Effect of indirect restorative material and thickness on light transmission at different wavelengths

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dc.creatorRafael Rocha Pacheco
dc.creatorAdriana Oliveira Carvalho
dc.creatorCarolina Bosso André
dc.creatorAna Paula Almeida Ayres
dc.creatorRenata Bacelar Castanhede de Sá
dc.creatorTiago Monteiro Dias
dc.creatorFrederick Rueggeberg
dc.creatorMarcelo Giannini
dc.date.accessioned2022-09-24T16:31:29Z
dc.date.accessioned2025-09-09T00:47:23Z
dc.date.available2022-09-24T16:31:29Z
dc.date.issued2019-04
dc.format.mimetypepdf
dc.identifier.doi10.1016/j.jpor.2018.12.004
dc.identifier.issn18831958
dc.identifier.urihttps://hdl.handle.net/1843/45434
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Prosthodontic Research
dc.rightsAcesso Restrito
dc.subjectCeramics
dc.subjectComposite resins
dc.subject.otherCeramics
dc.subject.otherComposite
dc.subject.otherIrradiance
dc.subject.otherPhotopolymerization
dc.subject.otherZirconia
dc.titleEffect of indirect restorative material and thickness on light transmission at different wavelengths
dc.typeArtigo de periódico
local.citation.epage238
local.citation.issue2
local.citation.spage232
local.citation.volume63
local.description.resumoPurpose: The aim of this study was to evaluate the influence of indirect restorative material type and thickness on the transmission of different wavelengths from a broad-banded dental curing light. Methods: Four dental indirect restorative materials for computer-aided design and computer-aided manufacturing (CAD/CAM) were evaluated: [RC] resin/ceramic hybrid material (Lava Ultimate), [FC] feldspathic ceramic (VitaBlocs), and two zirconia-based ceramics ([ZK] Katana; and [ZL] Lava). Total loss of irradiance (TL) was measured for blue (WB, 425-490nm) and violet (WV, 350-425nm) wavelengths. Specimens of 15×15mm with varying thicknesses (0.5, 1.0, 1.5, and 2.0mm) were fabricated (n=5). A plasma-arc dental light-curing unit was used (Arc Light-II). To assess TL as a function of wavelength, a software (Spectra Suite v5.1) connected to a spectroradiometer (USB2000) and an integrating sphere (CTSM-LSM-60-SF) was used. Data was subjected to statistical analysis (two-way ANOVA and post-hoc Tukey test, α=0.05). Results: A 0.5mm interposition resulted in TL from 50.5 to 67.2%, depending on material. Increased thickness resulted in higher TL for all materials. FC showed less TL compared to ZK. In general, WV showed higher TL than did WB, and WV/WB proportion decreased with increasing thickness. Conclusions: Indirect materials significantly reduced TL, and this effect is greater with increasing thickness. WV showed lower penetration compared to WB
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/abs/pii/S1883195818304882?via%3Dihub

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