The early treatment of unusual sever ectopic eruption of the bilateral maxillary canines in a young Japanese girl: A case report
The early treatment of unusual sever ectopic eruption of the bilateral maxillary canines in a young Japanese girl: A case report
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日本女孩双侧上颌尖牙异常严重异位萌发的早期治疗：一例报告
DOI：
10.1016/s0917-2394(09)70161-2
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发表时间：
2009
影响因子：
0.8
通讯作者：
Y. Taguchi
中科院分区：
文献类型：
--
作者：
S. Hayashi;Y. Taguchi
本报告的目的是描述一个不寻常的严重异位萌出的双侧上颌尖牙在一个年轻的病人，年龄7岁8个月，并讨论早期干预的影响，如提取的前身和开窗术的影响尖牙。患者被转介到作者的诊所咨询关于双侧异位萌出上颌尖牙与异位上颌右第一磨牙。拔除乳牙后3年7个月，患牙完全萌出并排齐咬合。治疗前，曲面断层片上的发现如下，无直接原因，两颗犬齿牙胚位于非常高的位置，两颗犬齿的牙尖与相邻侧切牙的牙根不重叠（第1区）。上颌左尖牙近远中水平阻生（轴向成角：90 °），通过早期干预，如拔除前牙和三个开窗，可以成功地引导萌出。因此，即使在严重的异位病例中，当牙冠顶部位于第1区时，在早期发现和干预的病例中，也可以推迟牵引，直到无法检测到开窗术的效果。一般来说，在替牙期，上颌恒尖牙异位萌出的儿童占1.5%至2.0% 2 -4），这些病例中有75%来自特发性异常方向和/或位置5）。据报道，女性上颌尖牙异位萌出的患病率明显高于男性6）。单侧异位药疹最常见（85%），双侧异位药疹很少。早期诊断对改善上颌尖牙异位萌出至关重要。前牙萌出后拔除前牙是治疗前牙缺失的首选方法。然而，Kurol等人6）认为，如果异位恒牙位于牙槽骨的水平位置，拔除乳牙可能会显示出不太有利的结果
The purpose of this report was to describe an unusual severe ectopic eruption of the bilateral maxillary canines in a young patient aged 7 years and 8 months and to discuss the effects of early intervention such as extraction of the predecessors and fenestration of the affected canines. The patient was referred to the author’s clinic for a consultation regarding bilateral ectopically erupting maxillary canines with an ectopic maxillary right first molar. After improvement of the first molar, the affected canines were fully erupted and aligned in occlusion 3 years and 7 months after the extraction of primary canines. Before treatment, the findings on the orthopantomogram were as follows, there was no direct cause, both canine tooth germs were situated in very high positions, and the cusp tips of both canines were not overlapped with the roots of the adjacent lateral incisors (Sector 1). The maxillary left canine impacted horizontally in a mesio-distal direction (axial angulation: 90 degrees) could be successfully guided to eruption by early intervention such as the extraction of predecessors and three fenestrations. Even in severe ectopic cases, therefore, it is considered that traction may be postponed until no effect of fenestration can be detected in cases of early discovery and intervention when the crown top is situated in Sector 1.In general, ectopic eruption of the maxillary permanent canines is found in 1.5% to 2.0% of children during the mixed dentition period2–4) and, 75% of these cases are derived from an idiopathic abnormal direction and/or position5). The prevalence of the ectopically erupting maxillary canines has been reported to be significantly higher in females than in males6). Unilateral occurrence is the most common (85%), and bilateral ectopic eruption is rare5). An early diagnosis is essential to improving ectopically erupting maxillary canines. It is well known that it is the first choice for treatment of them to extract the predecessor after eruption of anterior teeth. However, Kurol et al. 6) have suggested that extraction of the primary canines might show less favorable results with ectopic permanent canines located in a horizontal position high up in the alveolar
日本儿童和青少年的火山喷发干扰
DOI：
--
发表时间：
2006
期刊：
Pediatric Dental Journal 16(1)
影响因子：
--
作者：
Noda;T.;Takagi M.;Hayashi-Sakai;S.;Taguchi;Y.
通讯作者：
Y.