This study was designed to investigate the use of minimally invasive Piezo knife to harvest vascularized interceptal bone pedicle in treating intrabony defects.

Sixteen non-smoking patients with severe chronic periodontitis participated in this prospective, randomized clinical study. Patients were randomly assigned into one of a 2 groups (8 patients each): bone substitute grafting of the intrabony defect, control group (Gr1), intrabony defect osseous wall swaging (OWS) combined xenograft (Gr2). In both groups root surfaces where treated with a neutral 24% EDTA gel and saline irrigation. Clinical and radiographic measurements were reassessed at 6 months after surgery.

Inclusion Criteria:

1. good compliance with plaque control instructions following initial therapy
2. teeth involved were all vital with no mobility ;
3. each subject contributed a single predominately 2 or 3-wall intrabony interproximal defect around premolar or molar teeth without furcation involvement;

Exclusion Criteria:

1. no systemic diseases which could influence the outcome of therapy;
2. absence of periodontal treatment during the previous year.

institutional review board, egypt