proximal contact
The area where adjacent teeth or prosthetic restorations touch one another at their side surfaces, critical for maintaining dental arch integrity.
Full Definition
Proximal contact refers to the deliberate point or area of contact between the mesial or distal surfaces of neighbouring teeth or restorations. In dental laboratory fabrication, establishing correct proximal contacts is essential to prevent food impaction, tooth migration, and periodontal problems. Contacts are assessed using dental floss or shimstock and must be neither too tight nor absent. Laboratory prescriptions and quality notes frequently reference proximal contact tightness as a pass/fail criterion during restoration assessment. Editors should note that 'proximal contact' is distinct from 'occlusal contact,' which refers to contacts between opposing teeth.
Usage
Usage note: Distinguish from 'occlusal contact.' Also note 'open contact' as its direct antonym — an open contact is a fabrication defect.
In Context
- "The quality check noted that the proximal contact on the mesial surface of the crown was too tight." — Laboratory inspection report
- "Establishing an appropriate proximal contact prevents food packing between the bridge and the adjacent natural tooth." — Dental laboratory training material