The Osteogenic Potential of Human Maxillary Sinus Shneiderian Membrane

Inclusion Criteria: * Patients, (n = 10), who suffered from posterior or total maxillary excess undergoing posterior or total maxillary superiorly impaction for orthognathic surgery. These patients do not present any pathological issues in the maxillary sinus * Patients, (n = 10), who suffered from a sinus problem and needs a surgical nasal approach. These patients have an inflammatory or an ongoing disease process in the maxillary sinus Exclusion Criteria: * Smokers or patients with skeletal disorders and syndromatic diseases will be excluded.