4th Year BDS - Public Health Dentistry - VIIth Sem Exam, Feb 2018 - BPKIHS

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 cancer, 40 
consumed smokeless tobacco at least 4 times a day and the rest did not consume tobacco at all. Among the group of 200 individuals without oral cancer, 120 consumed tobacco in the same frequency.

1. Justify the type  of epidemiological study that was conducted.  (3)
2. Describe the basic steps for conducting the study.  (3) 
3. Identify and explain the epidemiological tools to  be used in the study.  (3)
4. Describe the appropriate analyses and obtain the results.  (6)

II. Water is a vital factor to all forms of life. It has a great role to play in the socio-economic development of huma population. UnitedNations General Assembly had launched the International Drinking Water Supply and Sanitation decade 1981-1990 and it is also emphasized that water is a basic element of primary health care. Water is also integrated with other PHC components because It is an essential part of health education, food and nutrition an also Maternity and Child Health.

Q5. Enlist the properties of water intended For human consumption. Mention the advantages and disadvantages of ground water. (2+2+1=5) 
Q6. Briefly explain biological filter. (5) 
Q7. How can you purify water for household use? Explain. (5) 

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