frenal

1.the frenal notch is the weak area of the denture in which the stress concentration may result in fracture of MCD.

唇系带切迹处为义齿结构上的薄弱区，其应力集中构成了义齿折裂的潜。

2.Methods: 3-D FEM was employed to investigate the stress states caused by cusp inclination on the node 338 of pre-palate and 350 of the frenal notch of the base of MCD.

方法:应用三维有限元应力分析法究牙尖斜度对上颌全口义齿基托节点338及唇系带切迹区节点350应力状况的影响。