NCT06033859

Incidence of Bleeding on Probing as an Indicator of Peri-Implant Disease Progression

Incidence of Bleeding on Probing as an Indicator of Peri-Implant Disease Progression: A Prospective Study

• Status: Enrolling By Invitation
• Phase: —
• Study type: Observational
• Enrollment: 150 (estimated)
• Sponsor: University of Pittsburgh · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Accepted

Summary

The primary goal of the present prospective cohort study is to evaluate the effect of varying incidences of BOP at implant sites across 15 months of maintenance visits on the probability of peri-implant disease progression. Over 15 months, participants will attend 6 visits where clinical measurements and maintenance care will be performed every 3 months.

Detailed description

Screening/Baseline/Maintenance Visit 1 (V1) After participants have consented, their health history will be reviewed, and their vitals including blood pressure and heart rate will be recorded. A dental exam of the teeth and gums will be completed. During this exam, a UNC 15 periodontal probe will be used to perform the clinical assessments. Intraoral photographs will be taken. An x-ray of the implant(s) included in the study will be taken using a customized x-ray holder (created during Visit 1) so that at the end of the study, a final x-ray will be taken in the exact same position. Finally, each participant will receive a dental prophylaxis (D1110) or maintenance (D4910) according to their prior periodontal diagnosis. Maintenance Visits 2-6 (V2-V6) Participants will return in 3-month intervals at approximately 3, 6, 9, 12, and 15 months (+/- 10 days) for Study Visits V2 - V6. At each of these visits, individuals will be asked about continued participation in the study. Participants will also be asked if there have been any changes to medical or dental history and if they are taking any new medications. Intraoral photographs of the study area will be performed, as well as, collecting measurements from around the dental implant(s), and providing regular dental cleaning. At the 15 month visit, a final x-ray will be taken using the custom x-ray holder made at the first visit. Clinical and radiographic assessments will include: 1. BOP: at each of the 4 measured locations surrounding the implant of interest will be recorded as follows: 1. Score 0 - No BOP 2. Score 1 - Bleeding dot 3. Score 2 - Continuous line of blood that fills the sulcus 4. Score 3 - Profuse bleeding and/or hemorrhage drip. 2. Probing depths (PD): at 4 locations surrounding the implant of interest (mesiolingual (ML), mesiobuccal (MB), distolingual (DL), and distobuccal (DB)). PD increase must exceed a threshold of 0.8mm to be considered progression. 3. Recession: measured at each of the 4 locations surrounding the implant of interest. 4. Keratinized mucosa width: measured at the midbuccal aspect of the implant(s). 5. Mucosal thickness: assessed with the aid of an endodontic spreader, 2mm below the mucosal margin, at the midbuccal aspect of the implant(s). 6. Marginal bone loss (MBL): measured by overlaying the baseline and final radiographs and measuring the change in marginal bone levels. Progression will have to exceed a threshold of 0.5mm to be considered.

Conditions

• Peri-Implantitis
• Bleeding of Subgingival Space

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Clinical measurements	With the aid of a periodontal probe, the incidence of BOP, as well as PD, recession and KM will be assessed.
DIAGNOSTIC_TEST	Radiographic measurement	A standardized periapical radiograph of the implant will be completed at the beginning and the end of study to determine the marginal bone loss.
PROCEDURE	Dental prophylaxis or maintenance	Dental prophylaxis or maintenance will be performed every 3 months.

Timeline

• Start date: 2023-09-11
• Primary completion: 2027-12-01
• Completion: 2027-12-01
• First posted: 2023-09-13
• Last updated: 2025-10-10

Locations

1 site across 1 country: United States