论文部分内容阅读
目的探讨2×4技术矫治混合牙列期上颌前牙多生牙伴反颌的方法及疗效。方法选择2008年~2014年我院口腔科收治的前牙多生牙伴反颌患者20例作为研究对象,通过拍摄曲面断层片,发现上颌前牙区多生牙,拔除后应用2×4技术矫治,比较矫治前后的头颅侧位片。结果 20例患者均取得满意的疗效,前牙反颌解除,覆盖正常。SNA角平均增加2.8°,ANB角平均增加3.1°,U1NA角平均增加2.5°,差异有统计学意义(P<0.05)。结论 2×4矫治技术,通过佩戴下颌颌垫,解除反颌,促进上颌骨发育。因轻力对混合牙列期恒牙发育影响小,操作简单、安全、高效、疗效满意,值得临床推广应用。
Objective To investigate the method and effect of 2 × 4 technique on the treatment of mixed maxillary anterior teeth with multiple teeth and anti-maxillary teeth. Methods Twenty patients with anterior teeth of multiple teeth with lumbar denticulation treated in our hospital from 2008 to 2014 were selected as the study objects. The surface of maxillary anterior teeth was found to have many teeth by shooting curved surface slice. After removal, 2 × 4 technique Correction, comparison before and after correction of the cranial flaps. Results All the 20 patients achieved satisfactory curative effect. The average SNA angle increased by 2.8 °, the average ANB angle increased by 3.1 °, and the U1NA angle increased by 2.5 ° on average (P <0.05). Conclusion 2 × 4 orthodontic technique can relieve maxillary remodeling by wearing mandibular pad. Because of light force on the hybrid dentition development of permanent teeth small, simple, safe, efficient, effective, worthy of clinical application.