Simple Cross Bite Treatment

UL1 is in cross bite (Fig.1).  Composite is placed on the incisal edge of the lower centrals in a sloped fashion so that when the 7.5 year old patient closes the mouth, the lower centrals slide lingual to UL1 (Fig.2-4).  In short time, the cross bite will be expected to be corrected.

Composite will be removed once the mission is accomplished.

In three weeks, the upper left central incisor has moved labially (Fig.5,6).  The cross bite and composite-related open bite have been corrected (as compared to Fig.3,4).

Four months after composite treatment, the upper right lateral incisor has not enough space to erupt normally (Fig.7,8).  It appears that comprehensive orthodontic treatment is needed.  Necessity of early comprehensive orthodontic treatment is more obvious when the young patient returns 6 months later. 

Anterior Cross Bite

简易反合矫正

七岁半男孩单个中切牙反合（图一），在汪贻静建议下，在两个下中切牙切缘放置树脂（图二），当他闭口时，左上中切牙位于树脂唇侧（图三，四）。处理方面有问题吗？

但是当他有意下颌往前移，反合仍然形成。好像前牙反合与后牙反合有个下颌滑动问题。

三个星期后，左上中切牙已经往唇侧移位，反合矫正，树脂造成的开合消失（图五，六，与图三，四对比）。

小病号树脂反合矫正后四个月复查，中切牙反合没有复发，但是右上侧切牙没有空间萌出（图七，八），左上侧切牙间隙也不够，下切牙也拥挤，现在应该扩弓？他快八岁了。

Xin Wei, DDS, PhD, MS 1st edition 08/05/2013, last revision 06/10/2014