Ohata Hitoshi, Hayashi Kamichika, Iwamoto Masashi, Muramatsu Kyotaro, Watanabe Akira, Narita Masato, Suga Kenichiro, Takano Nobuo, Shibahara Takahiko
Department of Oral and Maxillofacial Surgery, Tokyo Dental College.
Bull Tokyo Dent Coll. 2013;54(4):259-64. doi: 10.2209/tdcpublication.54.259.
The Frequency with which impacted supernumerary teeth are encountered in a clinical setting is relatively high, with the majority of such cases occurrig in the median maxillary region, and very few in the molar region. In the molar region, mandibular distomolars (fourth molars) are very rare. Although a small number of case reports have described impacted supernumerary distomolars, very few have compared third molars and distomolars. Herein, the authors report two cases involving mandibular distomolars and one case a maxillary distomolar. In each of these cases, the third molar and distomolar were extracted and a macroscopic morphological analysis conducted. The results were then compared with those of the latest available literature.
在临床环境中遇到阻生多生牙的频率相对较高，大多数此类病例发生在上颌正中区域，而在磨牙区则很少见。在磨牙区，下颌远中磨牙（第四磨牙）非常罕见。虽然有少数病例报告描述了阻生多生远中磨牙，但很少有将第三磨牙和远中磨牙进行比较的。在此，作者报告了两例涉及下颌远中磨牙的病例和一例上颌远中磨牙的病例。在每例病例中，均拔除了第三磨牙和远中磨牙并进行了宏观形态学分析。然后将结果与最新可得文献的结果进行比较。
