Complete Digital Workflow for Construction of Full Arch Implant Supported Screw Retained Restoration

The patient will be selected according to the following criteria:

• Free from any systemic disease that may interfere with proper Osseointegration of implants, which will be assessed by thorough medical investigations.
• Patients having completely edentulous maxilla and mandible for at least 6 months after the last extraction.
• Normal maxilla mandibular relationship with adequate inter-arch space, measured by tentative jaw relation.
• Sufficient residual alveolar ridge.

Exclusion criteria

include:

• Local or general contraindications for surgical procedures.
• Patients with TMJ disorders or poor neuromuscular coordination or parafunctional habits.
• Severe inter-maxillary skeletal discrepancy or limited inter-arch space.
• Heavy smokers.

• For all patients, conventional complete dentures are constructed.
• Implants installed in the edentulous maxilla and mandible in each target position guided by stereolithographic stent. A delayed loading protocol is followed in this study.
• After osseointegration, a conventional open tray splinted impression technique will be made for each patient on the implant/abutment level.
• Scan bodies' implant level/abutment level will be tightened for each patient, and a digital intraoral scanner will be used to scan the scan bodies for making implant level/abutment level digital impressions.

Accuracy will be evaluated as follows:

• 3D inspection software using the best-fit alignment algorithm will be utilized to calculate the 3D deviation of each impression using the root mean square (RMS) error.
• Passive fit of the framework will be evaluated at the time of insertion.

Inclusion criteria

• Free from any systemic disease that may interfere with proper Osseointegration of implants, which will be assessed by thorough medical investigations.
• Patients having completely edentulous maxilla and mandible for at least 6 months after the last extraction.
• Normal maxilla mandibular relationship with adequate inter-arch space as verified by tentative jaw relation.
• Sufficient residual alveolar ridge.

Exclusion criteria

• Local or general contraindications for surgical procedures.
• Patients with TMJ disorders or poor neuromuscular coordination or parafunctional habits.
• Severe inter-maxillary skeletal discrepancy or limited inter-arch space.
• Heavy smokers.