Treatment of infrabony periodontal defects using a resorbable biopolymer of hyaluronic acid: A randomized clinical trial

This randomized clinical study examined the use of hyaluronic acid to treat infrabony periodontal defects over a period of 24 months. Method and Materials: Forty subjects with a two-wall infrabony defect (probing depth [PD] ≥ 7 mm; clinical attachment level [CAL] ≥ 7 mm) were selected. The defects were randomly divided Into two groups: sites treated with hyaluronic acid (test group) and those treated with open flap debridement (control group). Results: The 12- and 24-month evaluations were based on clinical and radiographic parameters. The primary outcome variable was CAL. Test defects shows a mean CAL gain of 1.9 ± 1.8 mm, while the control defects yielded a significantly lower gain of 1.1 ±0.7 mm. PD reduction was also significantly higher in the test group (1.6 ± 1.2 mm) than In the control group (0.8 ± 0.5 mm). Frequency distribution analysis of the study outcomes Indicated that hyaluronic acid increased the predictability of clinically significant results (CAL gains ≥ 2 mm and PD reduction ≥ 2 mm) In the test group compared with the controls. Conclusions: The treatment of infrabony defects with hyaluronic acid offered an additional benefit In terms of CAL gain, PD reduction, and predictability compared to treatment with open flap debridement. © 2013 by Quintessence Publishing Co Inc.