Osseodensification Versus Alveolar Ridge Splitting

Inclusion Criteria: I. Patients with atrophic maxillary alveolar ridges in horizontal dimension \<18 years old. II. the bucco-palatal alveolar ridge dimension 2-4 mm III. a minimal vertical bone height of 10 mm Exclusion Criteria: I. Bad oral hygiene. II. Patients with non healthy habits as (Smokers, Alcoholics, or drug abusers). III. Patients with any active periapical pathosis. IV. Patients treated with chemo or radiotherapy during the past 5 years. V. Acute and progressive periodontal disease. VI. Medically compromised patient not indicated for surgical procedures. VII. Patient with history of bleeding disorders. VIII. Patient with osteo-porotic disease.