Levesque G Y, Demirjian A
J Dent Res. 1980 Jul;59(7):1123-6. doi: 10.1177/00220345800590070401.
Six examiners evaluated dental formation on 191 radiographs, using an eight-stage system. Discrepancies between these examiners are generally of the order of +/- one stage, in about 20 to 25% of the cases. The authors thus suggest the use of reference radiographs, for the double purpose of ensuring a homogeneous rating by two examiners or more, as well as the assessment of eventual differences between populations.
六位检查人员使用八阶段系统对191张X光片上的牙齿发育情况进行了评估。在大约20%至25%的病例中，这些检查人员之间的差异一般在正负一个阶段左右。因此，作者建议使用参考X光片，以达到两个目的：一是确保两名或更多检查人员给出一致的评级，二是评估不同人群之间可能存在的差异。
