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| Twin-block矫治器治疗下颌后缩患者牙颌面硬组织及颞下颌关节变化的研究 |
| Research on effects of Twin-block appliance on maxillofacial profile and temporomandibular joint in mandibular retrusion |
| 投稿时间：2016-10-09 修订日期：2016-10-09 |
| DOI： |
| 中文关键词: Twin-block矫治器 颞下颌关节 下颌后缩 |
| 英文关键词: Twin-block appliance temporomandibular joint mandibular retrusion |
| 基金项目:国家自然科学基金青年项目(项目编号：31400841) |
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| 中文摘要: |
| 目的：研究Twin-block矫治器对青少年安氏Ⅱ类错牙合下颌后缩患者牙合面及颞下颌关节的改建能力,从而评估该矫治器的矫治效果。方法：选取20例替牙期及恒牙列早期安氏II类错牙合下颌后缩患者,采用Twin-block矫治器进行治疗,治疗前后均拍摄X线头颅侧位定位片及颞下颌关节核磁共振片,进行牙合面硬组织及髁状突的测量。结果：与治疗前相比,Co-Gn、Co-Go、Go-Gn长度均显著增加,差异有统计学意义；髁状突高度显著增加,关节前、上、后间隙无明显变化。结论：Twin-block矫治器对生长发育高峰期患者具有明显的骨矫形作用,髁状突的适应性改建是其主要机制。 |
| 英文摘要: |
| Objective To research the clinical effects of Twin-block appliance on the hard tissue structure and temporomandibular joint of the patients with skeletal mandibular retrusion at the peak stage of development. Methods 20 patients with a skeletal Angle Class Ⅱ mandibular retrusion were treated with Twin-block appliance. The skeletal and dental changes were analyzed with reference to the lateral cephalograms, and temporomandibular joint changes were evaluated by means of magnetic resonance imaging before and after the treatment. Results After treatment，there was significant increase in the length of Co-Gn、Co-Go and Go-Gn compared with before treatment. Significant changes took place in growth of height of condyle. No significant differences were found about parameters of joint space. Conclusions Twin-block appliance has a significant bone orthopedic effect on mandibular retrusion patients at the peak stage of development, stimulate adaptive remodeling of condylar. |
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