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下颌固定舌弓矫治第一磨牙反的临床应用研究 被引量:2

Study on treatment of crossbite of first molar with mandibular fixed lingual arch
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摘要 目的探讨下颌固定舌弓缩小下颌第一恒磨牙宽度的方法矫治第一恒磨牙反。方法选择正畸临床恒牙列第一恒磨牙反的患者14例,用固定舌弓缩小下颌第一恒磨牙的宽度矫治第一磨牙反,观察第一磨牙咬合关系变化,测量治疗前后下颌第一磨牙中央窝间距及舌侧龈缘的间距。结果 14例患者平均使用下颌固定舌弓2~5个月,第一恒磨牙反解除,矫治前后下颌第一磨牙中央窝间距差异具有显著性(P<0.05),舌侧龈缘间距差异不显著(P>0.05)。观察1年未见复发。结论下颌固定舌弓能有效缩小下颌第一恒磨牙宽度,矫治第一恒磨牙的反,其机理是缩小的舌弓通过磨牙带环将磨牙舌向倾斜。 Objective To investigate the clinic application of the treatment of crossbite of first molar with mandibular fixed lingual arch.Methods Fourteen patients with first molar crossbite were treated with mandibular fixed lingual arch to reduce the width of first molar.Measure the length between central fossa and gingival margin of lingual side of first molar and observe the changes in occlusion relationship.Results The mean time of using the mandibular fixed lingual arch was 2-5 months.After the treatment,all the first molars returned to normal occlusion.Significant difference was noted(P0.05) in the width of central fossa of first molar before and after the treatment,but there was no significant difference in gingival margin of lingual side of first molar(P0.05).The result maintained after 1 year.Conclusions The mandibular fixed lingual arch could be an efficient method to reduce the width of first molar to treat the crossbite of this area.Its mechanism is to make molars lingually oblique by contracting lingual arch through molar bands.
出处 《口腔医学》 CAS 2011年第1期23-25,共3页 Stomatology
基金 南京医科大学科技发展基金重点项目(06NMUZ020)
关键词 反 第一磨牙 固定舌弓 缩小牙弓 宽度 crossbite first molar mandibular fixed lingual arch reduce the arch length width
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