Objective:To evaluate the contribution of radiogram in diagnosis of primary vertical root facture in mandibular first molar.
目的：评价直接数字化影像技术在下颌第一磨牙牙根纵裂诊断中的作用。
2
From among the many things we were offered as a present, it was difficult to make up our minds which to have, but in the end we settled for a radiogram.
从提供我们作为礼物的许多东西中，我们很难下决心接受哪种，但我们终于决定接受收音电唱两伤脑用机。
3
Results: 95 cases of major bronchopathy were proved to be correctly diagnosed by good tomography or high kilovoltage radiogram, the diagnostic accordance rate being 95%(95/100).