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.
Most dissolvable stitches start to break down within one to two weeks. However, it could take several months before your stitches disappear completely. After the wound has healed, it may be possible for a nurse to remove the loose ends of the dissolvable stitches, to speed up the process.here are several other different types of stitches. In general, if your stitches are dissolvable, they should start to break down within four weeks. Some may take six months to disappear completely.