Saini T S, Kharat D U, Mokeem S
Department of Prosthetic Dental Sciences, King Saud University, College of Dentistry, Riyadh, Kingdom of Saudi Arabia.
Oral Surg Oral Med Oral Pathol. 1990 Oct;70(4):540-4. doi: 10.1016/0030-4220(90)90228-k.
The prevalence of maxillary incisor shoveling was studied radiographically in 990 Saudi patients. According to the radiomorphologic characteristics, a new classification was developed and shovel teeth were categorized. The findings of this study showed 9% shovel-shaped incisors; among those, 4% were central incisors and 5% were lateral incisors. Frequency of dens invaginatus occurrence with the shovel-shaped incisors was also investigated. Eight percent of shovel-shaped incisors showed presence of dens invaginatus. Prevalence was found to be 4% in central shovel-shaped incisors, whereas that in lateral shovel-shaped incisors was 11%.
对990名沙特患者的上颌切牙铲形进行了影像学研究。根据放射形态学特征，制定了一种新的分类方法，并对铲形牙进行了分类。本研究结果显示，9%的切牙为铲形；其中，4%为中切牙，5%为侧切牙。还调查了铲形切牙中牙内陷的发生频率。8%的铲形切牙存在牙内陷。发现中切牙铲形中牙内陷的患病率为4%，而侧切牙铲形中牙内陷的患病率为11%。
