Can Intraoral Photogrammetry Overcome Surgical Field Challenges? An In-Vivo Accuracy Study in Immediate Full-Arch Loading
Overview
- Phase
- Not Applicable
- Status
- Active, not recruiting
- Sponsor
- Abdelrahman Khalaf Eldabe
- Enrollment
- 4
- Locations
- 1
- Primary Endpoint
- Trueness of Implant Position (3D Euclidean Deviation)
Overview
Brief Summary
This prospective in vivo clinical trial evaluates and compares the accuracy (trueness) and scanning time of intraoral photogrammetry scanners (IPS) versus conventional intraoral optical scanners (IOS) for immediate full-arch implant impressions. The reference standard will be a verified conventional splinted open-tray impression taken at the uncovering stage. Sixty edentulous arches receiving 4-6 implants will be included. Linear, angular, and 3D Euclidean deviations will be calculated to assess accuracy.
Detailed Description
Digital impression systems are widely used for implant dentistry, but complete-arch implant scans remain challenging due to lack of stable landmarks and intraoral movement. Photogrammetry technology captures implant coordinates with high trueness by eliminating stitching errors and excluding unstable soft tissue. A newly introduced intraoral photogrammetry scanner (IPS) integrates photogrammetry and intraoral imaging in a single device.
This study is the first in-vivo prospective clinical trial comparing IOS and IPS accuracy in immediate complete-arch implant loading. Patients receiving 4-6 implants in one arch will undergo two digital impressions immediately after surgery: one using IOS (AoralScan 3) and one using IPS (Elite). A conventional splinted open-tray impression at second-stage surgery will be used as the reference model. Digital files will be superimposed to calculate linear, angular, and 3D (Euclidean) deviations. Scanning time and effect of arch type will also be evaluated.
Study Design
- Study Type
- Interventional
- Allocation
- Non Randomized
- Intervention Model
- Crossover
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Completely edentulous arch to receive 4-6 implants. Candidate for immediate loading with a one-piece fixed prosthesis. ASA I or II medically healthy patients. Patient able to attend follow-up visits and sign informed consent.
Exclusion Criteria
- •Medically compromised patients (ASA III or higher). Poor oral hygiene or heavy smokers. Insufficient bone volume for implant placement. Uncooperative patients or those refusing participation.
Outcomes
Primary Outcomes
Trueness of Implant Position (3D Euclidean Deviation)
Time Frame: 3 Months
The primary outcome is to evaluate the clinical performance of conventional intraoral scanners (IOS) and intraoral photogrammetry scanners (IPS) in immediate complete arch implant loading for each patient enrolled in the study, with a paired comparison of the deviation differences (Degree of Trueness).
Secondary Outcomes
- Effect of Arch Type on Digital Impression Trueness(3 Months)
Investigators
Abdelrahman Khalaf Eldabe
Lecturer of Oral Medicine and Periodontology , Assiut University
Assiut University