摘要
目的研究2种髓室内漂白法对狗牙颈部牙周组织的影响。方法建立内漂白的实验动物模型,制备病理切片,光镜观察狗牙颈部牙周组织的组织学改变。结果髓室内漂白1年后,热漂白组镜下表现为(1)牙骨质或牙本质吸收;(2)骨性粘连;(3)吸收区大量炎细胞浸润。诊间漂白组镜下表现为(1)牙槽骨局限性吸收;(2)牙骨质陷窝状吸收。结论对含30%过氧化氢的漂白剂行髓室内漂白,无论加热与否。
Objective To study the effects of two intracoronal bleaching techniques on dogs cervical periodontium.Methods The experimental animal modles of intracoronal bleaching were established and pathological slides were made.The histological changes of dogs periodontium were examined by means of light micro scope. Results A year following intracoronal bleaching,the group received thermocatalytic bleaching showed:①resorption of cementum or dentine;②ankylosis,③infiltration of substantial inflamatory cells into resorption areas.The group received walking bleaching showed:①localized resorption of alveolar bone;②lacuna shaped resorption of cementum. Conclusions Whether heated or not,intracoronal bleaching with bleaching agent including 30% hydrogen peroxide may innitiate external cervical resorption of dogsteeth.
出处
《上海口腔医学》
CAS
CSCD
1998年第3期136-139,共4页
Shanghai Journal of Stomatology
关键词
髓室内漂白
过氧化氢
牙颈部外吸收
intracoronal bleaching hydrogen peroxide external cervical resorption