Does probe material affect peri-implant probing accuracy?

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, parallel-group trial compares two probe materials (metallic UNC-15 vs plastic UNC-15) used for peri-implant probing around single-unit implants with a screw-retained crown. The primary outcome is the difference in probing depth with and without the prosthesis (Delta PD). Secondary outcomes include the impact of prosthetic design and implant position on probing and radiographic/clinical parameters, as well as patient-reported discomfort measured on a 100-mm visual analog scale. The study adheres to ID-COSM outcome domains and enrolls adults with functional implants for at least one year, presenting peri-implant health or mucositis. Conducted at the University of Barcelona and affiliated centers, the trial follows a randomized 1:1 allocation to metal or plastic probes during peri-implant probing procedures.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Adults (≥18 years)
* Presence of at least one single-unit bone-level implant rehabilitated with a screw-retained prosthesis directly connected to the implant (no intermediate abutment)
* Implant in function for at least 1 year after prosthetic loading
* No pathological bone loss on periapical radiograph (distance from the most coronal rough surface of the implant to the bone crest \< 3 mm)
* Ability to understand and sign informed consent
* Peri-implant health or mucositis, defined according to the 2017 World Workshop criteria:
* Health: no clinical signs of inflammation, lack of profuse (line or drop) bleeding on probing, no increase in probing depth compared to previous records, and no progressive bone loss beyond initial remodeling (\<2 mm). In the absence of previous radiographs, radiographic bone level \<3 mm without bleeding and/or suppuration on probing.
* Mucositis: presence of bleeding and/or suppuration on probing, no increase in probing depth compared to previous records, and no bone loss beyond initial remodeling (\<2 mm). In the absence of previous radiographs, radiographic bone level \<3 mm with bleeding and/or suppuration on probing.

Exclusion Criteria:

* Cement-retained restorations or prostheses that cannot be removed
* Systemic antibiotic or anti-inflammatory treatment within the previous 3 months
* Pregnancy or lactation
* Peri-implant treatment within the previous 3 months
* Participation in another clinical trial within the last 30 days

Where it's running

• Hospital Odontològic Universitat de Barcelona
  L'Hospitalet de Llobregat, Barcelona, Spain Recruiting

Study contacts

• Study coordinator: Octavi Camps Font, DDS MS PhD
• Email: ocamps@ub.edu
• Phone: +34 934 024 269

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.