This question is a follow up on How to do dental surgery on a T-Rex tooth?
I need to give an adult male T-Rex dental surgery and I don't want to risk any unexpected jaw movements while I climb inside its cave to do the dirty work. What kind of anesthesia and how much do I need to give my T-Rex to completely paralyze it for the duration of the orthodontic operation?
I treat my pet humanely so tranquilization is not an option as discussed in How to estimate size of ketamin dose to sedate a T. rex.?