RELATIONSHIP BETWEEN CRANIOFACIAL AND CONDYLE PATH ASYMMETRY IN UNILATERAL CROSS-BITE PATIENTS
RELATIONSHIP BETWEEN CRANIOFACIAL AND CONDYLE PATH ASYMMETRY IN UNILATERAL CROSS-BITE PATIENTS
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DOI：
10.1093/ejo/12.4.408
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发表时间：
1990-11-01
影响因子：
2.6
通讯作者：
LAHTELA, P
中科院分区：
文献类型：
--
作者：
PIRTTINIEMI, P;KANTOMAA, T;LAHTELA, P
这项工作的目的是检查的程度和方向的不对称的髁状突路径，其与面部和牙齿中线不对称的治疗和未治疗的单侧反牙合患者。研究对象为22例患者，其中女性16例，男性6例，年龄9 ~ 50岁。9名患者有接受过治疗的单侧反咬合病史，该组的平均年龄为11.1岁。这些儿童在5-8岁时接受了可移动或固定的扩张器治疗。13名患者有未经治疗的单侧反牙合，他们的平均年龄为23.4岁。临床检查由两名骨科医生进行，并在头颅定位器中拍摄标准PA X线片。髁状突的路径记录从一个facebow固定刚性的下颌前牙，弓的位置首先记录的牙齿在最大intercuspation，然后在突出与中线不变的反转。髁状突路径被发现是不对称的治疗和未治疗的外侧反组和更陡峭的诊断或治疗的反。不对称的程度被认为是在未经处理的治疗组的两倍。描述下颌骨位置的面部不对称参数与髁突路径不对称性的相关性最强。结果强调了早期治疗侧反牙合的重要性。
The aim of this work was to examine the degree and direction of asymmetry in the condyle path, and its associations with facial and dental midline asymmetry in patients with treated and untreated unilateral cross-bite. The subjects were 22 patients, 16 female and 6 male, aged from 9 to 50 years. Nine patients had a history of treated unilateral cross-bite, the mean age of this group being 11.1 years. The children had been treated with removable or fixed expansion appliances at an age of 5-8 years. Thirteen patients had untreated unilateral cross-bite, their mean age being 23.4 years. The clinical examinations were performed by two orthodontists and standard PA roentgenograms were taken in a cephalostat. The condyle path was recorded from the inversion of a facebow fixed rigidly on the anterior mandibular teeth, the positions of the bow being first recorded with the teeth in maximal intercuspation and then in protrusion with midline unchanged. The condyle path was found to be asymmetric in both the treated and untreated lateral cross-bite groups and to be steeper on the side of the diagnosed or treated cross-bite. The degree of asymmetry was found to be twice as great in the untreated as in the treated group. The facial asymmetry parameters describing the position of the mandible showed the strongest correlation with condyle path asymmetry. The results stress the importance of early treatment of lateral cross-bites.