Dental repair is really nothing. Automatic welders are very common e.g. I've worked on automatic brain surgery robots, which really needs to be automatic. because 3d, tricky, and the doctor outside sees much less than the tiny sensors inside. but you can interfere and even invite remote specialists on remote duty to observe or handle the pedals.
How do remote operators account for latency?
They wait and act slow. Latency is a big problem, but you don't need to react fast, just right. The AI helps in proper detection and reactions though.