Guided tissue regeneration in Class II furcation defects using a resorbable polylactic acid barrier
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Laerte L Bremm1, Antonio W Sallum, Marcio Z Casati
1Dept. of Prosthodontics and Periodontics, School of Dentistry at Piracicaba, University of Campinas, SP, Brazil.
Purpose:
To evaluate, clinically, the use of guided tissue regeneration (GTR) with a resorbable polylactic acid membrane (Atrisorb) in the treatment of Class II furcation defects in humans.
Methods:
The study included 10 patients with two comparable Class II furcations in lower molars. The lesions were randomly assigned to one of the treatments: GTR with an Atrisorb resorbable membrane (test) or open flap debridement (control). The following clinical parameters were recorded before the surgeries (baseline) and after a healing period of 6 months: relative vertical clinical attachment level, relative horizontal clinical attachment level, probing depths, position of the gingival margin and width of the keratinized tissue.
Results:
After the intra-group comparison (baseline versus 6 months), statistically significant differences were found for the parameters: probing depth, relative vertical clinical attachment level and relative horizontal clinical attachment level, in both groups (P < 0.05). Comparing the two groups, a statistically significant difference was found in the probing depth reduction favoring the GTR group (P < 0.05). No significant differences were found in the other parameters.