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《Academic Journal of Second Military Medical University》 2015-01
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Analysis of linearity between light transmittance and color value of three different brands of zirconia ceramics

LI Chen;WANG Shao-hai;WANG Da-lin;Department of Stomatology,Changhai Hospital,Second Military Medical University;  
Objective To analyze the relationship between the light transmittance and the color value of 3different brands of zirconia dental ceramic materials of various thicknesses and colors,so as to provide evidence for a new indicator to the Colorimetric system to better simulate the natural dentin color.Methods X-rite color i7 spectrophotometer was used to measure the transmittance and reflectance(L*,a*,b*)of three brands(Lava,Upcera,Doceram)of zirconia ceramic materials of different colors and different thicknesses(0.9,0.6and 0.3 mm).The results were analyzed by SPSS18.0software to investigate the linearity of transmittance with thickness and color values of the materials.Results The transmittance was not significantly different among the three brands of zirconia ceramic materials(P0.05);the transmittance ranges of different thicknesses of zirconia ceramic(0.9,0.6and 0.3 mm)were 13.63%-27.47%,18.05%-33.96%,and 25.24%-39.73%,respectively,showing significant difference(P0.05).There was a linear relation of the transmittance with the thickness and color values of the three brands of zirconia ceramic materials:Upcera:TT=0.366×L*-thickness×0.661-0.280×b*;Doceram:TT=0.524×L*-0.536×thickness-0.237×b*;Lava:TT=0.210×L*-0.610×thickness-0.164×b*.Conclusion The transmittance ranges of the three brands of zirconia ceramic material are similar.The transmittance decreases with increase of its thickness and increases with luminance increase.Bluer zirconia ceramic has higher transmittance.Therefore,introduction of transmittance value for ceramic restoration process is important to redefine the natural tooth color perception and representation.
【Fund】: 国家自然科学基金(81271177)~~
【CateGory Index】: R783.1
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【Co-citations】
Chinese Journal Full-text Database 6 Hits
1 LI Dong-fang;WANG Xia-heng;LIU Xiao-li;Department of prosthodontics,The Affiliated Hospital of stomatology,Nanchang University;;Marginal and international gaps of In-ceram zirconia-based crowns[J];Journal of Dental Prevention and Treatment;2014-03
2 He Fan;Fu Yuanfei;Yu Weiqiang;Xu Kan;Department of Prosthodontics,Ninth People's Hospital,College of Stomatology,Shanghai Jiao Tong University School of Medicine,Shanghai Key Laboratory of Stomatology;;Retrospective analysis of 97 cases all ceramic restorations with CAD/CAM Zirconia coping[J];Chinese Journal of Dental Materials and Devices;2013-02
3 Guliz Aktas;Erdal Sahin;Pekka Vallittu;Mutlu zcan;Lippo Lassila;Department of Prosthodontics,Faculty of Dentistry,Hacettepe University;Department of Biomaterials Science and Turku Clinical Biomaterials Centre,University of Turku;Dental Materials Unit,Center for Dental and Oral Medicine,Clinic for Fixed and Removable Prosthodontics and Dental Materials Science,University of Zrich;;Effect of colouring green stage zirconia on the adhesion of veneering ceramics with different thermal expansion coefficients[J];国际口腔科学杂志(英文版);2013-04
4 SU Ya-li;HAN Jian-guo;WANG Shao-hai;School of Stomatolog,Xuzhou Medical College;;Transmittance Analyze of Enamel and Dentin.[J];Journal of Oral Science Research;2014-01
5 ZHANG Kai;WU Fengming;GUANG Hanbing;The Research Institute of Stomatology,Department of Prosthodontics,School of Stomatology,Najing Medical University;;The effect of polishing on the surface roughness and abrasion resistance of two kinds of ceramics materials[J];Stomatology;2014-01
6 REN Xiao-juan;MENG He;LI Jin-yuan;Hebei United University Stomatological Hospital;;The Study Progress of Interfacial Integrity of the Fixed Prosthetic[J];Medical Recapitulate;2014-22
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