The objective of this study is to assess clinically the peri implant tissues, the radiological marginal bone loss and the stability around implants placed at the crestal versus the subcrestal level in type 2 controlled diabetic patients using cone beam computed tomography

Inclusion criteria

• Type 2 controlled diabetic patients
• Patients with at least one missing tooth in lower jaw.
• Patients with sufficient alveolar ridge height and width (no need for bone augmentation).
• Patients with sufficient inter-occlusal distance that will allow future restoration.
• Patients with healthy periodontium.

Exclusion criteria

• Smokers.
• Para functional habits.
• Bad oral hygiene measured according to O'Leary plaque index.
• Pregnant women.
• Other local or systemic diseases that may compromise the surgical procedure, healing or osteointegration.