Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

International Journal of Oral Science
Soram OhSun-Young Kim

Abstract

The purpose of this study was to assess the influence of the types and thicknesses of glass ceramic plates on light transmittance and compare the degrees of conversion (DC) of resin cement under the ceramic materials. Three ceramic plates with thicknesses of 0.5, 1.0, 2.0, and 4.0 mm were fabricated from each of five commercial ceramic blocks in shade A2: high-translucency and low-translucency IPS Empress CAD (Emp_HT and Emp_LT); high-translucency and low-translucency IPS e.max CAD (Emx_HT and Emx_LT); and Vita Mark II (Vita). The translucency parameter was obtained using a colorimeter. The light transmittance rate was measured using a photodetector attached to an optical power meter. The DC of a resin cement (Variolink N) underneath the ceramic plates was examined by Fourier transform infrared spectroscopy. The translucency parameter, light transmittance rate, and DC showed significant differences by ceramic type and thickness (P < 0.05). The Emp_HT specimens showed the highest light transmission and DCs, and the Emx_LT showed the least light transmission and the lowest DCs. The high-translucency Empress showed significantly higher DCs than the low-translucency types (P < 0.05), but there was no significant difference in e.max...Continue Reading

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Citations

Aug 1, 2019·Journal of Applied Oral Science : Revista FOB·Luana Menezes de MendonçaLuiz Fernando Pegoraro
Jan 18, 2021·European Journal of Oral Sciences·Fernanda Brombila BlumentrittNoéli Boscato
Nov 27, 2020·The Journal of Prosthetic Dentistry·Prapatsorn Chongkavinit, Chuchai Anunmana
Aug 27, 2021·Dentistry Journal·Hanan AldryhimAnuradha Prakki

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Methods Mentioned

BETA
infrared spectroscopy

Software Mentioned

SPSS

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