Management of Distally Extension Maxillary Atrophied Ridge With Two Different Minimal Invasive Treatment Modalities

This study will compare clinical and radio graphic outcomes of two minimally invasive different treatment modalities for atrophied unilateral distal extension maxillary ridges these modalities includeMedially placed implant and Implant retained distal extension removable partial dentureSinus lift and long implant to support fixed screw-retained prosthesis

Inclusion Criteria:The patients will be selected according to the following:They have atrophied unilateral distal extension maxillary ridge and remaining alveolar bone height 6- 8mm as verified by preoperative CBCT, They are healthy, free from any systemic diseases relating to the bone resorption (diabetes - hyperparathyroidism). This can be achieved through medical history and clinical examination by a physician and laboratory investigations.Posterior maxillary alveolar ridge deficient in height, width and covered with healthy firm mucosa.Patients are less satisfied with conventional RPD.Absence of maxillary sinus diseases.Exclusion Criteria:• Acute or chronic sinus pathologyHistory of a sinus augmentation in the past in the relevant sinusPoor dental hygiene. Smoker.Compromised general health (uncontrolled diabetes, bleeding disorder