在临床工作中，我们经常可以见到一些无牙颌患者由于旧义齿不合适，要求重新制作义齿。在口腔检查时，发现有些患者因牙槽骨吸收不均匀，导致某些区域骨吸收严重而形成凹陷，或出现活动性纤维性松软牙槽嵴。这种情况多见于前牙区，为此作者对１２例这类患者作了如下的调查... In clinical work, we often can see some edentulous patients because of the old dentures inappropriate, requiring the re-making dentures. In the oral examination, some patients found uneven absorption of alveolar bone, leading to serious bone resorption in some areas and the formation of depression, or active fibrous soft alveolar ridges. This situation more common in the anterior tooth area, for which the author of 12 cases of these patients made the following survey ...