Effect of PEEK and Co-Cr Framework Reinforcement on Marginal Bone Loss Around Implants Supporting a Fixed All-on-four Prosthesis in Completely Edentulous Mandibles. A Randomized Controlled Clinial Trial

Effect of PEEK and Co-Cr Framework Reinforcement on Marginal Bone Loss Around Implants Supporting a Fixed All-on-four Prosthesis in Completely Edentulous Mandibles. A Randomized Controlled Clinical Trial

A fixed all-on-four prosthesis will be fabricated for the mandibular arch for each patient and the marginal bone loss will be evaluated at baseline, 3,6,9 and 12 months

Inclusion Criteria:

• Completely edentulous patient with old satisfactory maxillary and mandibular dentures requiring an implant supported restoration
• Implant sites must allow for implant placement
• Patients with no systemic conditions that may interfere with implant placement

Exclusion Criteria:

• General contraindications for implant surgery( Poor oral hygiene- diabetes- pregnancy or nursing- drug abusers)