Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images

Sakai, Takahiko; Li, Hefei; Abe, Tomohiro; Yamaguchi, Satoshi; Imazato, Satoshi

doi:https://doi.org/10.1016/j.dental.2020.10.030

Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images

Sakai, Takahiko; Li, Hefei; Abe, Tomohiro et al.

Dental Materials, 2021, 37(1), 168-174

アクセス数:46件（2025-04-22 06:37 集計）

固定URL: https://hdl.handle.net/11094/93086

閲覧可能ファイル

ファイル	フォーマット	利用条件	サイズ	閲覧回数	利用開始日	説明	information
DentMater_37_1_168	pdf	なし	312 KB	93	2023.11.09
Figures	pdf	なし	2.50 MB	22	2023.11.20

Creative Commons : 表示 - 非営利 - 改変禁止

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

タイトル	Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images
著者	著者名 Sakai, Takahiko
	著者名 Li, Hefei
	著者名 Abe, Tomohiro
	NRID 1000030397773 1000030397773 ORCID 0000-0002-4661-8821 0000-0002-4661-8821 researchmap permalink YamaguchiS_30397773 YamaguchiS_30397773 Scopus Author ID 7403873463 7403873463 著者名 Yamaguchi, Satoshi
	NRID 1000080243244 1000080243244 ORCID 0000-0003-3655-4809 0000-0003-3655-4809 researchmap permalink read0014210 read0014210 Scopus Author ID 55994423600 55994423600 著者名 Imazato, Satoshi
キーワード等	Filler shape
	Homogenization
	Localization
	Multi-scale analysis
	Nano-CT
	Resin composites
内容	Sakai T., Li H., Abe T., et al. Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images. Dental Materials 37, 168 (2021); https://doi.org/10.1016/j.dental.2020.10.030.
抄録	Objective: The aim of this study was to investigate the criteria for predicting the fracture initiation of resin composites (RCs) at the micro-scale and assess the influence of filler shapes on the flexural properties of RCs by combining nano-CT imaging and in silico multi-scale analysis. Methods: Experimental RCs composed of irregular-shaped (IS) silica filler (31.2 vol%/50.0 wt%) and Bis-GMA/TEGDMA were prepared. The RC specimens were scanned by a nano-CT with 500-nm resolution, and 10 micro-scale models (100 × 100 × 100 μm) were randomly extracted from a scanned region. In silico micro-scale models containing sphere-shaped (SS) fillers with the same volume content as the experimental RC were designed. Each RC model's elastic modulus and Poisson's ratio at the macro-scale were calculated using homogenization analysis. The flexural strength of the RC models were predicted by finite element analysis using the elastic moduli and Poisson's ratio values. Results: Significantly greater elastic modulus values were obtained in the X, Y, and Z directions for RC models containing IS fillers than SS fillers. Similarly, smaller Poisson's ratio values were observed in the Y and Z directions for RC model containing IS fillers than SS fillers (p < 0.05). The flexural strength of RC model containing IS fillers was significantly greater than the RC model containing SS fillers (p < 0.05). Significance: The in silico multi-scale analysis established in this study demonstrated that RC model containing irregular-shaped fillers had greater flexural strength than RC model loaded with SS fillers, suggesting that the mechanical strength of the RC can be improved by optimizing the shape of the silica fillers.
出版者	Elsevier Inc.
収録物名	Dental Materials
巻(号)	37(1)
ページ	168-174
刊行年月	2021-01-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/93086
PISSN	01095641
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1016/j.dental.2020.10.030
アクセス権	open access
権利情報	©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Dental Materials. 2021, 37(1), p. 168-174
DC.title	Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images
DC.creator	Sakai, Takahiko
	Li, Hefei
	Abe, Tomohiro
	Yamaguchi, Satoshi
	Imazato, Satoshi
DC.publisher	Elsevier Inc.
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-01-01
DC.identifier	https://doi.org/10.1016/j.dental.2020.10.030
DC.subject	Filler shape
	Homogenization
	Localization
	Multi-scale analysis
	Nano-CT
	Resin composites
DC.description	Sakai T., Li H., Abe T., et al. Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images. Dental Materials 37, 168 (2021); https://doi.org/10.1016/j.dental.2020.10.030.
DCTERMS.abstract	Objective: The aim of this study was to investigate the criteria for predicting the fracture initiation of resin composites (RCs) at the micro-scale and assess the influence of filler shapes on the flexural properties of RCs by combining nano-CT imaging and in silico multi-scale analysis. Methods: Experimental RCs composed of irregular-shaped (IS) silica filler (31.2 vol%/50.0 wt%) and Bis-GMA/TEGDMA were prepared. The RC specimens were scanned by a nano-CT with 500-nm resolution, and 10 micro-scale models (100 × 100 × 100 μm) were randomly extracted from a scanned region. In silico micro-scale models containing sphere-shaped (SS) fillers with the same volume content as the experimental RC were designed. Each RC model's elastic modulus and Poisson's ratio at the macro-scale were calculated using homogenization analysis. The flexural strength of the RC models were predicted by finite element analysis using the elastic moduli and Poisson's ratio values. Results: Significantly greater elastic modulus values were obtained in the X, Y, and Z directions for RC models containing IS fillers than SS fillers. Similarly, smaller Poisson's ratio values were observed in the Y and Z directions for RC model containing IS fillers than SS fillers (p < 0.05). The flexural strength of RC model containing IS fillers was significantly greater than the RC model containing SS fillers (p < 0.05). Significance: The in silico multi-scale analysis established in this study demonstrated that RC model containing irregular-shaped fillers had greater flexural strength than RC model loaded with SS fillers, suggesting that the mechanical strength of the RC can be improved by optimizing the shape of the silica fillers.
DC.rights	©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
DC.format	93086
citation_title	Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images
citation_author	Sakai, Takahiko
	Li, Hefei
	Abe, Tomohiro
	Yamaguchi, Satoshi
	Imazato, Satoshi
citation_publisher	Elsevier Inc.
citation_language	英語
citation_date	2021-01-01
citation_journal_title	Dental Materials
citation_volume	37
citation_issue	1
citation_firstpage	168
citation_lastpage	174
citation_doi	https://doi.org/10.1016/j.dental.2020.10.030
citation_public_url	https://hdl.handle.net/11094/93086

Multi-scale analysis of the influence of filler shapes on the mechanical performance of resin composites using high resolution nano-CT images

閲覧可能ファイル

論文情報

論文詳細を表示