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目的比较牙冠延长术和对症治疗在前牙桩冠后牙龈炎的远期治疗效果。方法随机选取临床病例,经查桩冠后牙龈炎存在并排除材料过敏及全口牙龈炎所致,随即分为两组,实验组采用牙冠延长术,对照组局部及全身抗感染治疗。观察6个月后的复发情况。结果 6个复诊观察35颗牙冠延长术牙龈炎的复发率为2.86%,30颗对证治疗者复发率为100%。结论根据生物学宽度行牙冠延长术对治疗桩冠后牙龈炎有较好远期疗效,经6个月后观察复发率明显低于对照组。
Objective To compare the long-term effect of crown extension and symptomatic treatment of gingivitis in anterior crowns. Methods The clinical cases were randomly selected. The gingivitis was examined by the post-crown gingivitis, which was caused by the material allergy and gingivitis of the whole mouth. The patients were randomly divided into two groups. The experimental group was treated with crown extension and local and systemic anti-infection in the control group. Recurrence after 6 months was observed. Results The recurrence rate of gingivitis was 35% in six follow - up visits, 2.86%, and 100% in 30 treatment recipients. Conclusion According to the biological width of the crown extension surgery for the treatment of posterior gingivitis post crown better long-term efficacy after 6 months of observation the recurrence rate was significantly lower than the control group.