ArticleJournal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]2026
Wavelength-Dependent Transmitted Irradiance Through Lithium Disilicate Ceramics.
Article in Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.], 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveNovel photoinitiator systems responsive to longer wavelengths are being developed to overcome limitations of conventional camphorquinone-based resin cements. This study evaluated transmitted irradiance of short-wavelength (blue) and long-wavelength (red) light through lithium disilicate ceramics of varying translucencies, shades, and thicknesses to determine whether longer wavelengths provide enhanced light delivery under standardized conditions MATERIALS AND
methodsLithium disilicate CAD/CAM blocks (IPS e.max CAD, Ivoclar Vivadent) with three translucency levels (HT, MT, LT) and three shades (A1, A2, A3) were sectioned into six thicknesses (0.5-3.0 mm) and crystallized (n = 3). Precalibrated experimental LEDs emitting blue or red wavelengths were standardized to 1000 mW/cm
resultsAll factors significantly influenced irradiance (p < 0.001). Ceramic thickness exerted greatest influence (F = 8270.89), followed by light source (F = 7827.34), translucency (F = 2001.89), and shade (F = 55.02). Red light demonstrated significantly higher transmitted irradiance than blue light across all conditions.
conclusionsWavelength significantly affected transmitted irradiance, with red light penetrating more effectively than blue light.
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