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目的研究Damon3矫治器对正畸患者牙周组织健康的影响。方法选择2008—2010年在昆明医学院附属口腔医院正畸科治疗的安氏Ⅰ类错青少年患者30例,随机分为试验组和对照组,各15例。试验组患者戴用Damon3矫治器,对照组戴用GeminiMBT金属托槽矫治器。戴用矫治器后3、6个月检测牙龈指数(GI)、菌斑指数(PLI)及简化口腔卫生指数(OHI-S),并进行比较分析。结果固定矫治前,试验组与对照组间各牙周指标(GI、PLI、OHI-S)差异无统计学意义(P>0.05)。戴矫治器后,2组牙周指标均随时间的延长而升高,且试验组在戴矫治器后3、6个月GI、PLI、OHI-S均明显低于对照组,差异有统计学意义(P<0.05)。结论与传统结扎式托槽矫治器相比,自锁托槽矫治器更有利于牙周组织健康。
Objective To study the effect of Damon3 appliance on periodontal tissue health in orthodontic patients. Methods Thirty patients with Class Ⅰ malocclusion admitted to orthodontics department of Stomatology Hospital Affiliated to Kunming Medical College from 2008 to 2010 were randomly divided into experimental group and control group, 15 cases each. The Damon3 appliance was used in the test group and the GeminiMBT metal bracket appliance was used in the control group. Gingival index (GI), plaque index (PLI) and simplified oral hygienic index (OHI-S) were measured at 3 and 6 months after wearing orthodontic appliances, and compared and analyzed. Results Before the fixed correction, there was no significant difference in each periodontal index (GI, PLI, OHI-S) between the experimental group and the control group (P> 0.05). After wearing the appliance, the periodontal indexes of two groups increased with time, and the GI, PLI and OHI-S in the test group at 3 and 6 months after wearing the appliance were significantly lower than those in the control group Significance (P <0.05). Conclusion Compared with the traditional ligation bracket appliance, self-locking bracket appliance is more conducive to the periodontal tissue health.