高金合金与镍铬合金烤瓷冠临床应用效果的比较

目的：探讨和比较高金合金、含钛的镍铬合金（Tilite、钛莱特）、镍铬合金烤瓷冠的临床应用效果。方法：分别制作高金合金、钛莱特、镍铬合金烤瓷冠各60个，共180个。在烤瓷冠完成时和复查时，临床检查冠的颜色、颈缘染色、边缘密合度和牙折断、折裂情况，观察3年。结果：钛莱特和镍铬合金烤瓷冠在颜色、颈缘染色、边缘密合度方面无显性差异（P＞0.05）；高金合金烤瓷冠没有颈缘染色，在颜色和边缘密合度方面优于Tilite和镍铬合金烤瓷冠（P＜0.05）；3组都未见牙折断、折裂及组织过敏反应。结论：高金合金烤瓷冠比镍铬合金烤瓷冠有更好的临床效果。

Comparision of the clinic effect of high gold alloy and Ni-Cr alloy veramic crown

Objective: To compare the clinic effect of the ceramic crowns made of high gold alloy and Ni-Cr alloycontaining Ti (Tilite) and Ni-Cr alloy. Methods: 180 ceramic crowns were made of three alloys respectively. each 60pieces. The color, margin fitness,cervical gray line and fracture of the ceramic crowns were checked the following 3 years.Results: Tilite ceramic crowns were similar to Ni-Cr alloy ceramic crowns in color, cervical gray line, margin fitness andfracture (P>0.05). The high gold alloy ceramic crowns had no cervical gray line and were better than Tilite and Ni-Cr alloyceramic crowns in color and margin fitness significantly (P<0.05). The fracture of ceramic crowns and allergy was notfound. Conclusion: The clinic effects of high gold alloy ceramic crowns are better than Tilite and Ni-Cr alloy ceramiccrowns.