diatoric
Pronunciation: dy-uh-TOR-ik
A retentive hole or undercut feature built into the base of a porcelain tooth, used to mechanically lock the tooth into a denture base resin.
Full Definition
A diatoric (also spelled 'diatorique' in older texts) is a small retentive aperture or channel present on the tissue-facing surface of prefabricated porcelain denture teeth. During denture construction, the liquid acrylic resin flows into these recesses and polymerizes, creating a mechanical bond between the tooth and the denture base. Unlike acrylic teeth, which bond chemically to the base, porcelain teeth rely on the diatoric for retention. Dental technicians must ensure the diatoric is properly oriented before processing. Editors should note that 'diatoric' is both a noun (the hole itself) and an adjective (as in 'diatoric tooth').
Usage
Usage note: May be used as both noun and adjective. The variant spelling 'diatorique' appears in older British and European literature.
In Context
- "Because porcelain teeth lack chemical adhesion to acrylic, the laboratory relies on the diatoric for mechanical retention." — Technical procedure manual
- "The QC checklist requires verification that each diatoric is patent before waxing-up the denture teeth." — Laboratory quality control document