Accuracy of Intraoral Photogrammetry vs Optical Scanners for Immediate Full-Arch Implant Loading

N/AActive Not RecruitingNCT07320729

Abdelrahman Khalaf Eldabe4 enrolled

Overview

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.

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 Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

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)

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).

Time frame: 3 Months

Secondary Outcomes

Effect of Arch Type on Digital Impression Trueness

The secondary outcome is to analyze the potential effect (correlation) of the type of arch (maxilla vs. mandible) on the degree of trueness. Also, the scanning time of the 2 techniques will be compared.