Clinical Performance and Accuracy of Healing Abutment With Scan Peg for Single Posterior Implant-supported Restorations

Scanning time (healing abutment-scan peg vs scan body)

The scanning time by intraoral scanner will be recorded in both groups

Time frame: Through study completion, an average of 1 year

Quality of proximal contacts of crowns fabricated by intraoral scanning of scan peg vs scan body

The proximal contacts will be evaluated with dental floss 1. Open: an open contact will be reported if there is no resistance against floss 2. Ideal: an ideal contact will be reported if there is some resistance to interproximal floss insertion. 3. Tight: a tight contact will be reported if it prevents the passage of floss through the proximal contact point. The percentage of proximal contacts will be calculated for each group at day of crown delivery, 3 months and 6 months later.

Time frame: Through study completion, an average of 1 year

Quality of occlusal contacts of crowns fabricated by intraoral scanning of scan peg vs scan body

An evaluation of occlusion will be executed with 2 layers of shim stock of 12µ. 1. No adjustment: if the shimstock is held when the patient clenches and does not need any adjustment. 2. Mild adjustment: If the shim stock is held after simple closure, the occlusal contact will be reported as heavy and received mild chairside adjustment. 3. Major adjustment: If the crown is returned to the manufacturing technician, the adjustment is considered major. 4. Out of occlusion: If the shim stock passes without resistance after clenching, an open contact will be reported. The percentage of occlusal contacts will be calculated for each group at day of crown delivery, 3 months and 6 months later.

Time frame: Through study completion, an average of 1 year

Evaluation of occlusion by digital occlusal analyzer

occlusal force of implant-supported restorations will be measured

Time frame: Through study completion, an average of 1 year