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首页> 外文期刊>Pain research & management: the journal of the Canadian Pain Society = journal de la socie?te? canadienne pour le traitement de la douleur >Relationship between Cervical Spine and Skeletal Class II in Subjects with and without Temporomandibular Disorders
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Relationship between Cervical Spine and Skeletal Class II in Subjects with and without Temporomandibular Disorders

机译：颈椎与颞下颌障碍宫颈脊柱和骨骼级的关系

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Aim. To assess changes in the craniocervical structure and in hyoid bone position in skeletal Class II subjects with and without temporomandibular disorders (TMD). Materials and Methods. The cephalometric analysis of 59 subjects with skeletal Class II was evaluated and compared. The measurements considered were ANB as a parameter of Class II and C0-C1 distance, C1-C2 distance, craniocervical angle, and hyoid bone position for the cervical spine analysis. Patients were divided into patients with TMD (group A) and patients without TMD (group B). TMD were evaluated with Diagnostic Criteria for TMD (DC/TMD). Descriptive statistics and Pearson’s and Spearman’s correlation analysis, with p value <0,005, were performed. Results. C0-C1 and C1-C2 distance values and hyoid bone position resulted within the normal range in the majority of patients examined. Craniocervical angle was altered in 33 patients. The reduction of this angle with the increase of the ANB value resulted to be statistically significant in group A, according to Pearson’s correlation index. No other data were statistically significant. Conclusions. The significant relationship between skeletal Class II and cervical spine cannot be highlighted. The alteration of craniocervical angle seems to be mildly present, with backward counterclockwise rotation of the head upon the neck in the sample (groups A and B). The presence of TMD as a key factor of changes in neck posture could explain the different result between the two groups about the relationship between ANB and craniocervical angle. This result should be further analyzed in order to better understand if cervical spine changes could be related to mandibular postural ones in the craniocervical space or to temporomandibular joint retropositioning, more recognizable in Class II with TMD, which could determine functional changes in other structures of this unit; neck posture could be the result of a compensatory/antalgic mechanism in response to TMD.
机译：目的。评估颅脑结构的变化以及骨骼级患者的骨髓骨骼骨骼位置，患有颞下颌疾病（TMD）。材料和方法。评价和比较骨骼级II的59个受试者的头颅分析。将考虑的测量作为ANB作为宫颈脊柱分析的II类和CO-C1距离，C1-C2距离，颅脑间角度和颅骨骨位置。患者分为患有TMD（A组）和没有TMD的患者的患者（B组）。用TMD（DC / TMD）的诊断标准评估TMD。进行描述性统计和Pearson和Spearman的相关性分析，具有P值<0,005。结果。 C0-C1和C1-C2距离值和杂骨位置导致大多数患者检查的正常范围内。 33例患者中颅脑角发生变化。根据Pearson的相关指数，随着ANB值的增加，在A组中的增加导致该角度的减小导致统计学上显着。没有其他数据具有统计学意义。结论。骨骼类II和颈椎之间的显着关系不能突出显示。颅脑角度的改变似乎温和地存在，头部在样品（A和B组）中的颈部后向逆时针旋转。 TMD作为颈部姿势变化的关键因素可以解释两组关于ANB和颅脑角度之间的关系的不同结果。应进一步分析该结果以更好地了解宫颈脊柱的变化可能与颅脑空间中的下颌姿势有关，或者颞下颌关节亲新定位，在II类中，TMD可以更识别，这可以确定其他结构的功能变化单元;颈部姿势可能是响应TMD的补偿/抗钙化机制的结果。

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