J Korean Acad Conserv Dent.  2011 Jan;36(1):37-49. 10.5395/JKACD.2011.36.1.37.

The evaluation of color and color difference according to the layering placement of Incisal shade composites on the body composites of the indirect resin restoration

• Park SJ
• Lee HY
• Nah MY
• Chang HS
• Hwang YC
• Oh WM
• Hwang IN

• KMID: 1446082
• DOI: http://doi.org/10.5395/JKACD.2011.36.1.37

Abstract

OBJECTIVES
The aim of this study was to evaluate the surface color of indirect resin restoration according to the layering placement of different shade of incisal composite.
MATERIALS AND METHODS
In this study, CIE L*a*b* value of 16 Body composite of Tescera ATL (Bisco, Schaumburg IL,USA) was measured by spectrophotometer (NF999, Nippon Denshuku, Japan), and compared to CIE L*a*b* value of Vitapan shade guide. Nine shade Incisal composite of Tescera ATL were build-up to 1 mm thickness on Body composites inlay block, and CIE L*a*b* value was measured. Incisal composite was ground to 0.5 mm thickness and CIE L*a*b* value was re-measured. Color difference between Body composite and Incisal composites layered on Body composite was calculated as a function of thickness.
RESULTS
Color difference between corresponding shade of Tescera Body composite and Vitapan shade guide was from 6.88 to 12.80. L* and b*value was decreased as layering thickness of Incisal composite on Body composite was increased. But, a* value did not show specific change tendency.
CONCLUSIONS
Surface color difference between Body composites and Incisal composites layered on Body composite was increased as the layering thickness of Incisal composite increased (p < 0.05).

Keyword

CIE L*a*b* value; Color; Color difference; Incisal shade; Indirect resin restoration; Layering; Tescera ATL

MeSH Terms

Composite Resins
Inlays
Composite Resins

Reference

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