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Volume 14 , Issue 5
September/October 1994

Pages 437-450

Periodontal tissue response to a new bioresorbable guided tissue regeneration device: A longitudinal study in monkeys


PMID: 7751110
DOI: 10.11607/prd.00.0099

This study evaluated periodontal tissue response to a new bioresorbable guided tissue regeneration barrier material following guided tissue regeneration treatment of dehiscence-type defects at 45 teeth in 15 monkeys. The results were clinically and histologically evaluated 6 weeks and 3,6, 12, and 24 months posttreatment. Healing was uneventful and without inflammation or other adverse tissue reactions. Following 6 weeks of healing, the matrix barrier was completely integrated with the surrounding tissues, preventing epithelial downgrowth along the device. There were no inflammatory cell infiltrates adjacent to the material. New attachment (ie, new cementum with inserting collagen fibers) and new supporting bone were found after 6 weeks of healing. The matrix barrier maintained its functional stability for a minimum of 6 weeks. The subsequent slow resorption process of the material occurred without detrimental effects on the surrounding tissues, demonstrating the biocompatibility of the material. The material was completely resorbed after 6 to 12 months. At the final stages of the resorption process, macrophages and multinuclear cells were present within the tissue that replaced the material. The design and the resorption pattern of the matrix barrier are discussed in relation to the regenerative wound healing process.

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