摘要
实验用云南白药、银汞合金、羟基磷灰石和氢氧化钙分别修复犬牙实验性髓室底穿孔，经１、４、８、１２周的组织学观察，结果云南白药优于其他三种材料，穿孔区牙周组织的炎症反应较轻，牙本质、牙骨质和牙槽骨吸收亦较轻，局部并见有骨样组织和类牙骨质组织的沉积。
Yunnan Baiyao (YNBY), amalgam, hydroxylapatite and calcium hydroxide were used seperately in repairing the experimental pulp chamber floor perforation (PCFP) of dog teeth. The animals were killed at the time of 1, 4, 8 and 12 weeks after experiment. The experimental teeth with periapical tissue were removed and observed their histological changes by optical microscope. The effects that different materials in repairing the tissue of PCFP were observed. Twenty teeth were taken from every dog, each group contained four teeth, the others were used for control group.Results: In initial period (1st,4th week) inflammatory infiltration was present in PCFP of every group,but the group with YNBY was milder. Pyogenic foci were present in the hydroxylapatite and calcium hydroxide groups. In late stage of experiment (8th and 12th week) inflammatory reactions of each group were alleviated except control group. Epithelial metaplasia and cicatritation were found in the vicinity of perforated area. Dentin cementum and alveolar bone were absorbed in majority of experimental group.It was also observed in the group with YNBY.But in late stage simi lar cementum formation and alveolar bone neogenesis were found in the perforated area around the repairing materials. It revealed that hemostasis, Promoting Blood Circulation to Remove Stasis and antiphlogistic actions were advantageous to the inflammation, control and repair course of the PCFP. The article discussed that YNBY might promote the repairing of cementum and alveolar bone of perforated area.
出处
《中国中西医结合杂志》
CAS
CSCD
北大核心
1994年第6期357-359,共3页
Chinese Journal of Integrated Traditional and Western Medicine
关键词
牙周组织
髓室底穿孔
病理学
白药
periodontal tissue, floor of pulp chamber perforation, histopathology, Yunnan Baiyao
