Transmission of HIV through oral sex is a lower risk than through anal sex, however some people don’t realise that unprotected oral sex can result in transmission of sexually transmitted infections including genital herpes, chlamydia, syphilis and gonorrhoea, as well as hepatitis.
Known as "the other barrier for safe sex", a dam is a thin square piece of latex which is placed over the anal or vaginal areas during oral sex. If you are sucking someone's penis it is recommended that you use a condom instead.
Using a dam is especially important if you've got a cut or sore in your mouth or lips or if you have bleeding gums.
Similar rules apply to using a dam as for using a condom:
- a dam is for single use only,
- use a new dam for each person,
- dams should not be exposed to sunlight,
- only water-based lubricant should be used on dams, and
- use a new dam if changing between anus and vagina
And like condoms, dams are available in a variety of colours and flavours.
Dams are available from the AIDS Action Council.
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