Which of the following is the best index to evaluate gingival health:
a. Gingival index by Loe and Silness.
b. Periodontal index.
c. Periodontal disease index.
d. OHI. S.
a. Gingival index by Loe and Silness.
b. Periodontal index.
c. Periodontal disease index.
d. OHI. S.