桩核材料对全瓷冠半透性和颜色的影响  

Influence of different posts and cores on the translucency and color of all-ceramic crown

作　　者：李东方[1] 万乾炳[2] 杨瑛[1] 

机构地区：[1]南昌大学附属口腔医院修复科,330006 [2]四川大学华西口腔医学院修复科

出　　处：《实用口腔医学杂志》2011年第2期173-176,共4页Journal of Practical Stomatology

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 Pa-Ag 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 obviously from cervical part to incisal part of the crowns and the transmittance of the crowns with zirconium oxide post and core was the highest.The L＊ values of the crowns with Cerapost and Empress cosmo were the highest while that of polished Pa-Ag alloy were the lowest.In the cervical zone,The L＊a＊ b＊ values of the crowns with polished Pa-Ag alloy post and core were the lowest.In the middle zone,the L＊a＊ values of the crowns with polished Pa-Ag alloy post and core were the lowest.Conclusion：In combination with IPS-Empress 2 crowns,zirconium oxide post and core are suitable for routine use in the anterior dentition,polished gold alloy and ceramized Co-Cr alloy can be recommended for clinical practice.Polished Pa-Ag alloy posts and cores can not be recommended for clinical practice.

关 键 词：半透性 透射率 颜色 桩核 全瓷 

分 类 号：R783.3[医药卫生—口腔医学]