An indicator of Sjögren's syndrome is:

• A. Low moisture levels in the oral cavity
• B. Excess saliva
• C. Dry skin
• D. Joint pain

Answer: (A)

Sjögren's syndrome involves autoimmune attack on moisture-producing glands, especially the salivary and lacrimal glands, leading to reduced saliva and dryness in the mouth. This dryness, or low moisture in the oral cavity, is a direct result of decreased salivary flow and is a hallmark feature you would expect to see in a patient with Sjögren's. In a dental setting, this dryness raises considerations like higher caries risk, mucosal irritation, and denture fitting challenges, all tied to xerostomia.

Excess saliva would not fit, as Sjögren's typically reduces saliva production rather than increases it. Dry skin and joint pain can occur in autoimmune conditions, but they are not specific indicators of Sjögren's in the dental context, and they don’t reflect salivary gland involvement.