NCT06040385

Effect of Geometric Modifications of Implant Scan Bodies

Effect of Geometric Modifications of Implant Scan Bodies Compared to Conventional Transfer Techniques on Passivity of Mandibular All on Four Restorations

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 18 (actual)
• Sponsor: Mansoura University · Academic / Other
• Sex: All
• Age: 45 Years – 70 Years
• Healthy volunteers: Accepted

Summary

The aim of this clinical study will be the effect of geometric modifications of implant scan bodies compared to conventional transfer techniques on passivity of all on four mandibular restorations

Detailed description

The aim of this study will be the effect of geometric modifications of implant scan bodies compared to conventional transfer techniques on passivity of all on four mandibular restorations. Evaluation method: The trueness of the final impression and the passivity of the final prosthesis will be evaluated by two methods: Invitro evaluation For each patient in every group, the standard tessellation language (STL) files of scanned impressions will be superimposed on the reference file to determine the 3D surface, linear, and angular position analysis. The STL files for both frameworks will be superimposed on the reference file to determine the passivity. In vivo (Clinical) evaluation Radiographic evaluation using long cone parallel technique will be done for the framework after 6 month (T6) after one year (T12), and after 18 month (T18) from insertion.

Conditions

• Prosthesis Durability

Interventions

Type	Name	Description
DEVICE	Implant supported hybrid prosthesis	For each patient, implant supported mandibular hybrid prosthesis will be fabricated digitally. Frameworks will be tried in patient's mouth, scanned intraorally by intraoral scanner (IOS).

Timeline

• Start date: 2023-03-20
• Primary completion: 2024-05-07
• Completion: 2025-02-16
• First posted: 2023-09-15
• Last updated: 2025-08-14

Locations

1 site across 1 country: Egypt