Mechanical and optical properties of monolithic CAD-CAM restorative materials

Şen, Nazmiye; Ölçer Us, Yeşim

Mechanical and optical properties of monolithic CAD-CAM restorative materials

dc.authorid	0000-0003-4917-4899
dc.contributor.author	Şen, Nazmiye
dc.contributor.author	Ölçer Us, Yeşim
dc.date.accessioned	2020-07-21T07:59:15Z
dc.date.available	2020-07-21T07:59:15Z
dc.date.issued	2018
dc.department	İstanbul Medipol Üniversitesi, Diş Hekimliği Fakültesi, Protetik Diş Tedavisi Ana Bilim Dalı
dc.description.abstract	Statement of problem: Achieving natural tooth appearance with sufficient mechanical strength is one of the most challenging issues of computer-assisted design and computer-assisted manufacturing (CAD-CAM) materials. However, limited evidence is available regarding their optical and mechanical properties for proper and evidence-based material selection in clinical practice.Purpose: The purpose of this in vitro study was to assess and compare the translucency and biaxial flexural strength of 5 monolithic CAD-CAM restorative materials.Material and methods: Disk-shaped specimens (n=30) of each material (Lava Ultimate [LU], Vita Enamic [VE], Vitablocs Mark II [VMII], Vita Suprinity [VS], and IPS e.max CAD [IPS]) with a diameter of 12 mm and a thickness of 1.2 ±0.05 mm were prepared. A spectrophotometer was used to measure the translucency parameter. The specimens were then subjected to a biaxial flexure test using 3 balls and loaded with a piston in a universal testing machine at a cross-head speed of 0.5 mm/min until failure occurred (International Organization for Standardization standard 6872). Weibull statistics were used to evaluate the characteristic strength and reliability of each material. Chemical compositions were analyzed using an energy dispersive spectrometer, and microstructural analysis was conducted using scanning electron microscopy. Data were analyzed using 1-way ANOVA and the Tukey honest significant difference test (?=.05).Results: Significant differences were found among the materials concerning translucency and biaxial flexural strength (P<.05). The highest mean transparency value was obtained in the VS group, whereas the lowest mean value was obtained in the VE group. The VS group produced the highest mean biaxial flexural strength, followed by the IPS, LU, VE, and VMII groups.Conclusions: Based on the results of the present study, zirconia-reinforced glass-ceramic revealed higher mean translucency and biaxial flexural strength than resin nanoceramic, feldspathic ceramic, lithium disilicate ceramic, and dual-network ceramic.
dc.identifier.citation	Şen, N. ve Ölçer Us, Y. (2018). Mechanical and optical properties of monolithic CAD-CAM restorative materials. Journal of Prosthetic Dentistry, 119(4), 593-599. https://dx.doi.org/10.1016/j.prosdent.2017.06.012
dc.identifier.doi	10.1016/j.prosdent.2017.06.012
dc.identifier.endpage	599
dc.identifier.issn	0022-3913
dc.identifier.issn	1097-6841
dc.identifier.issue	4
dc.identifier.scopusquality	Q1
dc.identifier.startpage	593
dc.identifier.uri	https://dx.doi.org/10.1016/j.prosdent.2017.06.012
dc.identifier.uri	https://hdl.handle.net/20.500.12511/5584
dc.identifier.volume	119
dc.identifier.wosquality	Q2
dc.indekslendigikaynak	Web of Science
dc.indekslendigikaynak	Scopus
dc.indekslendigikaynak	PubMed
dc.language.iso	en
dc.publisher	Elsevier Inc.
dc.relation.ispartof	Journal of Prosthetic Dentistry	en_US
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Monolithic CAD-CAM
dc.subject	Restorative Materials
dc.subject	Optical Properties
dc.title	Mechanical and optical properties of monolithic CAD-CAM restorative materials
dc.type	Article