Baek Seung-Ho, Plenk Hanns, Kim Syngcuk
Department of Conservative Dentistry, College of Dentistry, Seoul National University, Korea.
J Endod. 2005 Jun;31(6):444-9. doi: 10.1097/01.don.0000148145.81366.a5.
The purpose of this study was to compare the periapical tissue responses and cementum regeneration in response to three widely used root-end filling materials, amalgam, SuperEBA, and Mineral Trioxide Aggregate (MTA). These materials were placed using modern microsurgical techniques on endodontically treated dog premolars and molars. After 5 months, the cell and tissue reactions of surface-stained un-decalcified ground sections were evaluated by light microscopy and statistically analyzed. The major difference in the tissue responses to the three retrofilling materials were the degree of inflammation and types of inflammatory cells, number of fibrous capsule formations, cementum neoformation over these materials, osseous healing and resulting periodontal ligament thickness. MTA showed the most favorable periapical tissue response, with neoformation of cemental coverage over MTA. SuperEBA was superior to amalgam as a root-end filling material.
本研究的目的是比较三种广泛使用的根尖充填材料，即汞合金、SuperEBA和三氧化矿物凝聚体（MTA）对根尖周组织的反应及牙骨质再生情况。采用现代显微外科技术将这些材料放置于经根管治疗的犬前磨牙和磨牙上。5个月后，通过光学显微镜对表面染色的未脱钙磨片的细胞和组织反应进行评估，并进行统计学分析。三种根尖倒充填材料在组织反应上的主要差异在于炎症程度、炎症细胞类型、纤维囊形成数量、这些材料上牙骨质的新生情况、骨愈合情况以及由此导致的牙周膜厚度。MTA显示出最有利的根尖周组织反应，MTA上有牙骨质覆盖新生。作为根尖充填材料，SuperEBA优于汞合金。
