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Dynamic Effect of Occlusal Vertical Dimension on Lower Facial Form and Lip Positions
Sponsor: The University of Texas Health Science Center, Houston
Summary
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.
Key Details
Gender
All
Age Range
21 Years - 90 Years
Study Type
INTERVENTIONAL
Enrollment
50
Start Date
2026-03-30
Completion Date
2026-06-30
Last Updated
2026-03-24
Healthy Volunteers
No
Conditions
Interventions
Occlusal Vertical Dimension Modification (-4mm)
Participants will undergo fabrication and placement of removable bite splints designed to alter occlusal vertical dimension (OVD). On each side, four discrete reference points will be marked at the lowest point of the orbital margin and the highest point of the external auditory meatus using Whip-Mix reference plane marker.The subject's head position will be leveled with EZ bow laser level device and -4mm OVD color coded bite splints will be randomly placed in position. An image with desktop facial scanner will be taken.
Occlusal Vertical Dimension Modification (-2 mm)
Participants will undergo fabrication and placement of removable bite splints designed to alter occlusal vertical dimension (OVD). On each side, four discrete reference points will be marked at the lowest point of the orbital margin and the highest point of the external auditory meatus using Whip-Mix reference plane marker.The subject's head position will be leveled with EZ bow laser level device and -2mm OVD color coded bite splints will be randomly placed in position. An image with desktop facial scanner will be taken.
Occlusal Vertical Dimension Modification (0 mm)
Participants will undergo fabrication and placement of removable bite splints designed to alter occlusal vertical dimension (OVD). On each side, four discrete reference points will be marked at the lowest point of the orbital margin and the highest point of the external auditory meatus using Whip-Mix reference plane marker.The subject's head position will be leveled with EZ bow laser level device and 0mm OVD color coded bite splints will be randomly placed in position. An image with desktop facial scanner will be taken.
Occlusal Vertical Dimension Modification (+2mm)
Participants will undergo fabrication and placement of removable bite splints designed to alter occlusal vertical dimension (OVD). On each side, four discrete reference points will be marked at the lowest point of the orbital margin and the highest point of the external auditory meatus using Whip-Mix reference plane marker.The subject's head position will be leveled with EZ bow laser level device and +2mm OVD color coded bite splints will be randomly placed in position. An image with desktop facial scanner will be taken.
Occlusal Vertical Dimension Modification (+4mm)
Participants will undergo fabrication and placement of removable bite splints designed to alter occlusal vertical dimension (OVD). On each side, four discrete reference points will be marked at the lowest point of the orbital margin and the highest point of the external auditory meatus using Whip-Mix reference plane marker.The subject's head position will be leveled with EZ bow laser level device and +4mm OVD color coded bite splints will be randomly placed in position. An image with desktop facial scanner will be taken.
Locations (1)
The University of Texas Health Science Center at houston
Houston, Texas, United States