According to your description, mucous gland cyst is more likely. This kind of operation is less important in oral and maxillofacial surgery. Generally, oral anti-inflammatory drugs can prevent postoperative infection, so infusion is not needed. Drooling is normal, because oral injury can stimulate mucus glands to secrete saliva, which is normally swallowed inadvertently. You can try to divert your attention, which will be better. It doesn't matter if it flows to the wound. Generally speaking, paying attention to oral hygiene will not cause infection. After this operation, generally do not eat hot and sour, just light. It doesn't matter.