B.P. Koirala Institute of Health Sciences Dharan, Nepal 4th year BDS Internal Assessment, February 2018 Subject: Public Health Dentistry Date: 14th February, 2018 Time : 1 Hour 20 minutes Total marks: 60 SECTION 'A' SHORT ANSWER QUESTIONS Maximum Marks - 30 1. Enlist and explain the principles of primary health care. (1+4=5) 2. Diffferentiate between case control and co-hort studies. (5) 3. Describe the expression repeat restoration cycle. (5) 4. Define Dental Public Health. Briefly explain the characteristics of public health work. (1+4=5) 5. Explain various methods by which you can prevent transmission of infections between patient and health care personnel. (5) 6. Explain Salivary reductase caries activity test. (5) SECTION 'B' MODIFIED ESSAY QUESTION Maximum Marks - 30 I. In a recent epidemiological study, it was observed that among 50 individuals with oral cance...