Investigation of differences in subjective demand for orthodontic treatment of middle school students in zones with different economic levels

Chen Guo1，2, Yin Bei2, Zhao Qing2, Xu Yichen2, Huo Jingyi2, Li Zhang’ao2, Meng Mingmei2, Chen Yafei2.

West China Journal of Stomatology . 2012, (4): 407 -409 . DOI: 10.3969/j.issn.1000-1182.2012.04.019