Reject Analysis of Periapical Radiographs of Dental Implants.

NCT07876687 — Active not recruiting, 49 participants, University Ghent

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Reject Analysis in Digital Dental Radiology: Diagnostic Quality Analysis of Peri-apical Radiographs of Dental Implants.

Registry	NCT07876687, acronym RA1-2025
Status	Active not recruiting
Study type	Observational
Enrollment	49 (Actual)
Sponsor	University Ghent (Other)
Conditions	Healthy
Dates	start 2026-01-01, primary completion 2026-12-31 (estimated), completion 2027-07-01 (estimated), first posted 2026-10-15, last updated 2026-10-15
Locations	1 site in Belgium

-Summary

Periapical radiographs of dental implants, acquired as part of two ongoing research projects, will be retrospectively analyzed using a newly developed image quality scoring form. Following an initial classification (Excellent - Acceptable - Rejected), a detailed assessment of the various image quality criteria and any deviations from these criteria will be performed. In addition, the frequency with which radiographs had to be retaken to obtain a diagnostically acceptable image will be evaluated. The influence of anatomical factors (e.g., implant location in the mouth, maxilla or mandible, etc.) and the use of individualized radiographic holders will also be assessed.

Through this retrospective analysis of an existing dataset of implant radiographs, the study aims to identify the factors that have influenced image quality, the ability to accurately assess the surrounding bone level, and the need for repeat radiographic exposures. The findings may contribute to the development of guidelines to improve the quality of periapical radiographs and potentially reduce radiation exposure for patients.

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+Arms and interventions

Arm	Type	Interventions	Description
Patients having received dental implants used for a bar-retained overdenture.			Patients were treated with either 4 implants in the upper jaw or 2 implants in lower jaw as part of 2 running research projects. Periapical radiographs taken during these investigations will be analysed retrospectively .

+Outcome measures

Primary outcomes

Rejection classification [Through study completion, an average of 1 year.]: The percentage of periapical radiographs classified as qualitatively excellent, acceptable or unacceptable.
Repeat rate [Through study completion, an average of 1 year.]: Number of radiographs which were actually repeated as result of unacceptable quality.
Interexaminer reproducibility of the reject analysis. [Through study completion, an average of 1 year.]: The degree of agreement between different examiners when classifying radiographs as rejected, acceptable or excellent, and when identifying the reasons for rejection according to the quality assessment criteria.
Intra-examiner reproducibility [Through study completion, an average of 1 year.]: The degree of agreement within the different examiners when classifying radiographs as rejected, acceptable or excellent, and when identifying the reasons for rejection according to the quality assessment criteria.

Secondary outcomes

Qualitative error classification [Through study completion, an average of 1 year.]: Frequency analysis of errors resulting in the rejection of the radiographs.

+Eligibility

Sex: All, accepts healthy volunteers

Inclusion Criteria:

Patients which were treated with dental implants for a bar-retained overdenture in the upper - or lower jaw, as part of two running investigations.

Fully edentulous for minimally 4 months; Adequate bone volume to receive two or 4 implants

Exclusion Criteria:

<21 years old; Smoking

+Locations (1)

Facility	City	Country	Status
Oral Health Sciences - Department of Periodontology and Oral Implantology - P8	Ghent, Oost-Vlaanderen	Belgium

+Investigators

Véronique Christiaens, Prof. Dr., Principal investigator, Department of Periodontology & Oral Implantology, Faculty of Medicine and Health Sciences