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通过测量１０名上下无牙颌患者（双颌组）和１０名上颌无牙颌患者（单颌组）的齿槽弓和中立区堤弓的宽度，以及堤平面与堤长轴的夹角，深入研究中立区与齿槽嵴顶的关系。结果发现，单颌组尖牙及前磨牙区齿槽弓明显窄于双颌组；单颌组中立区较双颌组接近齿槽嵴顶；中立区位置与齿槽嵴顶在尖牙区差异较大，在磨牙区差异较小，在前磨牙区基本一致。该结果可为双颌和单颌总义齿排牙提供有益的借鉴。
By measuring the width of the alveolar arch of the alveolar arch and the neutral zone of 10 maxillary and maxillary edentulous patients (bimaxillary group) and 10 maxillary edentulous patients (mandibular group), and the width of the embankment plane and the long axis of the embankment Angle, in-depth study of the relationship between neutral zone and alveolar crest. The results showed that the maxillary alveolar arch was significantly narrower than that of the bimaxillary group in the maxillary canines and premolar teeth. The neutral zone of the maxilla group was closer to the crest of the alveolar ridge than the bimaxillary group. The difference between the neutral zone and the alveolar ridge was significant Larger, smaller differences in the molar area, premolar area is basically the same. The results provide a useful reference for the bimaxillary and maxillary total denture teething.