查询词典 periodontitis

It shows in clinic as tooth sensitivity, pulpitis,periodontitis,food impaction ,deformation of basifacial caused of loss of occlusal height, temporomandibular disorder syndrome, etc. The wear property of artificial tooth material will lead a direct effect to restoration result, when it exists in oral environment. It will cause tooth enamel loss too much in a very short period, if the wear property of artificial tooth superior to tooth enamel; but if it is inferior to tooth enamel, serious wear will occur on restoration occlusions, which will lead to loss of bite functions and even decrease of occlusal vertical dimension, disorder of bite functions, etc. Therefore, it is important to artificialtooth material not only it"s biotic compatibility, mechanical function, chemistry property but also it"s wear property.

当口腔中存在修复体时，人工牙材料的磨耗性能也直接影响临床修复的效果，当其磨耗性能强于天然牙釉质门时，将会引起天然牙釉质过度磨耗；当其磨耗性低于天然牙釉质时，又会在较短时期内引起修复体咬合面磨损过度，失去咬合功能，严重者甚至出现咬合垂直距离降低，咬合功能紊乱等症状因此，对于人工牙材料除了考虑生物相容性、机械性能及化学性能外，还应考虑到材料的磨耗性能，而磨耗率的测定一直是评价天然牙及人工牙磨耗性能的优越指标之一。

Especially in the advanced localized periodontitis of molar with narrow furcation entrance diameter if un treated, the prognosis is poor, unless the oral hygieneis optimal in the furcal area.

一般而言，根叉齿槽骨病变患齿，尤其是带有狭窄根叉入口的进行性牙周炎之臼齿，如果根叉区域无法有效的牙菌斑控制或是没有治疗，则预后极差。

Periodontitis is a deeper and more serious inflammation of both the gingivae and tissue that surrounds and supports the teeth.

牙周炎是两国的牙龈和组织更深入和更严重的炎症周围，支持牙齿。

Objectives: To observe functional changes of antioxidants in gingival tissue of elderly patients with periodontitis.

目的 ：观察老年牙周炎患者局部牙龈组织中抗氧化能力的变化。

A case report was presented with a female patient of class II malocclusion, bimaxillary dentoalveolar protrusion with space deficiency. Bilateral lower left second molars were mesially inclined impactions with large caries. The lower left second molar was diagnosed with acute apical periodontitis.

本文提出一双颚齿槽前突合并齿列拥挤之安格氏二级咬合不正之女性患者，其下颚两侧第二大臼齿为近心倾倒之阻生齿合并龋齿，而左下第二大臼齿之龋齿已侵犯到牙髓而有急性根尖牙周炎的情况。

METHODS:Fifty two permanent maxillary first molars,which were diagnosed as pulpitis and periapical periodontitis clini cally,were selected.The pulp chamber floors were examined and detected to locate the mesiolingual canals(MB2) by naked eyes and SOM respectively.

由于其近颊根通常有近中颊和近中舌(MB2 ) 2个根管，而其近中舌根管细小且根管口常较为隐蔽，因此，Weine认为上颌第一恒磨牙根管治疗失败的一个主要原因是治疗中遗漏了MB2根管。

Xin Hua Hospital,Tongzhou District,Beijing101100. Objective To find an easy and effective therapy to cure patients with pulp necrosis or chronic pe-riapical periodontitis.Methods 184patients（age18～60）with184infected permanent teeth were randomly divided into two groups.The experimental group was filled with the VITAPEX paste plus gutta percha.

目的 针对牙髓坏死、慢性根尖周炎病例，探求简便有效的治疗方法方法在临床选择18～60岁的牙髓坏死、慢性根尖周炎病例184例，184颗患牙，随机分两组，第一组采用VITAPEX糊剂加牙胶尖一次法根充治疗完成。

Objective To observe the clinical impact of Tinidazole on the treatment of Root-canal therapy and Periapical Periodontitis.

目的观察替硝唑在治疗感染根管、根尖周炎中的临床效果。

Objective: To further study the mechanism of the bone bone absorption in chronic periapical periodontitis.

目的：为了进一步探讨慢性根尖周炎根周组织损伤、骨吸收的机理。

Methods: 124 teeth of 109 patients with pulpitis and chronic periapical periodontitis requiring root canal therapy were included in this study.

将109例患者124颗患牙(包括牙髓炎、慢性根尖周炎)随机分为2组，每组62颗牙。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。