Eliasson S, Lavstedt S, Ljungheimer C
Swed Dent J. 1984;8(5):231-6.
Altogether 155 crowned teeth--incisors, canines, premolars and molars in both jaws--have been studied by means of radiographs regarding tooth length before and after crown therapy. The results show that the correlation in tooth length is good. The mean differences, however, vary between -0.52 mm for the upper molars and 0.44 mm for the upper incisors. The best correlation in tooth length was found for the upper premolars and the lower incisors.
通过X光片对上下颌共155颗带冠牙齿（包括切牙、尖牙、前磨牙和磨牙）进行了研究，观察了冠修复治疗前后的牙齿长度。结果表明，牙齿长度的相关性良好。然而，平均差异有所不同，上颌磨牙为-0.52毫米，上颌切牙为0.44毫米。上颌前磨牙和下颌切牙的牙齿长度相关性最佳。
