Weiland F J, Jonke E, Bantleon H P
Department of Orthodontics, University Dental School, Graz, Austria.
Eur J Orthod. 1997 Aug;19(4):355-9. doi: 10.1093/ejo/19.4.355.
A comparison between occlusal deviations in the permanent dentition in the skulls of 94 19th century and 157 present-day Austrian males was made by means of the PAR Index. It was found that the contemporary dentitions showed significantly higher malocclusion scores than the 19th century sample (weighted PAR Index 11.79 and 6.62, respectively). The results show that secular changes in malocclusion have occurred during the last 100 years.
通过PAR指数对94名19世纪奥地利男性颅骨和157名现代奥地利男性颅骨的恒牙列咬合偏差进行了比较。结果发现，当代牙列的错颌畸形得分显著高于19世纪的样本（加权PAR指数分别为11.79和6.62）。结果表明，在过去100年里错颌畸形发生了长期变化。
