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慢性牙周炎(chronic periodontitis,CP)使牙槽骨吸收,支持组织减少,引起继发性创伤,使患牙移位伸长。这种病理性移位好发于前牙,也可发生于后牙。由于牙齿伸长后使冠根比例失常,患牙松动加重。牙周基础治疗虽然能消除炎症,但不能使伸长的牙齿回到原位。应用正畸的方法,可以使患
Chronic periodontitis (CP) causes the alveolar bone to absorb, reduce the supporting tissues, cause secondary trauma, and cause the tooth to shift and elongate. This pathological shift occurs in the front teeth, can also occur in the posterior teeth. Due to tooth crown elongation after the proportion of abnormal root, loose teeth aggravate. Periodontal basic treatment can eliminate inflammation, but can not make the elongated teeth back to its original position. Application of orthodontic methods, you can make trouble