Conklin W W
Oral Surg Oral Med Oral Pathol. 1978 Jun;45(6):905-8. doi: 10.1016/s0030-4220(78)80014-0.
A case of bilateral dens invaginatus in the mandibular incisor regions has been reported. Radiographs demonstrated invaginations in both of the incisors in the mandibular incisor region and also demonstrated a periapical radiolucency. Clinical examination revealed two anomalous incisors and apparently there was congenital absence of two mandibular incisors. Dens invaginatus in the mandibular incisors would appear to be a most unusual occurrence.
已报告一例下颌切牙区双侧牙内陷病例。X线片显示下颌切牙区两颗切牙均有牙内陷，且根尖周有透射区。临床检查发现两颗异常切牙，且明显存在两颗下颌切牙先天性缺失。下颌切牙出现牙内陷似乎极为罕见。
