Erythritol vs Ultrasonic Scaler Prophylaxis Systems on Dental Implants With Crowns Made by Different Materials
The aim of the study is to assess which prophylaxis methods is the most suitable for peri-implant hygiene between erythritol and ultrasonic scaler with peek inserts.

A randomized clinical trial will be conducted on the patient. Patients will be randomly divided into two groups:

Erythritol group: erythritol with a particle size of ~14 µm will be used for 5 seconds (AIRFLOW® PLUS EMS)
Ultrasonic scaler group: a piezoelectric handpiece with peek inserts (Mini Piezon EMS; PI EMS) will be used.

Different subgroups will be defined according to the material of the dental crown of the related implant.

The oral hygiene session will be carried out every 6 months (2-years follow-up; 6 sessions), after instruction and motivation of the patient, completion of the clinical chart with the recording of the Probing Depth (evaluation in mm of the peri-implant sulcus taken by a periodontal probe; 4 surfaces of the gingival margin are detected: vestibular, palatal/lingual, mesial, distal), Bleeding on Probing and Plaque Index.
- EligibilityCriteria: Inclusion Criteria:  Age between 18 and 70 Presence of at least one dental implant Good compliance  Exclusion Criteria:  Patients with cardiac stimulators Patients with neurological disorders Patients with psychological disorders Pregnant women - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - MaximumAge: 70 Years - StdAgeList: Adult, Older Adult