Medically it is possible to correct half-mouth teeth, only for the correction of half-mouth teeth have fairly high requirements in the orthodontic design process to take into account the bite relationship and to achieve the true bite purpose and other circumstances, does not meet the requirements of half-mouth orthodontic to do full mouth orthodontic, because orthodontic teeth is not simply aligning teeth, but to maintain the teeth themselves on the basis of chewing function, so that the teeth become more beautiful, healthier, and Half mouth orthodontic teeth is a certain harm, as follows: 1, the bite relationship will become worse, if only correct the upper or lower row of teeth is unable to adjust the upper and lower jaw bite relationship, the doctor is difficult to align the teeth at the same time to go with the other side of the teeth bite relationship for adjustment, will lead to correction of the bite relationship becomes worse or even affect the chewing function of the teeth; 2, increase the recurrence rate of correction, half mouth orthodontic not only Easy to make the bite relationship worse, the chances of recurrence after correction is also greatly increased, half mouth orthodontic teeth are prone to teeth and jaw teeth are not coordinated, so that the bite relationship in an unstable state, time will still be prone to recurrence.