Dynamic Effect of Occlusal Vertical Dimension on Lower Facial Form and Lip Positions

Dynamic Effect of Occlusal Vertical Dimension on Lower Facial Form and Lip Positions

The purpose of this study is to evaluate the effect of increased/decreased occlusal vertical dimension (OVD) on lower facial form and lip position, to analyze variations across gender groups and to analyze variations across age groups.

Inclusion Criteria:

-Complete edentulous with complete dentures or overdentures

Exclusion Criteria:

• Gross facial asymmetry
• A history of surgery in the facial area
• A history of neurologic disorders
• Ill-fitting dentures
• Dentures with inaccurate occlusal vertical dimension (OVD)
• Inability or unwillingness to smile
• Allergy to nitrile, vinyl polysiloxane (VPS) material or photopolymer resins.
• Presence of facial hair that would interfere with marking reference points on the face
• Severe class II or class III malocclusion