On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing

B. Henriques; P. Pinto; F. S. Silva; M. C. Fredel; D. Fabris; J. C.M. Souza; O. Carvalho

doi:10.1016/j.compositesb.2017.12.044

On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing

B. Henriques^*, P. Pinto, F. S. Silva, M. C. Fredel, D. Fabris, J. C.M. Souza, O. Carvalho

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The purpose of this study was to evaluate the mechanical properties of laser printed monolithic and laminated nano ceramic resins (NCR) for dental prosthetic applications. Three different types of discs were produced by laser printing: monolithic NCR discs and laminated NCR discs with 100 μm (laminate_100) and 500 μm (laminate_500) resin interlayers (n = 10). To assess the adhesion strength of the photosensitive resin used as interlayer to the NCR, cylindrical specimens were produced. The biaxial flexural strength and shear bond strength of the specimens were measured using a universal testing machine. Data was statistically analyzed by one-way ANOVA followed by Tukey HSD test (α = 0.05). The microstructure and fracture surfaces were analyzed by SEM/EDS. Results were rationalized with finite element analysis (FEA). Laminate_100 specimens showed significantly higher flexural strength (∼50%) than monolithic and Laminate_500 specimens (p <.05). A good adhesion between the resin used as interlayer and the NCR was registered. FEA revealed a more favorable stress distribution in laminates with a thinner interlayer. Modern CAD/CAM systems can be used in the direct manufacturing of correctly designed laminated structures displaying enhanced strength and damage tolerance relative to conventional monolithic ones, thereby positively impacting their clinical performance.

Original language	English
Pages (from-to)	76-83
Number of pages	8
Journal	Composites Part B: Engineering
Volume	141
DOIs	https://doi.org/10.1016/j.compositesb.2017.12.044
Publication status	Published - 15 May 2018
Externally published	Yes

Keywords

Direct manufacturing
Flexural strength
Laminated structures
Laser printing
Nano-ceramic resin

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.compositesb.2017.12.044

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title = "On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing",

abstract = "The purpose of this study was to evaluate the mechanical properties of laser printed monolithic and laminated nano ceramic resins (NCR) for dental prosthetic applications. Three different types of discs were produced by laser printing: monolithic NCR discs and laminated NCR discs with 100 μm (laminate_100) and 500 μm (laminate_500) resin interlayers (n = 10). To assess the adhesion strength of the photosensitive resin used as interlayer to the NCR, cylindrical specimens were produced. The biaxial flexural strength and shear bond strength of the specimens were measured using a universal testing machine. Data was statistically analyzed by one-way ANOVA followed by Tukey HSD test (α = 0.05). The microstructure and fracture surfaces were analyzed by SEM/EDS. Results were rationalized with finite element analysis (FEA). Laminate_100 specimens showed significantly higher flexural strength (∼50%) than monolithic and Laminate_500 specimens (p <.05). A good adhesion between the resin used as interlayer and the NCR was registered. FEA revealed a more favorable stress distribution in laminates with a thinner interlayer. Modern CAD/CAM systems can be used in the direct manufacturing of correctly designed laminated structures displaying enhanced strength and damage tolerance relative to conventional monolithic ones, thereby positively impacting their clinical performance.",

keywords = "Direct manufacturing, Flexural strength, Laminated structures, Laser printing, Nano-ceramic resin",

author = "B. Henriques and P. Pinto and Silva, {F. S.} and Fredel, {M. C.} and D. Fabris and Souza, {J. C.M.} and O. Carvalho",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.compositesb.2017.12.044",

language = "English",

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T1 - On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing

AU - Henriques, B.

AU - Pinto, P.

AU - Silva, F. S.

AU - Fredel, M. C.

AU - Fabris, D.

AU - Souza, J. C.M.

AU - Carvalho, O.

PY - 2018/5/15

Y1 - 2018/5/15

N2 - The purpose of this study was to evaluate the mechanical properties of laser printed monolithic and laminated nano ceramic resins (NCR) for dental prosthetic applications. Three different types of discs were produced by laser printing: monolithic NCR discs and laminated NCR discs with 100 μm (laminate_100) and 500 μm (laminate_500) resin interlayers (n = 10). To assess the adhesion strength of the photosensitive resin used as interlayer to the NCR, cylindrical specimens were produced. The biaxial flexural strength and shear bond strength of the specimens were measured using a universal testing machine. Data was statistically analyzed by one-way ANOVA followed by Tukey HSD test (α = 0.05). The microstructure and fracture surfaces were analyzed by SEM/EDS. Results were rationalized with finite element analysis (FEA). Laminate_100 specimens showed significantly higher flexural strength (∼50%) than monolithic and Laminate_500 specimens (p <.05). A good adhesion between the resin used as interlayer and the NCR was registered. FEA revealed a more favorable stress distribution in laminates with a thinner interlayer. Modern CAD/CAM systems can be used in the direct manufacturing of correctly designed laminated structures displaying enhanced strength and damage tolerance relative to conventional monolithic ones, thereby positively impacting their clinical performance.

AB - The purpose of this study was to evaluate the mechanical properties of laser printed monolithic and laminated nano ceramic resins (NCR) for dental prosthetic applications. Three different types of discs were produced by laser printing: monolithic NCR discs and laminated NCR discs with 100 μm (laminate_100) and 500 μm (laminate_500) resin interlayers (n = 10). To assess the adhesion strength of the photosensitive resin used as interlayer to the NCR, cylindrical specimens were produced. The biaxial flexural strength and shear bond strength of the specimens were measured using a universal testing machine. Data was statistically analyzed by one-way ANOVA followed by Tukey HSD test (α = 0.05). The microstructure and fracture surfaces were analyzed by SEM/EDS. Results were rationalized with finite element analysis (FEA). Laminate_100 specimens showed significantly higher flexural strength (∼50%) than monolithic and Laminate_500 specimens (p <.05). A good adhesion between the resin used as interlayer and the NCR was registered. FEA revealed a more favorable stress distribution in laminates with a thinner interlayer. Modern CAD/CAM systems can be used in the direct manufacturing of correctly designed laminated structures displaying enhanced strength and damage tolerance relative to conventional monolithic ones, thereby positively impacting their clinical performance.

KW - Direct manufacturing

KW - Flexural strength

KW - Laminated structures

KW - Laser printing

KW - Nano-ceramic resin

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JO - Composites Part B: Engineering

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ER -

On the mechanical properties of monolithic and laminated nano-ceramic resin structures obtained by laser printing

Abstract

Keywords

UN SDGs

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