The aim of this study is to evaluate the effect of Osseodensification on implant stability during the healing period The objective of this study is to compare between dental implant stability after osteotomy site preparation using osseodensification technique and conventional drilling technique immediately after implant installation (primary stability) , 6 week after the insertion of implant and 12 weeks later (secondary stability)

Inclusion Criteria:

1. medically fit patients ≥ 18 years of age including both genders
2. alveolar ridges of sufficient vertical and horizontal dimensions
3. bone density less than 850 Hounsfield units (HU) which corresponds to D3-D5 bone density according to Misch bone classification based on preoperative CBCT findings

Exclusion Criteria:

1. Patients with high bone density (more than 850 HU which corresponds to D1 and D2 according to Misch classification are not suitable for osseodensification.
2. Patient with severe buccal plate undercut or concavity
3. Active infection or inflammation in the implant zone
4. Presence of any uncontrolled systemic diseases.
5. Any patient need advance treatment such as sinus lifting and bone augmentation.