Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns

Yamaguchi, Satoshi; Kani, Renshirou; Kawakami, Kazuma; Tsuji, Manami; Inoue, Sayuri; Lee, Chunwoo; Kiba, Wakako; Imazato, Satoshi

doi:https://doi.org/10.1016/j.dental.2018.07.002

Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns

Yamaguchi, Satoshi; Kani, Renshirou; Kawakami, Kazuma et al.

Dental Materials, 2018, 34(10), 1578-1584

アクセス数:63件（2025-04-22 12:05 集計）

固定URL: https://hdl.handle.net/11094/93082

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タイトル	Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns
著者	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 1000041000714 1000041000714 著者名 Kani, Renshirou
	著者名 Kawakami, Kazuma
	著者名 Tsuji, Manami
	著者名 Inoue, Sayuri
	著者名 Lee, Chunwoo
	著者名 Kiba, Wakako
	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	CAD/CAM resin composite
	CAD/CAM resin composite molar crown
	Fatigue resistance
	Step-stress accelerated life testing
	Three-dimensional finite element analysis
内容	Yamaguchi S., Kani R., Kawakami K., et al. Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns. Dental Materials 34, 1578 (2018); https://doi.org/10.1016/j.dental.2018.07.002.
抄録	Objective: The aim of this study was to evaluate long-term fatigue behavior using an in vitro step-stress accelerated life test (SSALT), and to determine the crack initiation point using in silico finite element analysis for computer-aided designed and manufactured (CAD/CAM) molar crowns fabricated from three commercial CAD/CAM resin composite blocks: Cerasmart (CS; GC, Tokyo, Japan), Katana Avencia Block (KA; Kuraray Noritake Dental, Niigata, Japan), and Shofu Block HC (HC; Shofu, Kyoto, Japan). Methods: Fifty-one mandibular first molar crowns luted on a resin core die were embedded in acrylic resin and covered with a polyvinyl chloride tube. Single compressive tests were performed for five crowns. SSALT was conducted for 36 crowns using three profiles and reliabilities at 120,000 cycles, and a Weibull analysis was conducted. The maximum principal strain of each CAD/CAM resin composite crown model was analyzed by three-dimensional finite element analysis. Results: Fracture loads of CS and KA (3784 ± 144 N and 3915 ± 313 N) were significantly greater than that of HC (2767 ± 227 N) (p < 0.05). Fracture probabilities at 120,000 cycles were 24.6% (CS), 13.7% (KA), and 14.0% (HC). Maximum principal strain was observed around the mesiolingual cusps of CS and KA and the distobuccal cusp of HC. Significance: CAD/CAM resin composite molar crowns containing nano-fillers with a higher fraction of resin matrix exhibited higher fracture loads and greater longevity, suggesting that these crowns could be used as an alternative to ceramic crowns in terms of fatigue behavior.
出版者	Elsevier Inc.
収録物名	Dental Materials
巻(号)	34(10)
ページ	1578-1584
刊行年月	2018-10-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/93082
PISSN	01095641
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1016/j.dental.2018.07.002
アクセス権	open access
権利情報	©2018. 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. 2018, 34(10), p. 1578-1584
DC.title	Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns
DC.creator	Yamaguchi, Satoshi
	Kani, Renshirou
	Kawakami, Kazuma
	Tsuji, Manami
	Inoue, Sayuri
	Lee, Chunwoo
	Kiba, Wakako
	Imazato, Satoshi
DC.publisher	Elsevier Inc.
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2018-10-01
DC.identifier	https://doi.org/10.1016/j.dental.2018.07.002
DC.subject	CAD/CAM resin composite
	CAD/CAM resin composite molar crown
	Fatigue resistance
	Step-stress accelerated life testing
	Three-dimensional finite element analysis
DC.description	Yamaguchi S., Kani R., Kawakami K., et al. Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns. Dental Materials 34, 1578 (2018); https://doi.org/10.1016/j.dental.2018.07.002.
DCTERMS.abstract	Objective: The aim of this study was to evaluate long-term fatigue behavior using an in vitro step-stress accelerated life test (SSALT), and to determine the crack initiation point using in silico finite element analysis for computer-aided designed and manufactured (CAD/CAM) molar crowns fabricated from three commercial CAD/CAM resin composite blocks: Cerasmart (CS; GC, Tokyo, Japan), Katana Avencia Block (KA; Kuraray Noritake Dental, Niigata, Japan), and Shofu Block HC (HC; Shofu, Kyoto, Japan). Methods: Fifty-one mandibular first molar crowns luted on a resin core die were embedded in acrylic resin and covered with a polyvinyl chloride tube. Single compressive tests were performed for five crowns. SSALT was conducted for 36 crowns using three profiles and reliabilities at 120,000 cycles, and a Weibull analysis was conducted. The maximum principal strain of each CAD/CAM resin composite crown model was analyzed by three-dimensional finite element analysis. Results: Fracture loads of CS and KA (3784 ± 144 N and 3915 ± 313 N) were significantly greater than that of HC (2767 ± 227 N) (p < 0.05). Fracture probabilities at 120,000 cycles were 24.6% (CS), 13.7% (KA), and 14.0% (HC). Maximum principal strain was observed around the mesiolingual cusps of CS and KA and the distobuccal cusp of HC. Significance: CAD/CAM resin composite molar crowns containing nano-fillers with a higher fraction of resin matrix exhibited higher fracture loads and greater longevity, suggesting that these crowns could be used as an alternative to ceramic crowns in terms of fatigue behavior.
DC.rights	©2018. 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	93082
citation_title	Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns
citation_author	Yamaguchi, Satoshi
	Kani, Renshirou
	Kawakami, Kazuma
	Tsuji, Manami
	Inoue, Sayuri
	Lee, Chunwoo
	Kiba, Wakako
	Imazato, Satoshi
citation_publisher	Elsevier Inc.
citation_language	英語
citation_date	2018-10-01
citation_journal_title	Dental Materials
citation_volume	34
citation_issue	10
citation_firstpage	1578
citation_lastpage	1584
citation_doi	https://doi.org/10.1016/j.dental.2018.07.002
citation_public_url	https://hdl.handle.net/11094/93082

Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns

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