查询词典 teeth root

The teeth are acrodont that have no dental root.

牙齿外形呈三角形，为端生牙，无牙根？

The hypoplasia or aplasia of root cementum was thought to be the prime etiological factor in the early loss of primary teeth.

认为牙根牙骨质形成不全或发育不良是该病患儿乳牙过早脱落的根本原因。

Objective To discuss the clinical effects and feasibility of repairing old root canal perforation of front teeth using DMG calcium hydroxide.

目的 探讨DMG光固化氢氧化钙修补前牙陈旧性根管穿孔的临床效果及可行性。

Objective To observe the clinical effect of root canal nail combined with light-cured resin on repairing residual crown and residual root of buccal teeth.

目的 观察根管钉加光固化树脂修复后牙残冠残根的临床疗效。

Methods After treating 147 teeth which diagnosed as aschronic apicitis were suitable for root canal therapy,divided at random into three groups:0.5% Anerdian treatment group,FC group and dry cotton spill to seal the root canal of them.

对147颗慢性根尖炎的患牙，做常规根管处理后，随机选用0.5%安尔碘棉捻或FC棉捻消毒根管，同时与封干棉捻相对照比较。

Methods After treating 147 teeth which diagnosed as aschronic apicitis were suitable for root canal therapy,divided at random into three groups:0.5% Anerdian treatment group,FC group and dry cotton spill to seal the root canal of them.

结果 安尔碘作为根管消毒药物治疗根尖周疾病效果与FC相比差异无显著性，而FC对机体组织有一定刺激性和细胞毒性，且部分患者会过敏。

Methods After treating 147 teeth which diagnosed as aschronic apicitis were suitable for root canal therapy,divided at random into three groups:0.5% Anerdian treatment group,FC group and dry cotton spill to seal the root canal of them.

目的 研究安尔碘作根管消毒药物，观察其治疗效果方法对147颗慢性根尖炎的患牙，做常规根管处理后，随机选用0.5%安尔碘棉捻或FC棉捻消毒根管，同时与封干棉捻相对照比较。

Methods 14 teeth with iatrogenic root canal perforation were selected. The root canals were shaped and cleaned, and then obturated with gutta- percha after MTA was used to repair the perforation in the condition with any blood and moisture.

选取医源性因素造成的根管侧壁穿孔患牙14颗，彻底清理根管并预备根管，在止血隔湿的条件下以MTA 即刻修补根管侧壁穿孔。

The gum atrophies to still cause the tooth dew outside the root, the surface of tooth root doesn't have tooth enamel quality, not only be easily worn away while brushing teeth once there being no the protection of guming, in the meantime to cold, hot and sour incitement very sensitive, the mouth cavity medical science is called "tooth essence allergy", people often mistaken for this kind of phenomenon to peep out tooth nerve to cause ache, and this is incorrect.

牙龈萎缩还导致牙根外露，牙根的表面没有牙釉质，一旦没有了牙龈的保护，不仅容易在刷牙时受到磨损，同时对冷、热、酸的刺激非常敏感，口腔医学称为&牙本质过敏&，人们常把这种现象误认为是露出牙神经导致疼痛，这是不对的。

PURPOSE: To investigate the root and root canal anatomical features of maxillary first premolars in 422 teeth.

目的：了解上颌第一前磨牙的牙根和根管形态，为临床治疗提供解剖学依据。

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。