
爱牙小讲堂-20小牙病,大麻烦
May 15, 2015 - 03:09
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May 15, 2015 - 03:04

May 15, 2015 - 03:45
唇 裂,也就是俗称的“兔唇”,是口腔颌面部常见的先天性畸形,发生率约为1:1000。正常的胎儿,在第五周以后开始由一些胚胎突起逐渐互相融合形成面部,如未能正常发育便可发生畸形。


May 14, 2015 - 04:26


