Study design:~This study was designed as a 12-month, two arms, RCT to evaluate the efficacy of a SPIC protocol. Thirty patients were randomized, six months after access-flap surgery, in two different SPIT groups. After ultrasonic debridement, the affected implant surfaces of the test group were treated with glycine powder air-polishing, while implants in the control group a rubber cup and polishing paste was used. Maintenance visits were carried every 3 months and clinical, radiological, microbiological and biochemical variables were registered at baseline (6 months after surgery) and after a follow-up period of 12 months (18 months after surgery).~Interventions:~At the 6-month evaluation after the surgery, the baseline data for the present study were obtained and patients were randomised using a computerized block randomization protocol to one of the following SPIC protocols. In the test group, implant surfaces were treated with glycine powder air-polishing after ultrasonic instrumentation; the specific nozzle was activated subgingivally and circumferentially around the implant for 1 minute. In the control group, implants were cleaned with a rubber cup and polishing paste after ultrasonic instrumentation. This SPIC visits were carried out at 6 (baseline visit), 9, 12, 15 and 18 months after surgery.
This study was designed as a 12-month, two arms, randomized clinical trial to evaluate the efficacy of a supportive treatment protocol (SPIT). Thirty patients were randomized, six months after access-flap surgery, in two different SPIT groups. After ultrasonic debridement, the affected implant surfaces of the test group were treated with glycine powder air-polishing, while implants in the control group a rubber cup and polishing paste was used. Maintenance visits were carried every 3 months and clinical, radiological, microbiological and biochemical variables were registered at baseline (6 months after surgery) and after a follow-up period of 12 months (18 months after surgery).