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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

4 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-07

Study Completion Date

2026-05-01

Brief Summary

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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.

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Detailed Description

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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.

Conditions

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Edentulism Implant-supported Full-arch Prosthesis Digital Impression Accuracy Photogrammetry in Dentistry

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Intraoral Optical Scanner (IOS)

Participants will undergo a digital implant impression using a conventional intraoral optical scanner immediately after implant placement to capture implant positions for immediate full-arch loading.

Group Type EXPERIMENTAL

Intraoral Optical Scanner

Intervention Type DEVICE

Digital intraoral scanning of implant positions using standard scan bodies for complete-arch implant impressions.

Intraoral Photogrammetry Scanner (IPS)

Participants will undergo a digital implant impression using an intraoral photogrammetry scanner immediately after implant placement to capture implant coordinates using photogrammetric scan flags combined with intraoral soft tissue scanning.

Group Type EXPERIMENTAL

Intraoral Photogrammetry Scanner Elite (Shining3D)

Intervention Type DEVICE

Intraoral photogrammetric capture of implant coordinates using scan flags, combined with soft tissue scanning, without stitching.

Interventions

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Intraoral Optical Scanner

Digital intraoral scanning of implant positions using standard scan bodies for complete-arch implant impressions.

Intervention Type DEVICE

Intraoral Photogrammetry Scanner Elite (Shining3D)

Intraoral photogrammetric capture of implant coordinates using scan flags, combined with soft tissue scanning, without stitching.

Intervention Type DEVICE

Eligibility Criteria

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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.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes