Freeway Space
The interocclusal gap present when the mandible is at rest, representing the difference between the vertical dimension of rest and the occlusal vertical dimension.
Full Definition
Freeway space, also called the interocclusal rest space, is the clearance between the maxillary and mandibular teeth or denture occlusal surfaces when the mandible is in its postural rest position. It is calculated as the arithmetic difference between the vertical dimension of rest (VDR) and the occlusal vertical dimension (OVD), and typically measures 2–4 mm in dentate individuals. Dental laboratory technicians consider freeway space when setting denture teeth and adjusting occlusal rims to avoid an over-closed or over-opened prosthetic occlusion. In editorial contexts, 'freeway space' should not be hyphenated as 'free-way space.'
Usage
Usage note: Write as two words: 'freeway space.' Do not hyphenate. Distinguish from 'interproximal space,' which describes the area between adjacent teeth.
In Context
- "A freeway space of 3 mm was confirmed before the final occlusal rims were sent for trial denture fabrication." — Clinical–laboratory communication
- "The article repeatedly confuses 'freeway space' with 'interproximal space'; these require correction throughout." — Copyediting note