论文部分内容阅读
一名21岁女性患者的两个上中切牙外伤折断,右中切牙对髓试法无反应,而在中切牙则有反应。X线照片显示右中切牙的牙折累及牙髓,而左中切牙的牙髓正常。治疗:右中切牙麻醉后,安置橡皮障隔湿,以牙胶尖充填完成根管治疗,在左中切牙暴露的牙本质上放置氢氧化钙以保护牙髓。将折断线上约1.5毫米宽的牙釉质面作成斜面。然后作酸处理和涂敷粘合剂。先修复左中匈牙,用一个浸透50%磷酸溶液(含有由重量比为7%的氧化锌作缓冲剂)的小棉球贴敷于接近断面的牙釉质上一分钟。然后用水清洗牙面,用温热的空气吹干牙齿。在酸处理过的牙釉质面上和氢氧化钙上,用小驼毛笔刷一层封闭剂(Nuva-Seal)。
A 21-year-old female patient had two upper incisor traumatic injuries, the right middle incisor failed to respond to the medullary test, and the lower incisor responded. X-rays showed that the tooth of the right central incisor impacted the pulp, whereas the left central incisor had normal pulp. Treatment: Right central incisor anesthesia, placement of rubber barrier wet, root canal treatment with gutta-percha filling, placed in the left dentition exposed dentin to protect the dental pulp. Will be broken line on the enamel surface of about 1.5 mm wide beveled. Then acid treated and coated with adhesive. The first left Hungarian tooth is repaired and a small ball of cotton soaked in a 50% phosphoric acid solution containing zinc oxide (7% by weight as a buffering agent) is applied to the enamel near the cross section for a minute. Then wash the teeth with water, dry the teeth with warm air. On the acid-treated enamel surface and calcium hydroxide, use a small camel brush to apply a layer of sealant (Nuva-Seal).