title: [Unconventional extraction of trauma-caused root ankylosis of maxillary central incisors].
authors: Lei
authors: L
authors: Chen
authors: Yin-Zhong
authors: YZ
authors: Duan
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D020254:Tooth Ankylosis / Q000209:etiology* / Q000601:surgery*; D014081:Tooth Extraction / Q000379:methods*; D014092:Tooth Root; D014947:Wounds and Injuries / Q000150:complications*