Here’s an unusual scene – dental torture. Mouths and gags show up all the time in BDSM imagery and play, but it’s rare to see an explicit dental scene. Even Whitehead gags, which crop up fairly often and were originally designed for dental work, are rarely used in their original context. In contrast, regular non-dental medical scenes are a fixture of both play and BDSM porn. It’s interesting to speculate why that difference exists.
One answer might be simple practicality. It’s fairly easy to learn to do basic medical play and not risk significant damage. Things like needle play, enemas, plaster casts and suturing can be done for real, provided the domme has done the relevant training. With dental work it’s hard to imagine what basic stuff could be done, outside of straight play acting. Nobody should be drilling teeth or poking gums without serious certificates on their wall.
The other answer might be a more psychological one. In hospitals we feel more out of control, where in dental surgeries we just feel uncomfortable. If we’re sick or even just being tested for something, the work of doctors and nurses seems somewhat unfathomable. They tell us they need to do some thing and we have to accept it and lie back. Where with dentists, we’re typically very aware of what they’re doing. Drilling and scraping teeth seems necessary, but boring. From a psychological perspective a dental procedure doesn’t feel like giving up control to me, despite the obviously vulnerable position, it just feels like a unpleasant chore.
The watermark (assuming there was one) has annoyingly been cut off this image. I found it on the Femdom Times, but I’m afraid I don’t have an original attribution.
This image is from the 
This is Vinyl Queen with some of the tools of her trade.
