不同品牌不透明层厚度与色度的研究  

Study on Different Thickness and Chromatics of Various Opaques

作　　者：罗云[1] 楼北雁[2] 孙俊[1] 巢永烈[1] 

机构地区：[1]四川大学华西口腔医院修复科,四川成都610041 [2]四川大学华西口腔医院特诊科,四川成都610041

出　　处：《华西口腔医学杂志》2006年第6期506-508,共3页West China Journal of Stomatology

基　　金：高等学校博士学科点专项科研基金资助项目(9845)

摘　　要：目的研究不同品牌不透明层的厚度对修复体颜色的影响。方法220片镍-铬合金样品片平均分为VITA组、SHOFO组、CARAT组和EXCELCO组4大组,分别上相应品牌的不透明瓷层,各大组中再按瓷层厚度分别分为1、2、3、4、5小组,每小组11片。瓷层厚度用薄层胶纸片形成涂塑模具进行控制。使用TC-PⅡG型全自动测色色差计测定样品片的x、y、△L值,研究不同品牌不透明层厚度与色度的关系。结果试片明度随不透明层的增厚呈增亮趋势,并趋向稳定在某一厚度值而不再增加,该厚度值在不同品牌间有所不同,其中CARAT系列明度变化最小;而样本色度也随不透明层的增厚逐渐稳定,到达一特定厚度时可完全遮盖底层金属色。结论不透明层在达到一特定厚度时可完全遮盖底层金属色,其中CARAT组的这一厚度值最小,遮色能力相对较强。Objective To study the effect existed in the course of adopting different thickness and chromatics of various opaques so that a good methods can be provided for clinical care in prosthodontics. Methods A model of using the thin plastic paper to control the ceramic thickness was applied in this test. The data of chromaticity was measured by TC-P Ⅱ G auto color difference meter and its results was processed by computer. Results The value of brightness had an uptrend increase with augment of opaques thickness. Metal base color was opaqued and the basic hue was set. A lower and unstable value, besides a relative stable Y, was measured with the uncompleted opaquing. A stability of hue had been gradually concentrated within a certain range accompanying with the increase of opaquing ceramic thickness. A concentrated hue in the second thickness was found in CARAT ceramic which had high ability of opaque and had a stable hue of ceramic in comparison with other opaques. Among those changes, CARAT＇s brightness showed a minimal change; a gradual stability of chromatics was presented and was limited within a certain range though the augment of opaques. Conclusion The metal color in base could be completely opaqued while opaques thickness reaches a certain range. CARAT is the materials of minimal thickness and has relatively strong capacity for opaques.

关 键 词：固定修复 颜色 不透明层 

分 类 号：R318.08[医药卫生—生物医学工程]