Gotoh T, Kawahara K, Imai K, Kishi K, Fujiki Y
Oral Surg Oral Med Oral Pathol. 1979 Jul;48(1):88-91. doi: 10.1016/0030-4220(79)90243-3.
After a determination of the frequency of dens invaginatus by means of radiographic observations, various problems of its identification are discussed. The 188 teeth showing a distinct loop-shaped invagination apically on the radiograph were studied for the presence or absence of caries and periapical lesions. It was demonstrated that periapical lesions caused by caries are mostly due to interproximal caries and that the frequency of periapical lesions caused by caries in the dens invaginatus area was less than previously reported. Comments are made on the dens invaginatus cases having periapical lesions without caries and the parameters for future studies.
通过影像学观察确定牙中牙的发生率后，讨论了其识别的各种问题。对188颗在X线片上根尖部显示明显环形内陷的牙齿进行了龋病和根尖周病变的检查。结果表明，龋病引起的根尖周病变主要是邻面龋所致，牙中牙区域龋病引起的根尖周病变发生率低于先前报道。对无龋病但有根尖周病变的牙中牙病例及未来研究参数进行了讨论。
