I am a dentist and any oddly specific instructions I give are usually because some turd has tried it before:
“Prepare your nightguard by running it under warm water. This means a few seconds under the warm water from your tap - do not boil your nightguard in a pot for half an hour, it will be destroyed”
“Do not place a tiny crab fork in your extraction site to remove food debris”
“If you require an adjustment, please return. Your garage power tools are not safe to use on your teeth”