When you ask an elderly patient to say 'San Francisco,' what do you expect?

Correct answer: C. Around 1 mm of occlusal space (collapsed VDO)

• A. Clicking teeth during speech suggests excessive vertical dimension/closest speaking space is too small (teeth contacting), not the expected normal finding.
• B. More than 2 mm typically suggests the vertical dimension of occlusion is too low (excessive freeway/speaking space) — not the expected normal finding.
• C. Correct. The 'closest speaking space' (interocclusal distance during sibilant/fricative sounds like 's' in San Francisco) should be approximately 1 mm under normal/properly restored VDO. The note also indicates this is checked for collapsed VDO scenarios.
• D. Fricative ('f', 'v') sounds normally involve light contact of the maxillary incisors with the wet/dry border of the lower lip — failure of this contact suggests a problem, not the expected normal finding.

Note: Similar to a Bootcamp question. This relates to evaluating vertical dimension of occlusion (VDO) via phonetics.