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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
50
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.
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.
The University of Texas Health Science Center at houston
Houston, Texas, United States
Maxillary central incisor length
Time frame: From time of denture placement to about 24 hours after denture placement (depending on patient availibity)
Interlabial gap height
Time frame: From time of denture placement to about 24 hours after denture placement (depending on patient availability)
Intercommisural width
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Distance from Maxillary incisal edge to upper lip in millimeters
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Distance from Maxillary incisal edge to lower lip in millimeters
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Upper lip length
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Upper lip vermilion height
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Lower lip vermilion height
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
The upper lip margin on the central incisor to the gingival margin of maxillary central incisor
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
The lower lip margin on the central incisor to the gingival margin of mandibular central incisor
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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.
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.
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.
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Maxillary central incisor length
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Interlabial gap height
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Intercommisural width
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Maxillary incisal edge to upper lip
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Maxillary incisal edge to lower lip
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Upper lip length
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Upper lip vermilion height
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
Lower lip vermilion height
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
The upper lip margin on the central incisor to the gingival margin of maxillary central incisor
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)
The lower lip margin on the central incisor to the gingival margin of mandibular central incisor
Time frame: denture placement to about 24 hours after denture placement (depending on patient availability)