摘要
目的比较三种排龈时间对修复楔状缺损的影响。方法选择颈部边缘平龈或位于龈下1 mm内的楔状缺损患牙120颗,修复前使用排龈线于颊侧龈沟分别进行三种时间的排龈(Ⅰ组:5 min;Ⅱ组:10 min;Ⅲ组:15 min),光固化复合树脂修复,1年后随访,以改良USPHS临床评价修复体标准对各组修复材料进行疗效评估。结果三组修复材料均无脱落,排龈5 min组修复材料边缘密合性、边缘着色情况、继发龋及牙龈炎症状况的不满意率均显著高于排龈10 min组及排龈15 min组(P<0.05)。排龈10 min组及排龈15 min组修复材料的边缘密合性、边缘着色情况、继发龋及牙龈炎症状况的不满意率无统计学差异。结论排龈5 min与排龈10 min及15 min的修复效果存在统计学差异(P<0.05),为了得到满意的修复效果,临床修复楔状缺损,应至少排龈10 min。
Objective To evaluate the clinical effect of three gingival retraction time on treatment of non-carious cervical lesions. Methods A total of 120 teeth with wedge-shaped defects at subgingival depth of 0 - 1 mm were selected and divided into three groups, to which gingival retraction cords were applied on the buccal sulcus with three different retraction time （5, 10 and 15 mi- nutes）. All the defects were filled with composite resin, and their owners were followed up for one year. Results None of the resto- rations were lost in the three groups. There were significant differences in the main indexes including marginal adaptation, recurrent caries, marginal discolor and gingival response （ P 〈 0.05 ） between 5-minute group and any of the other two groups. There were no significant differences in the main indexes between 10-minute group and 15-minute group （P 〉 0.05）. Conclusion To obtain clinically satisfactory effect, gingival retraction time should be at least 10 minutes before the treatment of non-carious cervical lesions.
出处
《临床军医杂志》
CAS
2013年第12期1269-1270,共2页
Clinical Journal of Medical Officers
关键词
排龈时间
楔状缺损
修复材料
gingival retraction time
non-carious cervical lesion
repair materials
