目的 觀察含腎上腺素排齦線修復(fù)牙頸部楔狀缺損的臨床療效。方法 選取唐山市協(xié)和醫(yī)院2011年1月—2013年11月收治的唇頰面牙頸部楔狀缺損患者120例，將其隨機(jī)分為治療組（60例）和對(duì)照組（60例），分別采用0.1%腎上腺素排齦線和不含藥排齦線進(jìn)行治療，以排齦前1 d、排齦后0.5 h、1、3、7、14 d和1個(gè)月為觀察點(diǎn)，測(cè)定齦溝液（GCF）量、天冬氨酸轉(zhuǎn)氨酶（AST）和堿性磷酸酶（ALP）水平變化。結(jié)果 兩種排齦方法排齦效果沒(méi)有統(tǒng)計(jì)學(xué)差異（P＞0.05）；兩組患者排齦后0.5 h GCF量均有所增加，排齦后1、3 d與排齦前比較差異均顯著（P＜0.05）；排齦后的0.5 h和1、3 d兩組患者GCF中AST、ALP均有明顯增高的趨勢(shì)，1、3 d與排齦前比較，差異均具有統(tǒng)計(jì)學(xué)意義（P＜0.05）；對(duì)照組出血率（43.3%）高于治療組（3.3%），差異有統(tǒng)計(jì)學(xué)意義（P＜0.05）。結(jié)論 兩種排齦方法對(duì)牙周組織都存在一定損傷，但均可恢復(fù)；腎上腺素排齦線更有利于止血，降低出血發(fā)生率。

Objective To observe the clinical efficacy of gingival retraction cord containing epinephrine in restoring cervical abrasion lesions. Methods The patients (120 cases) diagnosed with cervical abrasion lesions in Tangshan Union Medical College Hospital from January 2011 to November 2013 were randomly divided into treatment (60 cases) and control (60 cases) groups. The patients in the treatment group were treated with gingival retraction cord containing epinephrine while the patients in the control group were treated with pure cord. The quantity of gingival crevicular fluid (GCF) and the activities of aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in GCF were observed 1 d before treatment, and 0.5 h, 1, 3, 7, 14, and 28 d after treatment. Results There were not significant difference (P > 0.05) between the two groups. The quantity of GCF in patients of two groups increased 0.5 h after treatment. The quantity of GCF 1 and 3 d after treatment in the treatment group was more than that in the control group with significant difference (P < 0.05). The quantities of AST and ALP in GCF were significantly higher 0.5 h, 1, and 3 d after treatment. The quantities of AST and ALP in GCF 1 and 3 d after treatment in the treatment group were more than that in the control group with significant difference (P < 0.05). The bleeding rate in the control group (43.3%) was higher than the observed group (3.3%) with significant difference (P < 0.05).. Conclusion Both techniques caused a temporary inflammation in periodontal tissue. Gingival retraction cord containing epinephrine is more conducive to stop bleeding, and reduce the incidence of bleeding.