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目的探讨传动直丝弓技术打开咬合的临床效果。方法收集开封市第二人民医院2011年3月至10月采用传动直丝弓技术打开咬合的患者5例,上下颌均采用0.016英寸的澳大利亚弓丝,去掉旧托槽,前牙区粘接传动托槽,于颊面管近中3～5 mm处做后倾弯,后倾弯的程度使弓丝插入颊面管后弓丝前部到上颌或下颌前庭沟底即可。然后结扎弓丝入槽,采用Ⅱ类牵引,力量为60 g左右。结果 LI-NB、yaxis、P.-NB、LI-NB在治疗前后比较差异无统计学意义(P>0.05),UI-NA、UI-NA、UI-SN、NP-FH、ANB、SNB、SNA、UI-LI、MP-FH治疗前后比较差异有统计学意义(P<0.05)。结论传动直丝弓技术打开咬合的临床效果好,值得推广。
Objective To investigate the clinical effect of straight wire arch technology to open bite. Methods The Second People’s Hospital of Kaifeng City in March 2011 to October using straight wire arch technology to open the occlusion in 5 patients, the upper and lower jaws are used in Australia 0.016-inch arch wire, remove the old brackets, anterior teeth area bonding drive Brackets, near the buccal tube in 3 ~ 5 mm at the post-tilt, the degree of back-bend after the arch wire into the buccal tube anterior arch wire to the maxillary or mandibular vestibular groove can be. Then ligature bow wire into the groove, using Ⅱ traction, the power of about 60 g. Results There was no significant difference of LI-NB, yaxis, P.-NB and LI-NB before and after treatment (P> 0.05) SNA, UI-LI, MP-FH before and after treatment was statistically significant (P <0.05). Conclusion The clinical effect of straight wire arch technology to open bite is good and worth promoting.