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目的:探讨微钛钉种植体支抗矫治安氏Ⅱ类骨性上颌前突的临床疗效。方法:选取本院2014年1月至2015年1月收治的安氏Ⅱ类骨性上颌前突患者40例,随机分为两组,各20例,研究组患者采用微钛钉种植体支抗矫治术,对照组患者采用横腭杆加口外弓增强支抗,比较两组患者的临床疗效。结果:(1)治疗前,两组患者L1-U1、SN-U1、Y-U6、Y-U1比较,差异均无统计学意义(P>0.05),治疗后,全部患者SN-U1、Y-U1明显低于治疗前,L1-U1明显高于治疗前,对照组患者Y-U6明显高于治疗前,差异具有统计学意义(P<0.05);治疗后,研究组患者SN-U1明显高于对照组。(2)研究组患者MP-L1、SN-U1、Y-L1、Y-U1减少程度明显高于对照组,Y-U6增加程度明显低于对照组,两组比较,差异具有统计学意义(P<0.05)。结论:微钛钉种植体支抗矫治安氏Ⅱ类骨性上颌前突的临床疗效显著,可防止上颌磨牙前移,为安氏Ⅱ类骨性上颌前突的正畸矫治提供支抗来源。
Objective: To investigate the clinical effect of micro-titanium nail implants in treating Class Ⅱ skeletal maxillary protrusion. Methods: Forty patients with Class Ⅱ skeletal maxillary protrusion admitted to our hospital from January 2014 to January 2015 were randomly divided into two groups of 20 patients. The study group was treated with micro-titanium nail implants Orthodontics, the control group of patients with lateral palatal plus bow enhanced support, compared the clinical efficacy of two groups of patients. Results: (1) There was no significant difference in L1-U1, SN-U1, Y-U6 and Y-U1 between the two groups before treatment (P> 0.05) U1 was significantly lower than before treatment, L1-U1 was significantly higher than before treatment, the control group patients Y-U6 was significantly higher than before treatment, the difference was statistically significant (P <0.05); after treatment, the study group patients with SN-U1 was significantly Higher than the control group. (2) The reduction of MP-L1, SN-U1, Y-L1 and Y-U1 in the study group was significantly higher than that in the control group, while the increase of Y-U6 in the study group was significantly lower than that in the control group P <0.05). Conclusion: The clinical effect of micro-titanium nail implants in the treatment of Class Ⅱ skeletal maxillary protrusion is significant, which can prevent the maxillary molars from advancing and provide the source of support for the orthodontic treatment of Class Ⅱ skeletal maxillary protrusion.