Document Detail

Effect of layering feldspathic porcelain on resulting veneer color with aluminum oxide core.
MedLine Citation:
PMID:  12419146     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate the resulting color of veneers affected by adding a layer of veneering porcelain on Procera aluminium oxide core. METHODS: Fifteen aluminium oxide disks were randomized into three groups. Each of five disks was veneered with porcelain of the Vita shade Al, A2 and B4 respectively. The color of the substrate covered with non-veneered disks and the veneered disks was measured separately and the color differences were calculated. RESULTS: Statistically significant differences (P < 0.01) in color coordinates of dark substrate were recorded between the substrate covered by an aluminium oxide disks and the addition of veneering porcelain to aluminium oxide disks. Mean coordinates color difference (DeltaE, DeltaL *, Deltaa *, Deltab *) after adding the three shades of veneering porcelain showed increase from Al (2.311) to A2 (4.313) to B4 (8.778) in DeltaE, decrease from Al (-1.530) to A2 (-3.369) and B4 (-3.358) in DeltaL *, and increase from Al (-1.440) to A2 (2.198) to B4 (7.955) in Deltab *. The direction of the color modification correlated with values obtained from the liberation. The resulting color was also affected by the color of the underlying structure. CONCLUSION: This study illustrates that color of aluminium oxide shell could be modified with feldspathic veneering porcelain, which may be used by practitioners to alter the esthetic outcome of porcelain veneers.
Feimin Zhang; Yunfeng Zhao; Michael E Razzoog
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology     Volume:  37     ISSN:  1002-0098     ISO Abbreviation:  Zhonghua Kou Qiang Yi Xue Za Zhi     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-11-06     Completed Date:  2002-12-04     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8711066     Medline TA:  Zhonghua Kou Qiang Yi Xue Za Zhi     Country:  China    
Other Details:
Languages:  eng     Pagination:  206-9     Citation Subset:  D; IM    
Department of Prosthodontics, Hospital for Stomatology, Nanjing Medical University, Nanjing 210029, China.
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MeSH Terms
Aluminum Oxide / chemistry*
Color / standards
Dental Porcelain / chemistry*
Dental Veneers* / standards
Prosthesis Coloring / methods
Technology, Dental / methods
Reg. No./Substance:
12001-21-7/Dental Porcelain; 1344-28-1/Aluminum Oxide

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