dental dam

(thing) by 65535 Thu Mar 23 2000 at 17:05:31
a piece of latex placed over the vulva during cunnilingus to protect both partners from STDs.
(thing) by lignocaine Fri Apr 14 2000 at 10:51:34

Green stuff that dentists use to protect patients from inhaling dental instruments.
Apparently more are sold in the America for protection during sex than for dental work.

It isolates the tooth or teeth being worked on by the dentist. The perfect moisture-free environment for perfect composite restorations, and the almost perfect defence in litigation for failed root canal therapy.
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