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背景:镍铬合金烤瓷冠因其机械性能优良、低廉价格,在国内口腔修复领域广泛应用。目的:观察镍铬合金烤瓷冠对患者尿中镍、铬离子的量的影响。方法:选择2009-03/2010-03在新疆医科大学第一附属医院就诊戴用镍铬合金烤瓷冠患者55例为实验组,同期未做任何修复治疗者55例为对照组,比较2组患者尿中镍、铬的离子水平。结果与结论:镍铬合金冠修复患者尿镍、铬离子水平与对照组接近(P>0.05),且镍铬合金烤瓷冠数量<5个与≥5个的患者的镍、铬离子水平也接近(P>0.05),但与使用镍铬合金烤瓷冠<5年的患者相比,使用年限≥5年者的尿镍、尿铬离子水平升高(P<0.05,P<0.01)。提示镍铬合金烤瓷冠修复不会影响患者尿中镍、铬离子水平,但镍铬合金烤瓷冠使用年限会影响患者尿中的镍、铬离子的水平。
Background: Nickel-chromium alloy porcelain crowns are widely used in the field of oral restoration due to their excellent mechanical properties and low price. Objective: To observe the effect of nickel-chromium alloy porcelain crowns on the amount of nickel and chromium in urine. Methods: From March 2009 to March 2010, 55 patients with Ni-Cr alloy porcelain crowns treated in the First Affiliated Hospital of Xinjiang Medical University were selected as the experimental group and 55 cases without any repair treatment during the same period as the control group. Urinary nickel, chromium ion levels in patients. RESULTS AND CONCLUSION: Urinary nickel and chromium levels in patients with nickel-chromium alloy crowns were similar to those in the control group (P> 0.05). Nickel and chromium levels in patients with nickel-chromium alloy crowns <5 and ≥ 5 were also significantly lower than those in controls (P> 0.05). However, urinary nickel and urinary chromium ion levels in those who were more than 5 years old were significantly higher than those who used the nickel-chromium alloy crowns <5 years (P <0.05, P <0.01). Tip nickel-chromium alloy porcelain crown repair will not affect the urine of patients with nickel, chromium ion levels, but the life of nickel-chromium alloy porcelain crowns will affect the urine of patients with nickel, chromium ion levels.