I had a patient in today to complete a quadrant of teeth on the upper right. She did great through the local anesthetic and placement of the Isolite. As we began to work, she raised her left hand to stop us. The cold caused by the water spray and the high volume suction were causing her to experience sensitivity on her lower teeth where she has root exposure. This is a common experience and one I have sought to rectify over the years. I have tried placing a cotton roll in the buccal vestibule by the sensitive teeth. This tends to work for awhile until the cotton roll becomes super wet, or their lip pushes it out.
Another way to protect the teeth that aren’t anesthetized is to place a rubber dam. As I was contemplating how to proceed and keep the patient comfortable with something short of doing a lower inferior alveolar nerve block my assistant had a suggestion. She wondered why we couldn’t simply inject bite registration material around the teeth? This is the way we hold down the rubber dam when using a split dam technique, so I figured it ought to work. She got out the bite registration silicone. I dried the teeth ( with cotton of course not a stream of air) then injected the bite registration along the necks of the teeth. While I was waiting for it to set I took a perio probe and pushed some into the embrasures.
Sure enough when it set it stuck in place to the teeth and created a protective barrier against the cold air. When we were done with the procedure we teased it off from around the teeth without hassle. Our new technique resulted in a comfortable patient who wondered if she could come in and have us put the silicone on her teeth when she got a craving for ice cream!