Hello, your worry will not exist. The breast pump of the dental chair sucks saliva and water away and discharges them directly without storage. No pump can be reversed, only on and off. The suction pipe is connected to the machine through a valve to prevent backflow.
When I was doing treatment, I found that there was water, which was purified by a grinding machine and would not affect my health.
Hello, if you are satisfied, please give me five points. I wish you a speedy recovery! thank you