Vertical Dimension of Occlusion (VDO)

# A denture that is fabricated with excessive Vertical Dimension of Occlusion (VDO) may result in:
A. Inefficient mastication
B. Perioral rhytides (wrinkles)
C. Trauma to supporting soft tissue
D. Sagging oral commissures

The correct answer is C. Trauma to supporting soft tissue. 

Perioral rhytides, sagging oral commisures and deep labiomental groove is an indication that the vertical dimension of occlusion is insufficient. 

Excessive vertical dimension of occlusion (VDO) causes pain in the soft tissue under the denture because excessive force is created during occlusion. 

Excessive VDO manifests as a "full mouth" as well as a difficulty pronouncing words. 

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