OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Periodontics Restorative Dent JT - International Journal of Periodontics & Restorative Dentistry IS - 1945-3388 (Electronic) IS - 0198-7569 (Print) IP - 6 VI - 15 PST - ppublish DP - 1995 PG - 575-590 LA - en TI - Periodontal healing after guided tissue regeneration with atrisorb barriers in beagle dogs FAU - Polson AU - Polson FAU - Southard AU - Southard FAU - Dunn AU - Dunn FAU - Polson AU - Polson FAU - Yewey AU - Yewey FAU - Swanborn AU - Swanborn FAU - Fulfs AU - Fulfs FAU - Rodgers AU - Rodgers CN - AB - Periodontal healing after use of Atrisorb barrier material (polylactic acid) for guided tissue regenreation was studied in the premolar and molar teeth of six beagle dogs. Defects studied were surgically induced or were caused by naturally occurring periodontitis. Barriers fragmented and became displaced in 2 to 5 weeks after application. Granulation tissue was sometimes present between the barrior and root surface at 10 days to 4 weeks. Several sites were surgically reentered at 4 months, and new bone covered 60% to 100% of the formarly exposed furcations and root surfaces. Sites obtained for histologic evaluation 9 to 12 months after the baseline surgery showed new connective tissue attachment, cementum, and alveolar bone. Histomorphometric analyses quantitated these tissue changes, and new connective tissue attachment covered 72% of surgically exposed root surfaces and 77% of periodontitis-exposed root surfaces. It was conlcuded that the new periodontal supporting tissues became reconstituted on root and furcation surfaces after use of the Atrisorb barrier material for GTR. AID - 852603