Abstract
To present the safety profile, the early healing phase and the clinical outcomes at 24 weeks following treatment of human intrabony defects with open flap debridement (OFD) alone or with OFD and rhGDF-5 adsorbed onto a particulate β-tricalcium phosphate (β-TCP) carrier. Twenty chronic periodontitis patients, each with at least one tooth exhibiting a probing depth ≥6 mm and an associated intrabony defect ≥4 mm entered the study. Ten subjects (one defect/patient) were randomized to receive OFD alone (control) and ten subjects OFD combined with rhGDF-5/β-TCP. Blood samples were collected at screening, and at weeks 2 and 24 to evaluate routine hematology and clinical chemistry, rhGDF-5 plasma levels, and antirhGDF-5 antibody formation. Plaque and gingival indices, bleeding on probing, probing depth, clinical attachment level, and radiographs were recorded pre- and 24 weeks postsurgery. Comparable safety profiles were found in the two treatment groups. Neither antirhGDF-5 antibody formation nor relevant rhGDF-5 plasma levels were detected in any patient. At 6 months, treatment with OFD + rhGDF-5/β-TCP resulted in higher but statistically not significant PD reduction (3.7 ± 1.2 vs. 3.1 ± 1.8 mm; p = 0.26) and CAL gain (3.2 ± 1.7 vs. 1.7 ± 2.2 mm; p = 0.14) compared to OFD alone. In the tested concentration, the use of rhGDF-5/β-TCP appeared to be safe and the material possesses a sound biological rationale. Thus, further adequately powered, randomized controlled clinical trials are warranted to confirm the clinical relevance of this new approach in regenerative periodontal therapy. rhGDF-5/β-TCP may represent a promising new techology in regenerative periodontal therapy.
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Sources of funding
This study was supported by a grant from Scil Technology GmbH, Martinsried, Germany.
Conflict of interest statement
Dr. Capsius is an employee of Scil Technology GmbH, Martinsried, Germany. Dr. Wikesjö is a consultant to Scil Technology GmbH. Drs. Sculean and Stavropulos received a grant from Scil Technology GmbH to conduct this study. Drs. Windisch, Molnár, Szendröi-Kiss, Szilágyi, Rosta, and Horváth report no finacial or other conflicting relationship to any products involved in this study.
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Windisch, P., Stavropoulos, A., Molnár, B. et al. A phase IIa randomized controlled pilot study evaluating the safety and clinical outcomes following the use of rhGDF-5/β-TCP in regenerative periodontal therapy. Clin Oral Invest 16, 1181–1189 (2012). https://doi.org/10.1007/s00784-011-0610-3
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DOI: https://doi.org/10.1007/s00784-011-0610-3