儿子换牙比较晚,小学三年级时还豁着大门牙。我看他说话漏风,吃东西没法咬,替他难受之时也盼着他赶紧换完牙。可一旦盼来了新生的大门牙,真是吓一跳,怎么小嘴里能长出这么大的门牙!由于牙太大,没有足够的空间,两颗门牙只好挤出,成了典型的暴牙。其它的新生恒牙,也都因空间有限而处于里出外进的拥挤状态。 Son changing his teeth later, the third grade primary school also save the front teeth. I think he was talking air leaks, eating can not bite, for his distress, also waiting for him to change teeth quickly. But once the hope of the newborn front teeth, really surprised, how small mouth to grow such a large incisor! Because the teeth are too large, there is not enough space, the two incisors had to squeeze out, has become a typical toothy . Other new permanent teeth, but also due to space constraints in and out of the crowded state.