Generalized bone loss is defined as bone loss affecting:

• A. More than 30% of sites
• B. Less than 10% of sites
• C. All sites
• D. Only anterior teeth

Answer: (A)

Generalized bone loss means the bone loss is spread across a substantial portion of the dentition. In periodontal scoring, you assess the number of tooth sites with bone loss beyond normal and express it as a percentage. If more than 30% of sites show bone loss, the pattern is considered generalized. This threshold helps distinguish widespread disease from localized involvement and influences prognosis and treatment planning. If 30% or fewer sites are affected, the pattern would be localized. The other options describe either minimal involvement, involvement of every site, or a regional pattern (such as only the front teeth), none of which define generalized bone loss.