唇腭裂患者牙槽突裂植骨术前使用半固定式四眼圈簧扩大上牙弓的正畸治疗

目的探讨半固定式四眼圈簧矫治器对伴有上牙弓狭窄的唇腭裂患者的扩弓效果。方法选择15例需行牙槽突裂植骨术的唇腭裂患者,术前正畸治疗先采用半固定式四眼圈簧矫治器扩大上牙弓,测量扩弓前、中、后的上颌左右尖牙、第一前磨牙、第一磨牙间宽度的变化。结果经过半固定式四眼圈簧矫治器扩弓治疗的患者,均在5个月左右的时间内有效地扩大了上牙弓。正畸治疗后上牙弓扩大,牙齿排列基本整齐,为牙槽突裂植骨术提供了良好的条件。结论半固定式四眼圈簧矫治器可有效扩大唇腭裂患者的上牙弓,同时配合固定正畸治疗,疗效确切,使用方便。

Semi-attached quad-helix appliance can expand the maxillary arches in patients with cleft lip and palate before alveolar bone grafting

Objective To evaluate the clinical effect of semi-attached quad-helix appliance in expanding the nar-row maxillary arches in patients with cleft lip and palate.Methods 15 cases with cleft lip and palate were selected and treated by semi-attached quad-helix appliance.Before,during,and after treatment,the dental arch width between cuspid,the first premolar and first molar were measured.Results The upper dental arches of all patients were ex-panded effectively in about five months.After orthodontic treatment,the upper dental arches were expanded,and the teeth were alined regularly,which provided good conditions for alveolar bone grafting.Conclusion The semi-attached quad-helix appliance with the fixed orthodontic treatment can expand the narrow maxillary arches in patients with cleft lip and palate effectively and conveniently.