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Intraoperative view, Group B: (a) Preoperative periodontal probing 6 mm from marginal gingiva to base of pocket; (b) Open osseous defect measurement; (c) Postoperative probing at 6 months postoperatively; (d) Preoperative intra oral peri apical (IOPA) X-ray showing intraosseous defect; (e) 6 months postoperative osseous defect regeneration
