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NCT07295899

Assessing the Influence of Implant Scanning Techniques on the Accuracy of Maxillary Complete-Arch Digital Scans for Implant Overdentures: A Comparative Clinical Study

Sponsor: National and Kapodistrian University of Athens

View on ClinicalTrials.gov

Summary

Recently different protocols have been developed for the implementation of intraoral scanning in full-arch implant workflows, as horizontal scan body scanning, 1 reverse scanning 2 and scan body systems with an integrated verification jig 3 . The aforementioned approaches are aiming to reduce the inaccuracies related with the implementation of intraoral scanners in full-arch implant cases and to improve the efficiency of the whole digital workflow. However the efficiency of these methods and the parameters that can influence their accuracy, as the design of the scan body have not been investigated. The purpose of the present in vivo study is to compare the trueness and the precision of the recorded implant's position, between conventional and novel implant acquisition protocols.

Official title: Evaluation of Impact of Implant Scanning Technique on the Accuracy of Maxillary Complete-arch Digital Scans for Implant-supported Overdentures

Key Details

Gender

MALE

Age Range

18 Years - Any

Study Type

OBSERVATIONAL

Enrollment

Start Date

2025-12-15

Completion Date

2026-01-15

Last Updated

2025-12-22

Healthy Volunteers

Yes

Conditions

Maxillary Complete-arch Digital Scans for Implant-supported Overdentures

Interventions

DEVICE

Intraoral scanning

Different designs of scanbodies will be used

Inclusion Criteria: 4 implants places in fully edentelous patient that is planned to be treated with implant supported overdenture \- Exclusion Criteria: Diseases / Conditions That Can Contraindicate Dental Treatment 1. Uncontrolled Systemic Conditions Dental procedures-especially invasive ones-are often postponed if the condition is not medically stable: • Uncontrolled Hypertension BP typically \>180/110 mmHg is considered unsafe for elective dental care. Risk: stroke, heart attack during treatment. • Uncontrolled Diabetes High blood glucose (e.g., \>300 mg/dL) increases infection risk and poor healing. • Uncontrolled Thyroid Disease Hyperthyroidism raises risk of thyroid storm, especially with epinephrine. 2. Recent Major Cardiac Events Elective dental treatment is usually deferred for: * Heart attack (MI) within past 6 months * Stroke within past 6 months * Unstable angina * Severe arrhythmias * Decompensated heart failure These conditions can make dental stress or anesthesia dangerous. 3. Infectious Diseases (Active Phase) Dental treatment may be delayed to protect the patient or others. * Active Herpetic Lesions (Cold Sores) around the mouth * Active Tuberculosis (TB) * COVID-19 or other acute respiratory infections with fever 4. Hematologic Disorders If blood does not clot properly, dental surgery can be risky. • Severe Thrombocytopenia Platelets too low for safe extraction or surgery. • Hemophilia or bleeding disorders Require management with a hematologist first. • Patients on certain anticoagulants (e.g., warfarin with very high INR) May need medical adjustment before invasive care. 5. Pregnancy (Certain Situations) Most dental care is safe, but some procedures are postponed: Elective treatments during 1st trimester Avoid certain medications (e.g., some anesthetics, antibiotics, NSAIDs) Severe hypertension or pregnancy complications (eclampsia) 6. Severe Psychiatric Conditions (Unstable) When a patient cannot cooperate safely: Acute psychosis Severe anxiety uncontrolled by medication Need medical stabilization vs. dental sedation coordination 7. Substance Intoxication Dental care is not performed if patient is intoxicated with: Alcohol Recreational drugs (especially stimulants like cocaine or meth) Risk of cardiovascular events or inability to consent.