Abstract
Evaluation of the effectiveness of regenerative treatment of intra-bony defects in combination with consecutive orthodontic tooth movements in stage IV periodontitis. A total of 526 intra-bony defects in 48 patients were analyzed after regenerative therapy using collagen-deproteinized bovine bone mineral with or without collagen membrane or enamel matrix derivative followed by orthodontic tooth movement initiated 3 months after surgery. Changes in radiographic bone levels (BL) and probing pocket depths (PPD) were evaluated after 1 year and up to 4 years. Tooth loss amounted to 0.57%. Mean BL gain was 4.67mm (±2.5mm) after 1 year and 4.85mm (±2.55mm) after up to 4 years. Mean PPD was significantly reduced from 6.00mm (±2.09mm) at baseline to 3.45mm (±1.2 mm) after 1 year, and to 3.12mm (±1.36mm) after 2 - 4 years. Pocket closure (PPD ≤ 4 mm) was accomplished in 87 % of all defects. Adjunctive antibiotic therapy did not show any statistically significant impact on treatment outcomes. Within the limits of this retrospective study design, the findings suggest that the combination of regenerative treatment and consecutive orthodontic tooth movements resulted in favorable results up to 4 years.
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