Influence of different surface treatments on color of chairside porcelain veneer made of CEREC Blocs

doi:10.3969/j.issn.2095-4344.2017.06.012

Abstract

Abstract:

BACKGROUND: It is convenient to fabricate porcelain veeners using chairside computer aided design/computer aided manufacture (CAD/CAM) system. However, the color of the restorations is not ideal when the veener is cemented immediately, so different surface treatments are needed.
OBJECTIVE: To investigate the influence of different surface treatments on the color of chairside porcelain veneers made of CEREC Blocs and the color match between the porcelain veneers and teeth.
METHODS: Five fresh extracted maxillary central incisors were selected and prepared. Twenty-five 0.6 mm porcelain veneer specimens were fabricated with Sirona CEREC Blocs by chairside CAD/CAM system, and then randomized into five groups. Untreated specimens served as control group. The other four groups were treated respectively by polishing, glazing, glazing after polishing or staining. The color parameters of specimens and the teeth were measured with ShadeEye NCC on the middle 1/3 region of labial surfaces, and color differences (ΔE) between the specimens and teeth were calculated. Data were analyzed by SPSS 19.0 software.
RESULTS AND CONCLUSION: Compared with the control group, the L* value of the glazing, glazing after polishing and staining groups were significantly decreased (P < 0.05). The L* value of the staining group was the lowest. The a* and b* values had no significant differences between groups (P > 0.05). Compared with the control group, the ?E values of glazing, glazing after polishing and staining groups were significantly decreased (P < 0.05), and the ?E value of the staining group was the lowest. The ?L* values of glazing, glazing after polishing and staining groups were significantly lower than those of the control group (P < 0.05), and the ?L* value of the staining group was the lowest. Compared with the control group, only the ?b* value of staining group was decreased significantly (P < 0.05). The ?a* values did not differ significantly between groups (P > 0.05). These results suggest that the chairside porcelain veneers made of CEREC Blocs can obtain satisfactory aesthetic appearance by glazing and staining.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Dental Porcelain, Computer-Aided Design, Colorimetry, Tissue Engineering

CLC Number:

R318

Sun Jia-qi, Gu Wei-ping, Chen Zhi-fei, Li Lin. Influence of different surface treatments on color of chairside porcelain veneer made of CEREC Blocs[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(6): 888-892.

Figures/Tables 2

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