上颌中切牙间隙矫治初探赵方保点，脱敏。及时换上０．０１６英寸澳丝，弯制第一序列弯曲以求一一一一一一理想的前牙弓形。第七月时，拆除２：Ｉ１９弓丝“８”字连续结扎保持。一月后复查Ｂ＝ＩＭ排列整齐，深覆胎、深覆盖有所改善，矫治效果稳定。２．讨论用活动矫治器... Preliminary study of the maxillary central incisor gap correction Zhao Fangbao point, desensitization. Timely put 0.016 inches Australian wire, bending the first series of bending in order to eleven one hundred and eleven ideal anterior arch. The seventh month, remove the 2: I19 arch wire “8” continuous ligation to maintain. After a month review B = IM neat, deep tire, deep coverage has been improved, the treatment effect is stable. 2. Discussion with the activity appliance ...