金沉积烤瓷冠适合性的体外实验研究

目的：测量金沉积烤瓷冠的边缘浮出量及粘固剂的厚度,并与镍铬合金烤瓷冠相比较,为金沉积烤瓷冠的临床应用提供适合性方面的理论依据。方法：用片切法测量两组全冠粘固前、后边缘浮出量及粘固剂的厚度。结果：金沉积烤瓷冠粘固前、后的边缘浮出量分别为（26.32±9.61）μm、（48.31±14.25）μm,粘固剂厚度为（38.15±14.32）μm,与镍铬合金烤瓷冠相比较差异有统计学意义（P〉0.05）;两组全冠粘固前和粘固后的边缘浮出量差异有统计学意义（P〉0.05）。结论：金沉积烤瓷冠适合性明显优于镍铬合金烤瓷冠;粘接对全冠修复体的边缘浮出量有影响。

In vitro study on the suitability of porcelain-fused-to-galvanized-gold crown

Objective:To measure the marginal opening of porcelain-fused-to-galvanized-gold crown and thickness of cement,compare these indexes between porcelain-fused-to-galvanized-gold crown and Ni-Cr alloy veramic crown,and provide theoretical evidence for clinic application of porcelain-fused-to-galvanized-gold crown. Methods: Measured the anterior and posterior marginal opening and thickness of cement with slicing method. Results: The anterior and posterior marginal opening of porcelain-fused-to-galvanized-gold crown were (26.32±9.61) μm and (48.31±14.25) μm,respectively,the thickness was (38.15±14.32)μm,with significant difference compared with Ni-Cr alloy veramic crown (P<0.05). Conclusion: The suitability of porcelain-fused-to-galvanized-gold crown is more satisfactory than Ni-Cr alloy veramic crown. And the cement has effect on marginal opening.