Helm S, Prydsö U
Scand J Dent Res. 1979 Apr;87(2):91-7. doi: 10.1111/j.1600-0722.1979.tb00659.x.
A comparison was made of frequencies of anomalies of the dentition, occlusion, and space conditions for the permanent dentition in the skeletal remains of 278 medieval Danes and in 1258 contemporary Danes. The congenital anomalies of the dentition were equally common in the samples. Extreme maxillary overjet and distal molar occlusion, deep bite, and crowding were considerably less frequent in the Middle Ages. The frequencies of mesial molar occlusion and crossbite, but not that of midline displacement, were higher in the medieval sample, especially in the older subjects. It is suggested that the observed differences in malocclusion prevalence were related to exogenous factors, primarily the pronounced dental attrition.
对278具中世纪丹麦人的骨骼遗骸以及1258名当代丹麦人的恒牙列的牙列、咬合和间隙状况异常频率进行了比较。牙列的先天性异常在样本中同样常见。极度上颌前突、远中磨牙咬合、深覆合和牙列拥挤在中世纪的发生率要低得多。中世纪样本中近中磨牙咬合和反合的频率较高，但中线移位的频率并非如此，尤其是在年龄较大的受试者中。研究表明，观察到的错颌患病率差异与外部因素有关，主要是明显的牙齿磨损。
