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笔者对制作的数百件全口义齿作了认真的回顾性分析。上下颌牙列缺失的原因不同和缺失的时间长短,决定了上下颌牙槽嵴的丰满度和萎缩程度明显差异,再则是上下唇的松弛情况、长短都给平分颌间距离在具体运用上带来困难,根据笔者多年的临床观察,特对平分颌间距离个体差异的临床处置作如下分析。1 上唇过短或上牙槽嵴较为丰满患者稍作说话及唇部运动,上颌前部牙槽嵴就暴露出来,如对颌间距离进行平分,排出的上颌前牙,则会不开唇便露齿,所以在操作时先要确定上(牙合)堤合适的高度,一般不超过上唇下缘4mm。过低(唇下1～2mm)使排牙困难,过高(大于唇下4mm)则影响外形。形
The author of the production of hundreds of complete dentures made a careful retrospective analysis. The reasons for the absence of maxillary and mandibular dentition and the length of the missing, determines the maxillary and mandibular alveolar crest fullness and degree of atrophy significant difference, then the upper and lower lip relaxation, the length of the bisector to the distance between the specific application Bring difficulties, according to the author for many years of clinical observation, special treatment of individual differences in the distance between the jaws of the clinical treatment for the following analysis. 1 upper lip is too short or upper alveolar ridge is more plentiful Patients speak a little and lip movements, the maxillary anterior alveolar ridge is exposed, such as the jaw distance from the maxillary anterior teeth, it will not open the lip Tooth, so first in the operation to determine the (occlusion) embankment suitable height, generally not more than 4mm lower lip edge. Too low (lip 1 ~ 2mm) to row teeth difficult, too high (greater than the lip 4mm) will affect the appearance. shape