Figure 1.
Prevalence of bleeding on probing according to age group (a) and the average number of teeth with bleeding on probing according to age group (b).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.