Evaluation of Durapatite Ceramic as an Alloplastic Implant in Periodontal Osseous Defects: II. Twelve Month Reentry Results

Abstract
Thirteen patients received Durapatite, a hydroxylapatite ceramic (Periograf®), as a bone implant material in various types of intrabony defects following internally beveled full thickness flaps, root planing, and defect debridement. All osseous margins and defects were measured from the cemento‐enamel junction (CEJ) at specific locations using a standardized periodontal probe. Similarly debrided, nonimplanted defects served as controls. Defect selection as either experimental or control site was based on an alternating defects design after local therapy was completed. Periodontal dressing and systemic tetracycline were used for 10 days. Postsurgical visits for documentation and plaque control were at 10, 20 and 30 days, and 3, 6, 9 and 12 months. Measurements relating to defect changes were made at the 12‐month surgical reentry. For evaluation purposes original defect depths were divided into three groups. In Group I (P < 0.05). In Group II (3– 6 mm) defect fill of 1.7 mm (44%) for implanted sites was significantly better (P < 0.05) than the 0.8 mm (29%) found in control sites. In the deepest group (Group III, >6 mm) Durapatite placement yielded 2.1 mm (32%) of defect fill while debridement alone resulted in 1.8 mm (26%) of fill (P > 0.05). Hard tissue responses demonstrated a substantial advantage for use of Durapatite over controls, while soft tissue changes were similar for both. The findings of this study indicate that Durapatite use resulted in greater fill of periodontal osseous defects than debridement alone at 1 year postsurgically. However, one must be cautious in comparing clinical studies of this type, and put small numerical differences even if statistically significant into proper biologic perspective. Furthermore, whereas the findings suggest that the use of Durapatite will generally be the better treatment in a given patient, it is not universally more beneficial. Occasionally, the debridement‐only defects outperformed or had similar results as the grafted areas.

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