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Accuracy of Complete-Arch Implant Scans Using Non Calibrated Splinting Scanbodies

Sponsor: Menoufia University • ClinicalTrials.gov ID: NCT07862218

Registry updated: 2026-10-13

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Description

This randomized crossover clinical study will evaluate and compare the accuracy and chairside time of two non-calibrated splinting systems, IoConnect and Scan Pro, for obtaining complete-arch implant digital scans. The study will include completely edentulous patients with four well-integrated implants connected to multiunit abutments. Each participant will undergo complete-arch implant scanning using both systems, with the order of the scanning protocols determined by a computer-generated randomization sequence. The digital scans obtained with each system will be compared with a verified conventional implant impression used to establish a reference model. The primary evaluation will focus on the accuracy of the implant scans by assessing linear and angular discrepancies between each experimental scan and the reference model. Chairside time required for the scanning procedures will also be recorded. The study will determine whether differences exist between the two non-calibrated splinting systems in terms of complete-arch implant scan accuracy.

Interventions

Scan Pro (Device)
Complete-arch implant scanning using the Scan Pro noncalibrated splinting system and an intraoral scanner. The scan bodies are connected using adjustable arms to provide optical splinting, and the resulting digital impression is exported as an STL file for accuracy assessment.
IoConnect (Device)
Complete-arch implant scanning using the IoConnect noncalibrated splinting system and an intraoral scanner. The workflow includes acquisition of peri-implant soft-tissue anatomy followed by acquisition of the horizontal optical markers. The datasets are merged using the dedicated software to generate the final digital implant impression.

Eligibility criteria

Inclusion Criteria * Adults aged 18 years or older. * Completely edentulous maxilla or mandible. * Four clinically stable and osseointegrated implants restored with multiunit abutments. * Patients with a screw-retained interim prosthesis or patients scheduled to receive a definitive complete-arch implant-supported prosthesis. * Ability to undergo intraoral scanning procedures and provide written informed consent. Exclusion Criteria * Fewer or more than four implants in the evaluated arch. * Failed or clinically unstable implants. * Active peri-implant infection or suppuration. * Limited mouth opening that prevents completion of the intraoral scanning procedures. * Inability or unwillingness to provide written informed consent.

Conditions

Edentulism Complete

Locations

Faculty of Dentistry, Menoufia University — Shibīn al Kawm, Menoufia, Egypt

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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