different possible osseodensification techniques used to improve bone density around dental implants, using either ] osseodensifying drills, reverse drilling of conventional drills, and rotary expanders.

the study include 3 groups with different implant drilling protocols; group 1 where osseodensifying burs are used, group 2 where conventional drills with reverse motion are used, group 3 where rotary expanders are used

Inclusion Criteria:

• · Adult osteoporotic female patients confirmed by CBCT grey values ranging from 290 to 420 HU, with age range 45-60 years.

  • Patients should be free from any other systemic diseases, according to ASA classifications (American society of Anesthesiologists).
  • Patients of single or multiple missing teeth in the posterior mandible.
  • A ridge width of 4mm and a height of > 8mm above the roof of Inferior Alveolar canal.
  • No buccal concavities were present at the planned implant site

Exclusion Criteria:

• · Poor oral hygiene.

  • Heavy smoker (more than 20 cigarettes /day),or alcoholic abusing patients.
  • Radiation therapy to the head and neck region, or chemotherapy in the last 6 months prior to the implant placement.