Compomer
Pronunciation: KOM-poh-mer
A polyacid-modified composite resin that combines elements of composite resin and glass ionomer chemistry, primarily used in pediatric dentistry.
Full Definition
The portmanteau 'compomer' (from 'composite' and 'ionomer') describes a class of materials in which polyacid-functional monomers are incorporated into a resin composite matrix containing ion-leachable glass fillers. Unlike true glass ionomers, compomers undergo only resin polymerisation as their primary setting reaction; any acid-base reaction is minimal and requires moisture uptake post-placement. They release lower levels of fluoride than glass ionomers but offer improved aesthetics and ease of placement. Editors should avoid conflating compomers with RMGI materials, which do exhibit a genuine acid-base component.
Usage
Usage note: Always lowercase; 'compomer' is a generic material class, not a brand name, though several proprietary compomers exist.
In Context
- "Compomers are frequently selected for primary molar restorations owing to their acceptable fluoride release and reduced placement sensitivity." — Pediatric dentistry review article
- "The manuscript incorrectly classified the test material as a glass ionomer; it was, in fact, a compomer." — Peer-review commentary