Rees J S, Huggett R, Harrison A
University of Bristol Dental School.
Int J Prosthodont. 1990 May-Jun;3(3):238-40.
Based on clinical experience and empiricism, it was postulated that fraenal notches and midline diastemas lead to fracture of complete dentures. This study used finite element stress analysis to investigate the stress-concentrating effect of a fraenal notch with and without a midline diastema. It was found that a large fraenal notch resulted in high stress levels and that these stresses were augmented more by a narrow median diastema than its wider counterpart.
基于临床经验和经验主义，有人推测系带切迹和中线间隙会导致全口义齿折断。本研究采用有限元应力分析方法，研究有无中线间隙时系带切迹的应力集中效应。结果发现，较大的系带切迹会导致高应力水平，并且与较宽的中线间隙相比，狭窄的中线间隙会使这些应力增加得更多。
