The effects of experimental etchant with calcium phosphate ion clusters on the nanoleakage at dentin-resin hybrid layer

This study aimed to investigate the possibility that a calcium phosphate ion cluster (CPIC)-incorporating phosphoric acid (PA) solution promotes the remineralization of the hybrid layer and prevents nanoleakage from the dentin-resin interface, thereby minimizing dentin-resin bond failure during long...

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Published in:Journal of adhesion science and technology 2023-06, Vol.37 (11), p.1756-1769
Main Authors: Lee, Yeon Joo, Kang, Sun-Woo, Yoo, Kyung-Hyeon, Yoon, Seog-Young, Kim, Hyeryeong, Kim, Yong-Il
Format: Article
Language:English
Subjects:
adhesive
Bonding strength
Calcium phosphates
Dentin
Etchants
Fourier transforms
Infrared analysis
Phosphoric acid
resin
Resins
Thermal cycling
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Summary:This study aimed to investigate the possibility that a calcium phosphate ion cluster (CPIC)-incorporating phosphoric acid (PA) solution promotes the remineralization of the hybrid layer and prevents nanoleakage from the dentin-resin interface, thereby minimizing dentin-resin bond failure during long-term bonding periods. The specimens were prepared using human molars and treated with three types of etching solutions (35% PA, and CPIC-incorporated PA solutions at 1:1 and 1:2 ratios). The microtensile bond strength (µTBS) of half of the specimens was measured after 24 h, and measured after thermocycling for the other half. Fourier-transform infrared spectroscopy (FTIR) was performed to chemically analyze the remineralization, and the degree of nanoleakage in each sample was observed using a scanning electron microscope (SEM). The CPIC-incorporated PA-II solution decreased the nanoleakage in the hybrid layer without reducing the µTBS, with or without thermocycling, and promoted remineralization of dentin collagen.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2022.2093567