Objective to investigate the factors relating to rootresorption after orthodontic treatment.
目的研究影响正畸治疗后牙根吸收的部分临床因素。
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Conclusion Flat bite plate can cause rootresorption of mandibular permanent incisors, but the rootresorption is slight.
结论平面导板会造成下前牙牙根的吸收,但根吸收程度轻微。
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PURPOSE: The purpose of this study was to evaluate the effect of high pull J hook headgear(HPHG) on rootresorption of maxillary incisors during orthodontic treatment.