Before revision: Sinus pneumatization is a poorly understood phenomenon that results in an increased volume of the maxillary sinus, generally following maxillary posterior tooth loss, at the expense of that bone which used to house the roots of the maxillary posterior teeth.
After revision: Sinus pneumatization is a poorly understood phenomenon the results in an increased volume of the maxillary sinus, generally following maxillary posterior tooth loss, at the expense of that bone which used to house the roots of the maxillary posterior teeth.