桩核材料对全瓷冠半透性和颜色的影响
李东方;万乾炳;杨瑛
【期刊名称】《实用口腔医学杂志》 【年(卷),期】2011(027)002
【摘要】目的:研究不同材料桩核对全瓷冠不同部位半透性和颜色的影响.方法:制作全瓷桩核、氧化锆桩树脂核、抛光金合金桩核、抛光钯银合金桩核、钴铬合金烤瓷桩核各3 个,测量不同桩核背景下IPS-Empress2全瓷冠唇面颈1/3、中1/3和切1/3的透射率和颜色参数,计算色差(ΔE).结果:在全瓷桩核和氧化锆桩树脂核背景下,全瓷冠的颈1/3和中1/3的透射率最高;不同桩核下全瓷冠切1/3的透射率无差别.全瓷桩核背景的全瓷冠的L*值最高,抛光钯银合金桩核背景的L*值最低;在全瓷冠的颈1/3,抛光钯银合金桩核的L*、a*、b*值最低;在全瓷冠的中1/3,抛光钯银合金桩核的L*、a*值最低.结论:应用IPS-Empress 2全瓷冠修复根管治疗后的上前牙时,推荐使用全瓷桩核和氧化锆桩树脂核,可以考虑使用钴铬合金烤瓷桩核或抛光金合金桩核,不推荐使用抛光钯银合金桩核.%Objective: To study influence of different types of posts and cores on the translucency and color of all-ceramic crown.Methods: Five types of posts and cores ( Cerapost with Empress cosmo, Cerapost with composite resin, polished gold alloy, polished PaAg alloy and ceramized Co-Cr alloy)were made. Three surface zones surface( cervical, middle and incisal) of IPS-Empress 2 crowns with different posts and cores were measured for the shifts of translucency and color with a spectroradiometer (PR-650). Results: The transmittance increased
桩核材料对全瓷冠半透性和颜色的影响
