Prevention of Accidental Ingestion/Aspiration of Zirconia Crowns: A CAD- based Technique

Accidental aspiration / ingestion of devices and components during dental procedures is reported in literature. Prevention of such incidents is of utmost importance during diagnostic examinations and treatment. This article enumerates a technique to cement a zirconia crown with a modification utilizing computer aided design to prevent any accidental aspiration / ingestion. This technique involves a design modification on the lingual aspect of the zirconia crown to which a floss can be secured. Post cementation of the crown, floss is untied and the modification design is trimmed off, fined and polished. The technique is a simple modification to the existing method for prevention of zirconia crown aspiration / ingestion.