1 Question: This question requires candidates to master the application of oral epidemiology index. There are five indicators in this question, among which answers A and E are indicators of periodontal health, answers B and C are indicators of dental caries, and answer D is indicators of root caries. In answers A and E, CPI index is mainly used to evaluate periodontal health, and only OHI-S is an index to evaluate oral hygiene, so answer A is correct.
Question 2: There are five indicators in this question, among which answers A and E are indicators of periodontal health, answers B and C are indicators of dental caries, and only answer D is an indicator of root caries. So the answer D is correct.