Crown Removal in Non-Surgical Peri-Implantitis Therapy: A Randomized Trial

Effectiveness of Non-Surgical Mechanical Therapy of Peri-Implantitis With or Without Prosthetic Crown Removal: A Randomized Controlled Trial

The aim of this single-blind, randomized controlled clinical trial is to evaluate whether removal of the prosthetic crown influences the clinical effectiveness of non-surgical mechanical therapy in implants affected by peri-implantitis.

The study is designed to compare changes in several clinical and radiographic parameters between baseline and follow-up examinations at 3, 6, and 12 months. The primary outcome measure will be the mean peri-implant probing depth (PIPD). Secondary outcomes will include changes in gingival recession (REC), radiographic marginal bone level (MBL), modified bleeding index (mBI), and additional patient-related variables.

Inclusion Criteria:

• Patients with at least one implant diagnosed with peri-implantitis (Berglundh et al., 2018);
• Patients with a crown on the implant affected by peri-implantitis that is removable;
• Patients who have not received non-surgical peri-implant therapy in the previous 6 months;
• Patients who have not taken systemic antibiotic therapy in the previous 3 months.

Exclusion Criteria:

• Full-Mouth Plaque Score (FMPS) > 30% at the time of non-surgical therapy;
• Pregnant or breastfeeding women;
• Relevant medical history, in the opinion of the examining clinician, that could affect the outcome of non-surgical peri-implant therapy;
• Smoking patients consuming > 10 cigarettes/day.