Conklin W W
Oral Surg Oral Med Oral Pathol. 1975 Jun;39(6):949-52. doi: 10.1016/0030-4220(75)90116-4.
Two cases of bilateral double dens invaginatus in the maxillary incisor region have been reported. One of the patients (Case 1), a 12-year-old boy, had double invaginations in both of the erupted teeth in the maxillary lateral incisor region. The other patient (Case 2), a boy 8 years of age, had double invaginations in each of the two partially developed supernumerary teeth that were impacted in the palate in the maxillary central incisor region. Double bilateral dens invaginatus would appear to be a most unusual occurrence.
已报告两例上颌切牙区双侧双牙内陷病例。其中一名患者（病例1）是一名12岁男孩，上颌侧切牙区已萌出的两颗牙齿均有双内陷。另一名患者（病例2）是一名8岁男孩，上颌中切牙区腭部两颗部分发育的多生牙均有双内陷。双侧双牙内陷似乎是一种非常罕见的情况。
