema, molar relation, increased overjet and overbite.Result: Dental students found it easy to identify increased overjet (91.99%), increased overbite (88.78%), presence of diastema (84.69%) and midline deviation (77.28%). However, 52% students could not identify the molar relationship. When asked about the appropriate timing for treatment; 48.8% thought it should be in deciduous dentition period, 41.6% in mixed dentition, and 9.6% in permanent dentition.Conclusion: Fourth and final year BDS students possess fair knowledge on common parameters used to determine Class II Division 1 malocclusion but they find difficulties in compiling and applying this knowledge to orthodontic treatment concept.