Dental Dams - Yes!
I use them with every S.P. I visit.
When you consider that some women (I mean S.P.s and non-S.P.s - just women in general) and men (clients and non-clients - just men in general) have chlamydia and gonorrhea, and that the symptoms in both women and men can be mild or missed, why take a chance on unprotected DATY with an S.P., and then possibly transmit it to your significant other, or maybe you give it to your S.P.? Not worth it.
Also, you can sperad gonorrhea to other parts of your body - like your eyes, for instance. And some of the more severe symptoms are no fun, like pelvic inflammatory disease for women and testicle pain for men.
There are flavoured dental dams that are super thin. My S.P. likes to use some lube (Liquid Silk) on her side of the damn and it works well. Can't penetrate with tongue, but some S.P.s don't want too deep penetration with an unprotected tongue anyhow. In my opinion, it's a good trade-off, and it's also good for the S.P., too, since I'm contributing to her safety as well.
A store called "Good for Her" (Harbord and Bathurst Streets, south of Ed Mirvish's store) sells great flavoured dams for $1.25 each. I like the wildberry. There's also vanilla.
Forget dentists. The dams they have aren't appealing or designed for oral sex, and dental supply companies won't sell to the public, either. You can always cut a condom, but the dams are bigger in size and better.
- Citizen Kane