Department of Oral Surgery, Medical University of Vienna, Austria.
Oral Dis. 2011 Jan;17(1):33-44. doi: 10.1111/j.1601-0825.2010.01699.x.
To study the natural aetiopathology of jaw atrophy after tooth loss, unaltered by prosthetic procedures, an historical population without modern dental treatment was examined.
Based on the hypothesis that there are predictable changes in shape during jaw-atrophy, frequency and degree of atrophy as well as clinical aspects of bone quality and resorption were determined in the skeletal remains of 263 individuals. The potential association between age and frequency/severity of atrophy was analysed.
Atrophy in at least one jaw segment was present in 45.2% of the analysed jaw specimens. The residual ridge underwent a series of changes in shape and height following the pattern of resorption described for modern populations. The severity of these alterations was associated with the age of the individual and the region within the jaw. Atrophy was frequently related to structural degradation of the covering cortical layer.
These findings prove that atrophy of the jaw evidently does occur, displaying similar patterns of resorption in a population without modern prosthetics, where the negative effect of ill-fitting dentures is excluded. The basic information about alterations of shape and the cortical layer covering the residual crest might help to provide a deeper insight into aetiopathological mechanisms of this common oral disease.
研究未受修复程序影响的失牙后颌骨萎缩的自然病因病理学，为此我们研究了一个没有现代牙科治疗的历史人群。
基于颌骨萎缩过程中存在可预测性变化的假设，我们在 263 名个体的骨骼遗骸中确定了萎缩的频率、程度以及骨质量和吸收的临床方面。分析了年龄与萎缩频率/严重程度之间的潜在关联。
在分析的颌骨标本中，45.2%存在至少一个颌骨段的萎缩。剩余牙槽嵴的形状和高度发生了一系列变化，其变化模式与现代人群描述的吸收模式一致。这些改变的严重程度与个体的年龄和颌骨区域有关。萎缩通常与覆盖皮质层的结构退化有关。
这些发现证明，颌骨萎缩显然会发生，在没有现代修复体的人群中，显示出与吸收相似的模式，在这种人群中，不合适的义齿的负面影响被排除。关于形状改变和覆盖残余嵴的皮质层的基本信息可能有助于深入了解这种常见口腔疾病的病因病理学机制。
