Which of the following is NOT a symptom of periodontal disease?

The correct answer, indicating that dry mouth is not a symptom of periodontal disease, is based on a clear understanding of the typical signs associated with periodontal conditions.

Periodontal disease primarily affects the gums and the supporting structures of the teeth, leading to symptoms such as bleeding gums, tooth mobility, and bad breath. Bleeding gums occur due to inflammation and infection caused by plaque accumulation. Tooth mobility can result from the destruction of the supporting bone, as periodontal disease progresses. Bad breath, or halitosis, often arises from bacteria and infection present in the periodontally affected tissues.

In contrast, dry mouth—medically termed xerostomia—does not directly result from periodontal disease. It may arise from various other factors, including medication side effects, dehydration, or certain health conditions, but it is not a characteristic symptom of periodontal disease itself. Understanding these distinctions helps in recognizing and diagnosing periodontal issues effectively.