8 March 2007 Colorimetric evaluation of composite materials with different thickness by reflectance spectroscopy
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Proceedings Volume 6425, Lasers in Dentistry XIII; 64250Z (2007) https://doi.org/10.1117/12.700992
Event: SPIE BiOS, 2007, San Jose, California, United States
Selection of the proper shade and color matching of restorations to natural dentition continues to be one of the most frustrating problems in dentistry and currently available shade guide presents a limited selection of colors compared to those found in natural dentition. This investigation evaluation if the composites resins shade B2 are equivalent to the Vita shade guide B2. Twelve composite resins (Renamel Microfill Super Brite- Cosmedent USA, Renamel Universal Brite- Cosmedent USA, Renamel Microfill Body- Cosmedent USA, Renamel Universal Body- Cosmedent USA, Opallis EB2-FGM, Opallis DB2-FGM, Filtek Supreme XT-3M/ESPE, Filtek Z250-3M/ESPE, Filtek Z350-3M/ESPE, Z100-3M/ESPE, 4 Seasons Dentin-Ivoclar/Vivadent, Tetric Ceram-Ivoclar/Vivadent) shade B2 were used. From each composite, two specimens were made in a steel matrix with 8.0 mm diameter and 10.0 mm different predetermined thickness (0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 mm). The specimens were 40 seconds light polymerized by LED Ultrablue (DMC). The specimens were measured 10 times each to determine the shade using a reflectance spectrophotometer (Pocket Spec). According to results was verified that not any of composites resins shade B2 evaluated in this study presented values of color difference (ΔE) equivalent to the Vita shade guide B2 and the 2 mm thickness showed the closer match to the Vita shade guide B2.
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Priscila Paiva Portero, Priscila Paiva Portero, Fernando Florez, Fernando Florez, Vanderlei Bagnato, Vanderlei Bagnato, Osmir Batista de Oliveira, Osmir Batista de Oliveira, Leonor de Castro Monteiro Loffredo, Leonor de Castro Monteiro Loffredo, "Colorimetric evaluation of composite materials with different thickness by reflectance spectroscopy", Proc. SPIE 6425, Lasers in Dentistry XIII, 64250Z (8 March 2007); doi: 10.1117/12.700992; https://doi.org/10.1117/12.700992

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