Public Health Dentistry #8

1. Enameloplasty

Fissures are broadened and made self-cleansable

1/4 of enamel is removed

1/3 of enamel is removed

1/2 of enamel is removed

Question 1 of 20

2. If mean is less than the median, than the data is said to be

Equitable distribution

Normal distribution

Positively skewed

Negatively skewed

Question 2 of 20

3. A Dental health survey in a community helps to establish what type of needs of the population:

Felt needs

Perceived needs

Expressed needs

Normative needs

Question 3 of 20

4. Power of a statistical test indicates

The ability of a test to accept a null hypothesis when it is false

The ability of a test to accept a null hypothesis when it is true

The ability of a test to reject a null hypothesis when it is false

Question 4 of 20

5. In national water supply and sanitation program, a 'Problem village' is defined as all except

Water source has excess of iron, fluoride and heavy metals

Distance of safe water source is more than 1.6.km

Water is infested with guinea worms

Water is available at a depth of more than 15 meters

Question 5 of 20

6. Acceptable range of microbial load in water line of dental unit for immunocompromised patient

300-600 CFU

< 200 CFU

200-400CFU

No specific limit

Question 6 of 20

7. The best indicator of current caries susceptibility of an adult

Number of teeth present

Number of teeth with pit and fissure sealants

Number of filled teeth

Level of plaque at the time of examination

Question 7 of 20

8. The no. of death due to oral carcinoma divided by mid-year population?

Case fatality rate

Proportional death rate

Crude death rate

Specific death rate

Question 8 of 20

9. An investigator wants to study the association between maternal intake of iron supplements (Yes/ No) and birth weights (in gms) of newborn babies. He collects relevant data from 100 pregnant women and their newborns. What statistical test of hypothesis would you advise for the investigator in this situation?

Paired t-test

Analysis of Variance

Chi-Square test

Unpaired or independent t-test

Question 9 of 20

10. Space maintainers belong to which level of prevention

Health promotion

Primary prevention

Specific protection

Disability limitation

Question 10 of 20

11. Student t test - true is?

Sample is small

Number of observation in sample is same

SD is similar

Mean is similar

Question 11 of 20

12. In an epidemiological study, the first case which comes to the attention of the investigator is

Secondary case

Primary case

Index case

Reference case

Question 12 of 20

13. Iceberg phenomenon differentiates

Symptomatic & asymptomatic

Apparent & inapparent

Diagnosed and undiagnosed

Cases & carriers

Question 13 of 20

14. Helsinki declaration is for

Ethical duties for biomedical research involving human subjects

Ethical duties and rules for dentists in general practice

All of the above

Ethical duties and rules for physicians in general practice

Question 14 of 20

15. Which of the following statements regarding live vaccines is false :

Single dose gives lifelong immunity

Live vaccine contains both major and minor antigens

Two live vaccines cannot be administered simultaneously

Booster doses are not required when live vaccines are administered

Question 15 of 20

16. While calculating Infant mortality rate, which of the following is not included

Postnatal death

Still birth

Perinatal death

Natal death

Question 16 of 20

17. Degree of relationship between cause and effect is represented by

P value

Significance

Power of study

Risk ratio

Question 17 of 20

18. In a disease process, probability of correctly identifying case of disease is

Validity

Reliability

Specificity

Sensitivity

Question 18 of 20

19. Integrated child development Scheme (ICDS) in India comes under:

Ministry of Home affairs

Ministry of Human resource and development

Ministry of health and family welfare

Ministry of women and child development

Question 19 of 20

20. Patient pays a stipulated amount of money towards the treatment is termed

Deductible

Third party payment

Fee for service

Coinsurance

Question 20 of 20