Objective To compare clinical effects of the artificial teeth in nickel-chromium alloy containing titanium, cobalt chromium alloy, high-gold alloy-porcelain restorations. Methods The patients treated with nickel-chromium alloy containing titanium (n = 189, 233units) , cobalt chromium alloy (n = 206,251 units) and porcelain high-gold alloy (n =97, 118units) were observed in 3 months, 1 year, 3 years, including the color of porcelain crowns, gingival inflammation, gingival margin discoloration, and the crack or fracture or collapse of porcelain situation. Results There was no significant difference( P > 0.05 ) in color, gingival margin inflammation (3 months) , the crack or fracture or collapse of porcelain between artificial teeth in nickel-chromium alloy containing titanium andte cobalt chromium alloy-porcelain crown; the rate of gingival margin color (1 year and 3 years) of nickel-chromium alloy containing titanium group was higher than that of cobalt-chromium alloy group, and it was significantly higher than that of the high-gold alloy porcelain group ( P < 0.05 ) ; the rates of crack,fracture and collapse of 3 groups with different artificial tooth were similar ( P > 0.05) . Conclusions The technic of high-gold alloy porcelain teeth has obvious advantages in chemical stability, biocompatibility and color; the artificial teeth in nickel chrome grill porcelain has been gradually replaced by the teeth made of cobalt-chromium alloy in recent years; the long term effects of Ni-Cr alloy-porcelain crown needs further research.%目的 比较含钛镍铬合金、钴铬合金、高金合金烤瓷修复体的临床应用效果.方法 选择含钛镍铬合金、钴铬合金和高金合金烤瓷修复患者分别为189例(233单位冠)、206例(251单位冠)和97例(118单位冠)修复完成后分别于3个月、1年、3年复查,检查烤瓷冠的色泽、牙龈炎症、龈缘变色以及裂纹或折裂或崩瓷情况.结果 含钛镍铬合金、钴铬合金烤瓷冠在色泽、龈缘炎症(3个月时)、裂纹或折裂或崩瓷方面无显著性差异(P＞0.05)；龈缘变色(1年及3年时)含钛镍铬合金烤瓷冠高于钴铬合金,并明显高于高金合金烤瓷组(P＜0.05)；裂纹或折裂或崩瓷,3种材料烤瓷牙相比较,差别无显著性(P＞0.05).结论 高金合金烤瓷冠在化学稳定性、生物相容性、色泽方面具有明显优势；钴铬合金近几年来已逐步取代镍铬合金烤瓷冠；镍铬合金烤瓷冠远期效果有待进一步考证.
展开▼
