Yilmaz Selmi, Adisen Mehmet Zahit, Misirlioglu Melda, Yorubulut Serap
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kx0131;rx0131;kkale University, Kx0131;rx0131;kkale, Turkey.
Med Princ Pract. 2016;25(2):169-75. doi: 10.1159/000442416. Epub 2015 Nov 13.
The purpose of this study was to assess the pattern of third molar impaction and associated symptoms in a Central Anatolian Turkish population.
A total of 2,133 impacted third molar teeth of 705 panoramic radiographs were reviewed. The positions of impacted third molar teeth on the panoramic radiographs were documented according to the classifications of Pell and Gregory and of Winter. The presence of related symptoms including pain, pericoronitis, lymphadenopathy and trismus was noted for every patient. Distributions of obtained values were compared using the Pearson χ2 test. Nonparametric values were analyzed using the Mann-Whitney U test and Kruskal-Wallis test.
The mean age of the subjects was 30.58 ± 11.98 years (range: 19-73); in a review of the 2,133 impacted third molar teeth, the most common angulation of impaction in both maxillaries was vertical (1,177; 55%). Level B impaction was the most common in the maxilla (425/1,037; 39%), while level C impaction was the most common in the mandible (635/1,096; 61%). Pain (272/705; 39%) and pericoronitis (188/705; 27%) were found to be the most common complications of impaction. Among 705 patients (335 males, 370 females), pericoronitis was more prevalent in males (101; 30%) and usually related to lower third molars (236; 22%). The retromolar space was significantly smaller in females (p < 0.05). Moreover, there was a significant difference in retromolar space for the area of jaw (maxillary: 11.3 mm; mandibular: 14.2 mm) and impaction level (A: 14.7 mm; B: 11.1 mm; C: 10.3 mm; p < 0.05).
The pattern of third molar impaction in a Central Anatolian Turkish population was characterized by a high prevalence rate of level C impaction with vertical position. Pain and pericoronitis were the most common symptoms usually associated with level A impaction and vertical position.
本研究旨在评估安纳托利亚中部土耳其人群中第三磨牙阻生的模式及相关症状。
回顾了705张全景X线片中总共2133颗阻生第三磨牙。根据佩尔和格雷戈里以及温特的分类方法，记录全景X线片中阻生第三磨牙的位置。记录每位患者是否存在包括疼痛、冠周炎、淋巴结病和牙关紧闭等相关症状。使用Pearson卡方检验比较所得值的分布。使用曼-惠特尼U检验和克鲁斯卡尔-沃利斯检验分析非参数值。
受试者的平均年龄为30.58±11.98岁（范围：19 - 73岁）；在对2133颗阻生第三磨牙的回顾中，上颌中最常见的阻生角度为垂直位（1177颗；55%）。B级阻生在上颌中最常见（425/1037；39%），而C级阻生在下颌中最常见（635/1096；61%）。疼痛（272/705；39%）和冠周炎（188/705；27%）被发现是阻生最常见的并发症。在705名患者（335名男性，370名女性）中，冠周炎在男性中更常见（101例；30%），且通常与下颌第三磨牙有关（236例；22%）。女性的磨牙后间隙明显更小（p < 0.05）。此外，颌骨区域（上颌：11.3mm；下颌：14.2mm）和阻生水平（A：14.7mm；B：11.1mm；C：10.3mm；p < 0.05）的磨牙后间隙存在显著差异。
安纳托利亚中部土耳其人群中第三磨牙阻生的模式特点是C级阻生且垂直位的发生率较高。疼痛和冠周炎是通常与A级阻生和垂直位相关的最常见症状。
