摘要
目的:评价利用组合支抗种植体竖直下颌舌倾磨牙的临床效果。方法:5例下颌磨牙严重舌倾患者,在舌倾磨牙同侧前磨牙区植入两枚微型种植体,取1段0.48mm×0.64mm不锈钢方丝,用釉质粘结剂将其固定于种植体头部,使两颗种植体连接成为一个整体,并且使不锈钢方丝一端位于舌倾磨牙的颊侧根尖水平处,弯折使其形成牵引钩,方便钩挂皮圈。在舌倾磨牙牙合面粘结舌侧扣,用链状皮圈连接舌侧扣和牵引钩,使橡皮圈产生1N力,颊向倾斜和压低舌倾磨牙。结果:所有支抗种植体植入顺利,在治疗过程中能行使支抗功能,未出现松动脱落。经5个月左右的治疗,5例患者舌倾的下颌磨牙均和对合牙形成良好咬合。磨牙舌倾得到矫正,未见明显松动,且颊舌向转矩正常,也未发现明显的牙根吸收与牙髓坏死,牙周状况良好。结论:应用组合支抗种植体能有效地矫正严重下颌舌倾磨牙。
Objective To study the efficiency of connected miniscrews as anchorage for correction of lingual tipping lower molar.Methods 4 patients with severe lingual tipping lower molar were selected.Two miniscrews were placed on the buccul alveolar closed to the lingual tipping molars.1straight 0.48 mm × 0.64 mm orthodontic stainless steel archwires were welded.The distal ends of the wires were bent to form hooks stretching to the buccal sides of the tipping molars at the apical level.The stainless steel archwire was fixed to the heads of the two implants with light cured resin to make the two implants together as anchorage for lingual tipping molar intrusion.Results All the miniscrews were successful and there was no tooth mobility in the treatment.After 4-5 months＇ treatment,lingual tipping molars were corrected.No obvious mobility was observed on the molars after treatment.The periodontal condition was well kept.There was no elongaion,no obvious root resorption or pulp necrosis.Conclusion Lingual tipping mandibular molars can be effectively corrected with connected miniscrews anchorage.
出处
《中国美容医学》
CAS
2015年第24期47-50,共4页
Chinese Journal of Aesthetic Medicine
基金
浙江省自然科学基金(No.LY13C100002)
关键词
正畸
组合
微型种植体
支抗
舌倾磨牙
orthodontic
connection
miniscrews
anchorage
lingual tipping molar
