Ask most people to name a barrier method for sexual health and they will say: condom. Ask them to name a second and most will draw a blank. The dental dam — a thin, flat sheet of latex designed to act as a barrier during oral-vaginal or oral-anal sex — exists in almost complete obscurity outside specialist sexual health settings. It is not stocked in most pharmacies. It is not covered in most sex education curricula. And as a result, oral sex goes largely unprotected by people who would readily use a condom for intercourse.
This is a real gap in sexual health practice, not a theoretical one. Oral sex carries genuine STI transmission risk. The dental dam, used correctly, addresses that risk directly. For a comprehensive beginner’s guide to technique and usage, read The Beginner’s Guide to Dental Dams: Why They Are a Safer-Sex Essential. This article focuses on why the product is underused and why that matters.
What Is a Dental Dam?
A dental dam is a thin sheet of latex — or polyurethane for those with latex sensitivity — designed to be held flat over the vulva or anus during oral stimulation. It creates a physical barrier that prevents direct mucous-membrane-to-mucous-membrane contact — the primary route of STI transmission during oral sex — while allowing the giver to perform oral sex through the thin, flexible material.
The name originates from dentistry, where similar latex sheets have long been used to isolate a tooth during procedures. Their adaptation for sexual health use was formalised in the 1980s in response to the HIV epidemic. Purpose-made sexual health dental dams have since been refined in material, size, and lubrication. For a detailed historical and practical overview, see Dental Dams 101: Everything You Were Never Taught in Sex Education.
Why Oral Sex Is Not Risk-Free
One of the most persistent misconceptions in sexual health is that oral sex is inherently safe. It is lower risk than unprotected penetrative sex for certain infections — but it is not risk-free. The following STIs can be transmitted through unprotected oral-genital or oral-anal contact:
- Herpes (HSV-1 and HSV-2): transmissible through skin-to-skin and mucous membrane contact, including during oral sex, even when no visible sores are present.
- HPV (Human Papillomavirus): the most common STI globally; can be transmitted through oral contact and is associated with oropharyngeal cancers.
- Gonorrhoea and Chlamydia: both can infect the throat and be transmitted or received through unprotected oral sex. Pharyngeal gonorrhoea is often asymptomatic.
- Syphilis: can be transmitted through oral contact with an active sore, which may be located in or around the mouth or on the genitals.
- Hepatitis A and B: Hepatitis A in particular carries transmission risk through oral-anal contact due to the faecal-oral route.
A dental dam used correctly provides a physical barrier against transmission of all of the above. The Nulatex latex dental dam is purpose-made for this application — not repurposed from a dental supply.
Why Are Dental Dams So Underused?
The underuse of dental dams is not primarily a product problem — it is an awareness and access problem. Several factors combine to keep the product marginalised:
- Absent from sex education: most sexual health curricula worldwide cover condom use and little else. Dental dams are almost never demonstrated or even mentioned.
- Difficult to find in retail: unlike condoms, dental dams are not stocked in most pharmacies or supermarkets. Consumers who do not know to look online may never encounter them.
- Perceived as a niche product: dental dams are frequently associated exclusively with same-sex female relationships, which is a misconception. Any person engaging in oral-vaginal or oral-anal sex benefits from their correct use.
- Sensation concerns: a common objection is that dental dams reduce sensation. As with condoms, the right technique — including adequate water-based lubrication on the receiver’s side — closes the gap considerably.
Dental Dams vs. Other Barrier Methods: Where They Fit
Dental dams complement, rather than replace, other barrier methods. For penetrative sex, a latex condom remains the appropriate barrier. For manual stimulation, finger condoms provide targeted protection. For oral sex, the dental dam is the only purpose-built barrier available. A comprehensive safer-sex toolkit includes all three. Read Safer Manual Stimulation: 3 Reasons to Include Finger Condoms in Your Bedroom Routine for more on the complete picture.
How to Use a Dental Dam Correctly
- Check the packaging before opening: the foil seal must be intact and the product within its expiry date.
- Open the packaging carefully: do not use teeth, scissors, or fingernails.
- Identify the correct orientation: if the dam is lubricated, the lubricated side faces the receiver. Use compatible water-based lubricant — never oil-based products — on the receiver’s side to improve sensation and maintain position.
- Hold the dam firmly in place throughout: a dental dam will not maintain its position on its own. One hand should keep it in full coverage of the area.
- Single use only: never flip a used dental dam and use both sides. Never reuse. Dispose of after each encounter.
Lubricant Compatibility With Dental Dams
The same lubricant rules that apply to latex condoms apply to latex dental dams. Water-based and silicone-based lubricants are compatible. Oil-based lubricants degrade latex and must not be used. For the full compatibility breakdown, read Lubricants 101: Silicone vs. Water-Based and How to Use Lubricants Correctly with Condoms, Finger Condoms, and Latex Dental Dams.
Where to Buy Dental Dams
Nulatex latex dental dams are available for online purchase. Buying directly from the manufacturer offers the best combination of product quality, verified authenticity, and availability. Store dental dams in the same conditions as condoms: at room temperature, away from direct sunlight, heat, and sharp objects. Check the expiry date before every use.
