Peck S
Department of Orthodontics and Dentofacial Orthopedics, Harvard School of Dental Medicine, Boston, Mass, USA.
Am J Orthod Dentofacial Orthop. 1998 May;113(5):515-7. doi: 10.1016/s0889-5406(98)70262-8.
Little is know about intraosseous migration of nonerupting teeth, a rare natural condition of horizontal tooth movement and impaction. It occurs only in the mandible and involves primarily the second premolar or the canine. When the second premolar is the affected tooth, it always is found distal to its normal position. The origins of the second premolar intraosseous migration phenomenon are obscure and usually no treatment is recommended. Intraosseous migration involving the canine is commonly called transmigration because the affected canine moves mesially across the mandibular symphysis to the opposite side of the mandible. Analysis of 50 published cases of canine transmigration indicated higher occurrence in women and no sidedness preference. In over 80% of the studied cases, the canine remained nonerupted and, of the 24 cases receiving some treatment, all but two underwent extraction of the anomalous canine. The canine transmigration phenomenon appears to show signs of having some genetic determinants.
对于未萌出牙齿的骨内迁移这一罕见的水平向牙齿移动和阻生自然状况，人们了解甚少。它仅发生在下颌骨，主要累及第二前磨牙或尖牙。当第二前磨牙为受累牙齿时，它总是位于其正常位置的远中。第二前磨牙骨内迁移现象的起源尚不清楚，通常不建议进行治疗。涉及尖牙的骨内迁移通常称为移位，因为受累尖牙会向近中穿过下颌联合至下颌骨的另一侧。对50例已发表的尖牙移位病例分析表明，女性发病率较高，且无左右侧偏好。在超过80%的研究病例中，尖牙仍未萌出，在接受某种治疗的24例病例中，除两例外，其余均拔除了异常尖牙。尖牙移位现象似乎显示出有一些遗传决定因素的迹象。
