Effect of Scanning Technology on Internal Fit of Digitally Customized Intra-radicular Attachments

April 20, 2026 updated by: Nancy Adel, October 6 University

Evaluation of Marginal and Internal Fit of Intraradicular Attachments Fabricated byDirect &Indirect Scanning Techniques

This study aims to evaluate the marginal and internal fit of intra-radicular attachments fabricated by direct scanning using two different intraoral scanners compared to indirect scanning of conventional impressions.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

This study evaluates the marginal and internal fit of intra-radicular attachments fabricated using different techniques. It compares direct digital scanning with two intraoral scanners and indirect scanning using conventional impressions. The aim is to determine which method provides better adaptation and accuracy, and whether there are differences between the two scanners in achieving clinically acceptable fit.

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Endodontically treated teeth requiring intraradicular attachments.
  • Adequate oral hygiene.
  • Partially edentulous cases where compromised remaining teethcannot serve as abutments for traditional removable partial dentures (RPDs). -
  • Periodontally compromised teeth that can still be maintainedasoverdenture abutments with proper treatment.

Exclusion Criteria:

  1. Severely compromised remaining teeth with poor prognosis duetoextensive decay or severe periodontal disease.
  2. Severe bone loss around abutment teeth.
  3. Severe malocclusion making overdenture placement difficult.
  4. Limited inter-arch space that cannot accommodate overdenturecomponents. 5. Poor oral hygiene increasing the risk of decay or periodontal issues.

6. Patients medically unfit for any surgical procedure.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Indirect technique for conventional impression
Procedure: conventional impression
indirect scanning for conventional impression
Experimental: Direct scanning by intraoral scanner A
Device: Intraoral scanner
Use of an intraoral scanner to obtain digital impressions for the fabrication of intra-radicular attachments. Two different intraoral scanners will be used to capture digital data of the prepared tooth, and the resulting scans will be used to fabricate the attachments through a CAD/CAM workflow. The accuracy of the fit will be evaluated and compared with conventional impression techniques.
Experimental: Direct scanning by intraoral scanner B
Device: Intraoral scanner
Use of an intraoral scanner to obtain digital impressions for the fabrication of intra-radicular attachments. Two different intraoral scanners will be used to capture digital data of the prepared tooth, and the resulting scans will be used to fabricate the attachments through a CAD/CAM workflow. The accuracy of the fit will be evaluated and compared with conventional impression techniques.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Marginal and internal fit evaluated using software.
Time Frame: Immediately after scanning
Immediately after scanning

Secondary Outcome Measures

Outcome Measure
Time Frame
Time control, the time taken for each scanningor impression-taking process will be recorded in seconds using a stopwatch.
Time Frame: During scanning
During scanning

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

October 6 University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

April 30, 2026

Primary Completion (Estimated)

April 30, 2026

Study Completion (Estimated)

July 30, 2026

Study Registration Dates

First Submitted

April 13, 2026

First Submitted That Met QC Criteria

April 13, 2026

First Posted (Actual)

April 21, 2026

Study Record Updates

Last Update Posted (Actual)

April 23, 2026

Last Update Submitted That Met QC Criteria

April 20, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Intraradicular attachment fit

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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