Journal article
Light Transmission for a Novel Chairside CAD/CAM Lithium Disilicate Ceramic
The journal of contemporary dental practice, Vol.22(12), pp.1365-1369
12/01/2021
DOI: 10.5005/jp-journals-10024-3239
PMID: 35656672
Abstract
To evaluate light transmission in a novel chairside CAD/CAM lithium disilicate ceramic with different thicknesses and with and without polishing.
Sixty flat samples (10 specimens/group) were fabricated from novel chairside CAD/CAM lithium disilicate ceramic blocks (Amber Mill, Hass Bio) with different thicknesses and with and without polishing as follows: (1) 1.0 mm thickness without polishing (1.0NoP); (2) 1.0 mm thickness with polishing (1.0Po); (3) 1.5 mm thickness without polishing (1.5NoP); (4) 1.5 mm thickness with polishing (1.5Po); (5) 2.0 mm thickness without polishing (2.0NoP); and (6) 2.0 mm thickness with polishing (2.0Po). Specimens were polished with a polishing system for lithium disilicate restorations following the manufacturer's recommendations. Light transmission was evaluated with a curing radiometer. Obtained data were subjected to two-way ANOVA followed by Tukey's
tests (α = 0.05). SEM observations were conducted to evaluate surface microstructure.
The light intensity through the lithium disilicate blocks with and without polishing was 200.9 mW/cm
(16.1%) and 194.4 mW/cm
(15.6%) for 1.0 mm specimens, 119.3 mW/cm
(9.5%) and 111.9 mW/cm
(9.0%) for 1.5 mm specimens, and 102.3 mW/cm
(8.2%) and 96.0 mW/cm
(7.7%) for 2.0 mm specimens. SEM images showed a smoother surface with polishing compared to nonpolished specimens.
The thickness and polishing of the restorations were both significant influential factors in light transmission.
The range of light transmission percentage through the novel chairside CAD/CAM lithium disilicate blocks was 7.7-16.1%, suggesting that light attenuation through the material may influence the polymerization reaction of resin luting cement in the bonding process.
Details
- Title: Subtitle
- Light Transmission for a Novel Chairside CAD/CAM Lithium Disilicate Ceramic
- Creators
- Carlos A Jurado - Texas Tech University Health Sciences Center El Paso, School of Dental Medicine, El Paso, Texas, United States of AmericaClarisa Amarillas-Gastelum - Stony Brook UniversityAkimasa Tsujimoto - University of IowaSaad Alresayes - King Saud UniversityKennedee French - AT Still University-Missouri School of Dentistry and Oral Health, Kirksville, Missouri, United States of AmericaHamid Nurrohman
- Resource Type
- Journal article
- Publication Details
- The journal of contemporary dental practice, Vol.22(12), pp.1365-1369
- DOI
- 10.5005/jp-journals-10024-3239
- PMID
- 35656672
- ISSN
- 1526-3711
- Language
- English
- Date published
- 12/01/2021
- Academic Unit
- Prosthodontics; Operative Dentistry
- Record Identifier
- 9984267578002771
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