A case of odontoma that caused delayed eruption of mandibular first permanent molar
A case of odontoma that caused delayed eruption of mandibular first permanent molar
复制标题
牙瘤致下颌第一恒磨牙迟萌1例
作者：
Y. Kaihara;N. Sasaki;H. Morimoto;N. Nagasaka
我们曾有一个发生在左下颌磨牙区的牙瘤，造成左下颌第一恒磨牙延迟萌出的病例。对手术切除的肿瘤组织进行临床病理检查，包括外观、邻牙情况、放射学表现、组织病理学表现、术后病程等。切除的聚集体结果：1）切除的小肿块总重4.835 g。2）X线片显示不透射线图像，与小肿块的集合体相对应; 3）组织学检查显示牙齿硬组织肿块，排列不规则。肿块主要由牙本质组成，呈透明管状结构。牙本质被釉质、骨水泥和少量牙髓组织散在包围，诊断为复杂性牙瘤。在我们的病例中，没有观察到复发，预后良好。下颌左侧磨牙区隆起消失，第一恒磨牙萌出，牙根形成。
We experienced a case of odontoma which appeared in the molarregion of left mandible and caused delayed eruption of the mandibular left firstpermanent molar. The tumor aggregate surgically excised was examinedclinicopathologically with respect to the appearance, conditions of the adjacentteeth, radiological findings, histopathological findings, postoperative courseand others. Findings of excised aggregate:1) The small masses excised weighed a total of 4.835 g. Each small mass wasyellowish brown, with an uneven surface covered by a membrane.2) A radiograph showed radiopaque images corresponding to the aggregate ofthe small masses.3) Histopathological examinations revealed a mass of dental hard tissue in anirregular arrangement. The mass was composed mainly of dentin with aclear tubular structure. The dentin was surrounded sporadically by enamel,cement and a small amount of pulp tissue, resulting in a diagnosis ofcomplex odontoma.In our case, no relapse has been observed, and the prognosis is excellent. Thebulge in the molar region in left side of the·mandible has disappeared, and theeruption and root formation of the first permanent molar are in progress.