occlusal vertical dimension
Also written as: OVD — Occlusal Vertical Dimension
The measured distance between two designated anatomical points when the teeth or occlusal rims are in maximum intercuspation.
Full Definition
Occlusal vertical dimension (OVD) defines the face height when the jaws are closed in maximum intercuspation, measured between a point on the maxilla and a corresponding point on the mandible. It is a fundamental parameter communicated from the clinician to the dental laboratory through the prescription and articulator records. Changes in OVD—whether opened or closed—directly affect the spatial relationships of all restorations being fabricated and require corresponding adjustments to the articulator. Editors must not substitute 'vertical dimension' alone, as multiple vertical dimension records exist (rest, occlusal, phonetic); the full descriptor is required for precision.
Usage
Usage note: Always use the full term on first mention; 'OVD' is acceptable thereafter. Avoid abbreviating to 'vertical dimension' without a qualifier.
In Context
- "The laboratory was instructed to increase the occlusal vertical dimension by 2 mm across all four posterior quadrants." — Laboratory Prescription
- "Incorrect articulator mounting may alter the occlusal vertical dimension and compromise the interocclusal clearance of the planned restoration." — Technical Advisory Note