The periodontal guided tissue regeneration (GTR) is a new treatment on periodontal disease.Biodegradable GTR Barrier has a compound structure with fabric inside and coating outside.

• 牙周再生是近年来一种新兴的牙周治疗技术,所用牙周再生片内层为织物,外层为涂层,对其工艺参数的研究尚处于起步阶段。