2种不同矫治技术出现牙龈折痕的临床分析

摘要

目的：探讨2种不同矫治技术对出现牙龈折痕的影响。方法分别选择75例拔除前磨牙行直丝弓固定矫治和22例拔牙无托槽隐形矫治病例，比较这2种不同矫治技术的牙龈折痕发生率，并针对性别、年龄、关闭间隙距离以及矫治时间等因素进行 logistic 回归分析。结果不同矫治技术出现牙龈折痕的差异无统计学意义。性别、关闭间隙距离和关闭间隙时间对牙龈折痕的出现无统计学意义，年龄与牙龈折痕的出现呈正相关，且有统计学意义。结论牙龈折痕的出现不受矫治技术的影响，可能与年龄有一定的相关性。%Objective Todiscuss two kinds of orthodontic technology that caused the gingival invagination and the influence on its oc-currence.Methods 75 cases that used straight wire application system (with the first premolar extracted)and 22 cases that used in-visible application system were selected and the incidence rate of gingival invagination was compared between two groups.Logistic re-gression analysis was done with regard to such factors as gender,age,closing the extraction space and the treatment time.Results There was no significant difference inthe occurrence rate of gingival invagination in these two systems.Gender,the time of closing the extraction space and the size of extraction space did not influence the occurrence of gingival invagination while age had the positive cor-relation with gingival invagination.Conclusions The gingival invagination is not influenced by different methods of orthodontic tech-nology.It might have correlation with age.