Will mucocele swelling go down post surgery?

Patients respond to surgery somewhat differently. Mucocele is a glandular disorder that requires complete excision. The larger the mass, the more the surgery dissection is necessary. This can create more swelling. If the swelling does not resolve completely, this suggests that part of the mucocele persists.
As long as the surgery dissection did not injure the muscle or nerve (both unusual) the function the lips with facial animation and smiling should resolve quickly, two weeks to 6 weeks is typical.
If a cosmetic deformity exists long term, dermal fillers or a mucosal advancement flap can be carried out.
You should resolve most of your symptoms between 7-14 days post-treatment and the vast majority of patients have a wonderful outcome. Oral maxillofacial surgeons are trained in this surgery and that specialty has strict guidelines for training and competency.