Plans are generally not necessary to get a permit to do mechanical work on a dwelling. You will be expected to briefly describe the work proposed. For example, describe the appliance you intend to install and whether you will be installing a new vent, new ductwork, etc.
It depends on what kind of stitches the dentist used in your mouth. There are two types: stitches that resorb on their own and you don't need to do anything, and the other are stitches for which you see the dentist in about two weeks and he/she removes them. Ask your dentist which type he/she placed in your mouth.
The measure of the time it takes for dissolving relies on the material used. Chromic-treated gut endures on the request of 9 to 14 days and gut sutures remain genuinely in place for 5 to 7 days. The synthetic material will remain for 2-3weeks. In most types of surgery in the mouth, we will use dissolving sutures, this saves the patient the trouble of having sutures removed.