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Effect of Attenuated Light Through Translucent Zirconia on the Interfacial Adaptation and Polymerization of Resin Cements

Authors
 Seung-Hoon Han  ;  Yasushi Shimada  ;  Alireza Sadr  ;  Tomoko Tabata  ;  Hisaichi Nakagawa  ;  Takaaki Sato  ;  Ji-Eun Byun  ;  Sung-Ho Park 
Citation
 JOURNAL OF ADHESIVE DENTISTRY, Vol.25(1) : 219-230, 2023-08 
Journal Title
JOURNAL OF ADHESIVE DENTISTRY
ISSN
 1461-5185 
Issue Date
2023-08
MeSH
Dental Cements* ; Glass Ionomer Cements ; Polymerization ; Resin Cements*
Keywords
exposure reciprocity ; interfacial adaptation ; polymerization shrinkage strain ; radiant exposure window ; resin cement ; translucent zirconia
Abstract
Purpose: The first objective was to determine if dual-curing of resin cement with reduced light could affect interfacial adaptations of zirconia restoration. The second objective was to examine whether cement type and pretreatment method of universal adhesive affected interfacial adaptation. The final objective was to compare the polymerization degree of cement under different reduced-light conditions.Materials and Methods: Inlay cavities were prepared on extracted third molars. Translucent zirconia restorations were milled using Katana UTML (Kura ray Noritake) in three groups with restoration thicknesses of 1, 2, and 3 mm, respectively. Each group had three subgroups using different cementation methods. For subgroup 1, restorations were cemented with self-adhesive cement. For subgroup 2, universal adhesive was applied and light cured. After the restoration was seated with conventional resin cement, light curing was performed. For subgroup 3, after adhesive was applied, the restoration was seated with conventional resin cement. Light curing was performed for the adhesive and cement simultaneously. After thermocycling, interfacial adaptation at the restoration-tooth interface was investigated using swept-source optical coherence tomography imaging. Finally, polymerization shrinkage of the cement was measured using a linometer and compared under the conditions of different zirconia thicknesses and light-curing durations.Results: Interfacial adaptation varied signficantly depending on the zirconia thickness, pretreatment, polymerization mode and cements used (p < 0.05). The effects of the adhesive and polymerization shrinkage differed signficantly, depending on the reduced light under the zirconia (p < 0.05).Conclusion: Lower curing-light irradiance may lead to inferior adaptation and lower polymerization of the cement. Polymerization of resin cement can differ depending on the light irradiance and exposure duration.
Full Text
https://www.quintessence-publishing.com/deu/en/article/4586857
DOI
10.3290/j.jad.b4586857
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Park, Sung Ho(박성호) ORCID logo https://orcid.org/0000-0003-2171-235X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/197903
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