地包天怎样辨别是骨性还是牙性

2025年04月06日 14:45
有3个网友回答
网友(1):

要拍个头影测量侧位片明确是骨性还是牙性错颌畸形,牙性要正畸治疗,骨性要手术治疗

网友(2):

  首先、看颌面形态是否异常,牙性地包天主要是由于牙齿萌出过程中受到障碍而形成的单纯反颌情况,颌骨颜面都基本正常,而骨性地包天主要表现为下颌发育过度,上颌发育不足,对颌面美观的影响很大。

  其次、看下颌是否能退至切对切,有的功能性的地包天也会存在下颌前突的情况,但只是下颌的功能性前移,下颌骨大小形态都是基本正常的,而且下颌可以退至前牙对刃关系,但是骨性地包天的前突的下颌就不能后退了。

  另外、看X线头影测量,看下中切牙切点闭合道与SN平面的角度,角度越大就是骨性地包天了。

  具体可参考:http://www.kouqiangwang.net/thread-3010-1-1.html

网友(3):

地包天也叫“反颌”,牙齿地包天形成与三种因素有关系。首先颌骨发育不均衡,上颌骨发育较慢,而下颌骨发育较快。其次,与遗传因素也有非常大的关系,遗传概率大致在30%左右。再者,不良的生活习惯,如孩子经常咬嘴唇(上嘴唇)为主,长期嘴唇力量加上咬合力量,就逐渐形成地包天现象。对于轻微的骨性反颌,可以做掩饰性矫正(单纯正畸),可以到达基本咬合正常,但改变不了面部外形。如果为骨性畸形,需要行正畸-正颌联合治疗进行矫正。区分牙齿是牙性地包天还是骨性地包天,需要经过专业医生的诊断和专业设备的检查才能做出判断。通常诊断地包天需要做X光检查,根据X线测量结果结合临床观察确定牙性还是骨性。

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