Brown T, Molnar S
Department of Dentistry, University of Adelaide, South Australia.
Am J Phys Anthropol. 1990 Apr;81(4):545-53. doi: 10.1002/ajpa.1330810410.
Interproximal grooving was recorded in 85 nineteenth century aboriginal skulls from Swanport in South Australia. One or more grooved teeth were noted in 41% of individuals, but the frequency of grooving in males was twice that in females. Distal surface grooving was noted in 93 teeth in contrast to only five instances of mesial grooving. The lesions were similar in appearance to those reported in many other populations--confined primarily to the premolar-molar region, located at the cementoenamel junction, directed horizontally, and usually clean-cut and free of caries. Stripping of animal sinews between the clenched posterior teeth has been recorded on film as a common task activity in traditional aboriginal society. In our opinion, task activity and not toothpicking was the likely cause of the observed interproximal grooving in the aboriginals.
在南澳大利亚斯旺波特出土的85具19世纪原住民头骨上记录到了邻面沟纹。41%的个体有一颗或多颗有沟纹的牙齿，但男性的沟纹出现频率是女性的两倍。有93颗牙齿出现远中面沟纹，而近中沟纹仅出现5例。这些病变的外观与许多其他人群中报告的相似——主要局限于前磨牙-磨牙区域，位于牙骨质釉质交界处，呈水平方向，通常边缘清晰且无龋齿。在电影中记录到，在传统原住民社会，在后牙咬紧时用动物肌腱进行拉扯是一项常见的任务活动。我们认为，任务活动而非剔牙可能是观察到的原住民邻面沟纹的原因。
