Background: Dental implant therapy in the posterior maxilla may be difficult owing to limited bone height after dental extraction with sinus pneumatization. Several approaches for sinus floor elevation have been documented, and hence trans crestal sinus lifting with albumin platelet rich plasma.
Aim of the study: To compare between erythropoietin and albumin platelet rich fibrin transcrestal sinus lifting versus albumin platelet rich fibrin transcrestal sinus lifting using piezoelectric device in patients with atrophic maxilla.
Methods: This study will be carried out as a randomized
Residual bone height not less than 5 mm measured from crestal bone to sinus floor.
Both genders.
Good oral hygiene
No previous surgery or radiation treatment on the maxillary sinus
Recent radiation therapy in maxilla.
Uncontrolled systemic diseases such as diabetes mellitus.
Heavy smoker (those who smoke ≥ 25 cigarettes a day).
Alcohol abuse.