阻生尖牙邻近切牙的根吸收组和无根吸收组尖牙的牙囊大小有无差别。
The extent and location with the root resorption of neighboring incisors were observed in the sequential transaxial views;
曲面体层片对上颌阻生尖牙邻近切牙根吸收诊断的灵敏度是43.8%，特异度是82.4%；
The sensitivity and specificity of diagnosing the incisors root resorption caused by impacted maxillary canines using PTG were 43.8%and 82.4%respectively.
方法选择103名上颌尖牙埋伏阻生患者，分为46名腭侧阻生组和57名唇侧阻生组。
Method 103 patients with impaction of maxillary canine were divided into two groups (buccal and palatal). 46patients were in palatal group and 57patients in buccal group.
目的探讨上颌尖牙阻生的正畸治疗及相关问题。
Objective To discuss the orthodontic therapy and the associated problems of the patients with maxillary impacted canine.
较常见的是尖牙和上颌切牙的埋伏阻生（第三磨牙除外）。
Impacted tooth frequently appears in upper cuspid and upper central incisors(except of the third molar) .
方法根据患者的年龄和发育阶段、上颌尖牙的形态、位置以及萌出间隙等情况，对2 1例上颌尖牙阻生患者采取了不同的矫治方法。
Methods According to age, the stage of the patients, the shape and the position, and the eruption space, twenty-one patients were treated with the different orthodontic methods.
方法根据患者的年龄和发育阶段、上颌尖牙的形态、位置以及萌出间隙等情况，对2 1例上颌尖牙阻生患者采取了不同的矫治方法。
Methods According to age, the stage of the patients, the shape and the position, and the eruption space, twenty-one patients were treated with the different orthodontic methods.
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