The Study on the Accuracy of Peri-implant Probing and Related Influencing Factors

NCT07004517 · tracked via the Priya Life Science China tracker

Sponsor

The Dental Hospital of Zhejiang University School of Medicine

Phase

Observational

Started

2024-01-11

Last updated

2025-06-04

Condition(s) studied

Peri-ImplantitisDiagnosis

Investigational drug(s) / intervention(s)

peri-implant probing before and after crown removal

peri-implant probing before and after crown removal: Before removal of the prosthetic reconstruction: * Measurement of PPD-1: The PPDs at 6 site were measured as the distance from the mucosal margin to the base of the peri-implant pocket. * Measurement of BOP-1：Bleeding sites after gentle probing within 15s were recorded as BOP scores. A positive score (1 point) was recorded if bleeding was observed during either of probing assessment by two researchers. After removal of the prosthetic reconstruction, PPD-2 and BOP-2 were recorded following the same protocol.

Study summary

The aim of the diagnostic accuracy study was to compare the diagnostic accuracy of probing depth before (PPD-1) and following (PPD-2) the removal of prothesis in identifying the presence of peri-implantitis and assess the factors influencing peri-implant probing.

Eligibility

Sex

ALL

Min age

18 Years

Max age

90 Years

Healthy volunteers

Inclusion Criteria: 1. Age greater than 18 years. 2. The implant has completed osseointegration and has undergone final restoration for at least one month. 3. The final restoration needs to be removed or retrieved for various reasons. Exclusion Criteria: * Patients with serious systemic diseases, severe intraoral infections, severe mental disorders, pregnancy/lactation in women, or other conditions that make oral treatment operations unsuitable. * History of crown removal or re-restoration within the past month prior to the visit. * The prosthesis has fallen off or is severely damaged and has lost its original form before the visit. * The prosthesis cannot be completely removed. * Refusal to participate in this study.

Primary outcome measure(s)

probing depth — On the day of enrollment
The PPDs at 6 site were measured as the distance from the mucosal margin to the base of the peri-implant pocket.

Trial sites (1)

Facility	City	Region	Status
The Affiliated Stomatology Hospital of Zhejiang University School of Medicine	Hangzhou	Zhejiang	Recruiting

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07004517 on ClinicalTrials.gov ↗ ← All trials in China