A thin, latex barrier used during oral-anal and oral-vaginal contact. When used correctly, dental dams have been shown to reduce the risk of orally transmitted STIs such as herpes, HPV, and hepatitis.

Many physicians recommend the use of dental dams as a standard sexual practice, especially during casual sex. Dams can be purchased individually or made from condoms and latex gloves; a small amount of personal lubricant can enhance sensations for the receiving partner.