<正>Objective:To evaluate the orthopedic effects of a new method to treat skeletal crossbite in the early mixed dentition.Methods:Twenty cases（5.8-7.5 years old）with skeletal crossbite were treated by bonding the bite plate combined with the face mask protracting the upper jaw.Cephalometric radio- graphs were taken and analyzed before and after treatments.Results:On average

in all 20 cases the max- illa was moved by 2.06 mm forward;the mandible was turned 2.45°downward and backward;the skeletal crossbites were corrected and the facial profiles were improved satisfactorily.The period of treatment was conducted for 1.7 months on average.Conclusion:A good effect can be achieved by bonding bite plate combined with the face mask protracting the upper jaw to treat skeletal crossbite in the early mixed denti- tion

which will benefit the craniofacial growth and the development of young children.