Wear of Polymer-Infiltrated Ceramic Network Materials against Enamel

Polymer-infiltrated ceramic network materials (PICNs) have high mechanical compatibility with human enamel. However, the wear properties of PICN against natural human enamel have not yet been clarified. We investigated the in vitro two-body wear behaviors of PICNs and an enamel antagonist. Two PICNs...

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Veröffentlicht in:Materials 2022-03, Vol.15 (7), p.2435
Hauptverfasser: Tokunaga, Jumpei, Ikeda, Hiroshi, Nagamatsu, Yuki, Awano, Shuji, Shimizu, Hiroshi
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container_issue 7
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creator Tokunaga, Jumpei
Ikeda, Hiroshi
Nagamatsu, Yuki
Awano, Shuji
Shimizu, Hiroshi
description Polymer-infiltrated ceramic network materials (PICNs) have high mechanical compatibility with human enamel. However, the wear properties of PICN against natural human enamel have not yet been clarified. We investigated the in vitro two-body wear behaviors of PICNs and an enamel antagonist. Two PICNs were used: Experimental PICN (EXP) prepared via the infiltration of methacrylate-based resin into the porous silica ceramic network and commercial Vita Enamic (ENA). Two commercial dental ceramics, lithium disilicate glass (LDS) and zirconia (ZIR), were also characterized, and their wear performance was compared to PICNs. The samples were subjected to Vickers hardness tests and two-body wear tests that involve the samples being cyclically impacted by enamel antagonists underwater at 37 °C. The results reveal that the Vickers hardness of EXP (301 ± 36) was closest to that of enamel (317 ± 17). The volumetric wear losses of EXP and ENA were similar to those of LDS but higher than that of zirconia. The volumetric wear loss of the enamel antagonist impacted against EXP was moderate among the examined samples. These results suggest that EXP has wear behavior similar to that of enamel. Therefore, PICNs are mechanically comparable to enamel in terms of hardness and wear and are excellent tooth-restoration materials.
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However, the wear properties of PICN against natural human enamel have not yet been clarified. We investigated the in vitro two-body wear behaviors of PICNs and an enamel antagonist. Two PICNs were used: Experimental PICN (EXP) prepared via the infiltration of methacrylate-based resin into the porous silica ceramic network and commercial Vita Enamic (ENA). Two commercial dental ceramics, lithium disilicate glass (LDS) and zirconia (ZIR), were also characterized, and their wear performance was compared to PICNs. The samples were subjected to Vickers hardness tests and two-body wear tests that involve the samples being cyclically impacted by enamel antagonists underwater at 37 °C. The results reveal that the Vickers hardness of EXP (301 ± 36) was closest to that of enamel (317 ± 17). The volumetric wear losses of EXP and ENA were similar to those of LDS but higher than that of zirconia. The volumetric wear loss of the enamel antagonist impacted against EXP was moderate among the examined samples. These results suggest that EXP has wear behavior similar to that of enamel. Therefore, PICNs are mechanically comparable to enamel in terms of hardness and wear and are excellent tooth-restoration materials.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma15072435</identifier><identifier>PMID: 35407767</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Behavior ; Ceramics ; Clinical medicine ; Composite materials ; Dental materials ; Dental restorative materials ; Diamond pyramid hardness tests ; Enamel ; Lithium ; Mechanical properties ; Microstructure ; Polymers ; Teeth ; Wear tests ; Zirconium dioxide</subject><ispartof>Materials, 2022-03, Vol.15 (7), p.2435</ispartof><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. 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subjects Behavior
Ceramics
Clinical medicine
Composite materials
Dental materials
Dental restorative materials
Diamond pyramid hardness tests
Enamel
Lithium
Mechanical properties
Microstructure
Polymers
Teeth
Wear tests
Zirconium dioxide
title Wear of Polymer-Infiltrated Ceramic Network Materials against Enamel
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