Kurosu K, Watanabe H, Tsuchiya T, Kawai Y
Aichi Gakuin Dent Sci. 1989;2:47-56.
This is a study of supernumerary teeth in the maxillary anterior area in children. More than 60,000 child patients were examined. The 842 supernumerary teeth in the maxillary anterior area, found in a total of 682 children, were analyzed clinically. The incidence of supernumerary teeth was 1.12%. The male-female ratio was 3 to 1. Supernumerary teeth found were single and multiple types, with a ratio of 3 to 1. The eruption direction was normal (51.2%), inverted (36.2%) or horizontal (7.6%). Approximately 65% were found impacted in the maxilla.
这是一项关于儿童上颌前部多生牙的研究。检查了60000多名儿童患者。对总共682名儿童上颌前部发现的842颗多生牙进行了临床分析。多生牙的发生率为1.12%。男女比例为3比1。发现的多生牙有单颗和多颗类型，比例为3比1。萌出方向正常的占51.2%，倒置的占36.2%，水平的占7.6%。约65%的多生牙在上颌中发现为阻生。
