多生牙多见于上颌恒中切牙之间或其腭侧,形状多为圆锥或圆柱形。笔者近日收治一例下颌切牙区两个多生牙,其形状极似正常牙,难于辩认,现报告如下:孙某,女,10岁。下前牙严重拥挤来诊。检查见下切牙区有6个切牙,大小形态均正常。全颌片示其余未萌出牙胚数目,位置均正常。下颌切牙 More common in the maxillary permanent teeth between the maxillary central incisors or palatal, the shape of mostly conical or cylindrical. Recently, I treated a case of mandibular incisors two more teeth, its shape resembles a normal tooth, difficult to identify, are as follows: Sun, female, 10 years old. Serious crowded under the anterior teeth clinic. Check below the incisor area has 6 incisors, size and shape were normal. All the jaws showed the number of other eruptions that did not erupt, the positions were normal. Mandibular incisor