Akar Gulcan Coskun, Alpoz Esin, Govsa Figen, Lomcali Gunnur
Department of Prosthodontics, School of Dentistry, Ege University, Izmir, Turkey.
Department of Oral and Maxillofacial Radiology School of Dentistry, Ege University, Izmir, Turkey.
Surg Radiol Anat. 2016 Sep;38(7):817-23. doi: 10.1007/s00276-016-1624-y. Epub 2016 Jan 18.
The human stylohyoid chain calcification patterns (SCP) present considerable anatomic variability. This study was performed to investigate the calcification on SCP in the dentate and total edentulous population and its relation to mandibular protrusive movement.
The study analyzed 1.234 SCP in digital panoramic radiographs of 617 subjects. The SCP were classified according to Mac Donald-Jankowski. The amount of mandibular protrusion movement limitation was evaluated for each subject. The data were analyzed using one-way Anova, Kruskall Wallis, Mann-Whitney U, and Chi-squared tests with significance set at p = 0.05.
Among the 617 subjects evaluated there was symmetry of the SCP between the left and right sides in 87.3 % of the cases. In the study population 501 subjects were dentate (Class I, Class II, Class III molar relationship) and 116 subjects were total edentulous. There were significant differences among dentate and total edentulous patients for the distribution of SCP (p < 0.05). Elongated group was more prevalent in total edentulous subjects while in subjects with Class I occlusion normal SCP was observed. Although mandibular protrusive movement range was within normal limits for all the groups, calcified and elongated groups have numerically less protrusive movement compared to normal groups (p < 0.05).
Among dentate and total edentulous subjects, similarity in SCP for right and left side was observed. The elongation of SCP was more common in the total edentulous group. Further studies conducted on larger populations are necessary to establish the effect of the state of dentition on the SCP.
人类茎突舌骨链钙化模式（SCP）存在相当大的解剖学变异性。本研究旨在调查有牙列和无牙列人群中SCP的钙化情况及其与下颌前伸运动的关系。
本研究分析了617名受试者数字全景X线片中的1234条SCP。SCP根据Mac Donald-Jankowski进行分类。评估了每个受试者下颌前伸运动受限的程度。使用单因素方差分析、克鲁斯卡尔-沃利斯检验、曼-惠特尼U检验和卡方检验对数据进行分析，显著性水平设定为p = 0.05。
在评估的617名受试者中，87.3%的病例左右两侧SCP对称。在研究人群中，501名受试者有牙列（I类、II类、III类磨牙关系），116名受试者无牙列。有牙列和无牙列患者在SCP分布上存在显著差异（p < 0.05）。细长型在无牙列受试者中更常见，而在I类咬合的受试者中观察到正常的SCP。尽管所有组的下颌前伸运动范围均在正常范围内，但钙化组和细长型组在数值上的前伸运动比正常组少（p < 0.05）。
在有牙列和无牙列受试者中，观察到左右两侧SCP的相似性。SCP的伸长在无牙列组中更常见。有必要对更多人群进行进一步研究，以确定牙列状态对SCP的影响。
