My previous, now retired, vet used to desacle Izzy's teeth, using sedation and not the usual anaesthetic, because he was in last stage mvd. However, the present vet did Monty's using full anaesthetic as he said it's actually safer, being instantly reversible, whereas sedation carries a risk of choking, because of the irrigation used.
The abob=ve were for essential descalling, because of threatened infection. I wouldn't expect any anaesthesia or sedation for ordinary cleaning.
Barbara, Monty, Joly and Teddy.