尖牙

The control group was filled with zinc oxide eugenol paste plus gutta percha.

第二组采用氧化锌丁香油糊剂加牙胶尖一次法根充治疗完成。

METHODS: The trial group was treated using AH plusTM sealer, and the control group using Zinc Oxide engenol. The gutta percha point was used to fill the canal.

观察组以AH plus根管糊剂为根管封闭剂，对照组使用氧化锌丁香油糊剂为封闭剂，分别加牙胶尖进行根管充填。

After preparation and drying of the root canal, Vitapex paste was injected to fill the root canal, and gutta percha point was densely filled by lateral compaction technique.

其中实验组在根管预备、干燥后，即使用注射型Vitapex糊剂充满根管，同时采用侧方加压法紧密充填牙胶尖，摄片确定根管适填后，行锌水门汀垫底永久性充填。

Methods 159 cases (180 teeths) in patients with chronic periapical periodotitis were divided into 3 groups randomly,60 in each.

方法对 15 9例 180颗慢性根尖周炎患者，随机分为 3组(每组 6 0颗患牙)。

Root canal therapy is a fundamental method of treating pulpal and periapical diseases nowadays.

根管治疗是现今牙髓病和根尖周病的基本治疗方法。

Root canal therapy is the most fundamental and efficient way to cure endodontics and periapical diseases.

根管治疗术(root canal therapy， RCT)是治疗牙髓病和根尖周病的最基本和最有效的方法。

After studying this chapter, the reader should have clear understanding of the role of microbial infection in pulp and periapical disease, and the need for this knowledge to translate into action at each stage of clinical root canal treatment.

通过学习本章，应该对细菌感染在牙髓病及根尖周疾病中的作用有清晰的认识，并以此指导临床根管治疗的每一步操作。

Etiology and prevention of caries;Etiology and prevention of pulpal and periapical diseases; Oral molecular biology and tissue engineering

龋病病因与防治；牙髓病、根尖周病的病因与防治、口腔分子生物学和组织工程学

The immunohistochemical location of noncollagenous protein, bone sialoprotein , osteopontin and osteocalcin at different stages following periradicular surgery was undertaken. The crystals formation on surfaces of MTA was evaluated when treated in different conditions without cells in vitro and in vivo. MTA was used to manage clinical problems, including perforations in roots or furcations, and pulpless permanent teeth with incomplete root formation. The study included the following three parts

本研究试图通过体内外研究探讨MTA表面牙骨质形成的机理，动物体内动态观察根尖周组织在用MTA倒充填后的组织反应和细胞外基质非胶原蛋白的表达，体外观察MTA在不同的环境下表面的形态及成分变化，和在体内环境下材料表面磷灰石层的形成，同时结合临床病例观察其临床治疗效果。

When non- surgery retreatment failed, endodontic surgery is needed to resaved the tooth.

根尖手术是对非手术治疗无法治愈患牙的保存治疗手段。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失