The purpose of the study is the comparison of bone gained histologically from the Bone Shell Khoury's Technique in comparison with the usage of non-resorbable membrane polytetrafluoroethylene and discussing its eligibility for implant placement in restoring the atrophic posterior mandible.
Have two or more missing teeth in the posterior mandibular segment.
The patients age of 18 and above.
The alveolar ridge in the edentulous site of the selected patients will have a buccolingual width of less than 4mm.
Sufficient vertical bone height.
Patients taking any medication that may interfere with bone healing or bone biology.
Patients with any systemic disease that may affect bone healing.
Any patients with any previous bone grafting procedure at the site of interest.
Smokers.