Effect of Probe Material on Peri-implant Probing (METPLA-PP)

University of Barcelona

Status

Not yet enrolling

Conditions

Peri-implant Health

Peri-implant Mucositis

Treatments

Device: Metallic UNC-15 periodontal probe

Device: Plastic UNC-15 periodontal probe

Study type

Interventional

Funder types

Other

Identifiers

NCT07304752

57/2025

Details and patient eligibility

About

Evaluate whether the type of probe (plastic vs. metallic) modifies the accuracy of peri-implant probing in single-unit implants, by comparing the probing depth recorded with the prosthesis in place versus without the prosthesis (ΔPD, mm). Secondarily, explore the influence of prosthetic design and implant position on probing values and on other clinical and radiographic parameters.

Full description

Randomized clinical trial with two parallel groups. Eligible patients will be randomized (1:1 ratio) to one of two parallel treatment groups:

Group 1 (Metal probe): Peri-implant probing performed with a UNC-15 metallic periodontal probe (HuFriedy PCPUNC156).

Group 2 (Plastic probe): Peri-implant probing performed with a UNC-15 plastic periodontal probe (HuFriedy PCVO12PT).

Primary objective:

To evaluate whether the type of probe (plastic vs metallic) modifies the accuracy of peri-implant probing in single-unit implants, by comparing the probing depth recorded with the prosthesis in place versus without the prosthesis (ΔPS, mm).

Secondary objectives:

To explore the influence of prosthetic design (e.g., emergence profile, crown contour) and implant position on probing depth values and other clinical/radiographic parameters.

To evaluate patient-reported discomfort during peri-implant probing, recorded using a 100-mm visual analogue scale (VAS).

The study was designed in accordance with the international consensus on Implant Dentistry Core Outcome Set and Measurement (ID-COSM), published in the Journal of Clinical Periodontology in 2023. The protocol includes all applicable mandatory outcome domains recommended by this consensus for implant dentistry clinical trials.

Enrollment

64 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

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