Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations

Sana W A R Algharaibeh; Hongbo Wan; Rami  Al-Fodeh; Anthony J Ireland; Dongsheng  Zhang; Bo Su

doi:10.1016/j.dental.2021.10.016

Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations

Sana W A R Algharaibeh^*, Hongbo Wan, Rami Al-Fodeh, Anthony J Ireland, Dongsheng Zhang, Bo Su^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

35 Citations (Scopus)

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Abstract

Objective
To fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer.

Method
Bi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer. The produced composites were subjected to mechanical testing, namely three-point bending, hardness and fracture toughness tests.

Results
Novel biomimetic ceramic/polymer composites (BCPCs) were fabricated with nacre-like brick and mortar anisotropic microstructure. The mechanical properties were dependent on the ceramic volume fraction. The 70 vol% BCPC had sufficient flexural strength (135.08–145.77 MPa), stiffness (57.75–61.22 GPa) and hardness (3.07–3.36 GPa) and showed remarkable fracture resistance with KIC value of (2.54 MPa m1/2).

Significant
Novel biomimetic ceramic/polymer composites show great potential as the next generation of CAD/CAM dental materials, as they closely resemble the combined mechanical properties of dentine and enamel.

Original language	English
Pages (from-to)	121-132
Number of pages	12
Journal	Dental Materials
Volume	38
Issue number	1
Early online date	24 Nov 2021
DOIs	https://doi.org/10.1016/j.dental.2021.10.016
Publication status	Published - Jan 2022

Bibliographical note

Funding Information:
The authors wish to thanks Jordan University of Science and Technology for financial support, Wolfson Bioimaging Facility and the Elizabeth Blackwell Institution, through its Wellcome Trust ISSF Award.

Publisher Copyright:
© 2021 The Academy of Dental Materials

Keywords

Biomimetic
Nacre-like
Brick and mortar microstructure
Composite
Ceramic
Polymer
Dental materials
Flexural strength
Fracture toughness
CAD/CAM

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10.1016/j.dental.2021.10.016

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Accepted author manuscript, 956 KBLicence: CC BY-NC-ND

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@article{01b2f849fe3f4c93996da40890334276,

title = "Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations",

abstract = "Objective To fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer. Method Bi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer. The produced composites were subjected to mechanical testing, namely three-point bending, hardness and fracture toughness tests. Results Novel biomimetic ceramic/polymer composites (BCPCs) were fabricated with nacre-like brick and mortar anisotropic microstructure. The mechanical properties were dependent on the ceramic volume fraction. The 70 vol\% BCPC had sufficient flexural strength (135.08–145.77 MPa), stiffness (57.75–61.22 GPa) and hardness (3.07–3.36 GPa) and showed remarkable fracture resistance with KIC value of (2.54 MPa m1/2). Significant Novel biomimetic ceramic/polymer composites show great potential as the next generation of CAD/CAM dental materials, as they closely resemble the combined mechanical properties of dentine and enamel. ",

keywords = "Biomimetic, Nacre-like, Brick and mortar microstructure, Composite, Ceramic, Polymer, Dental materials, Flexural strength, Fracture toughness, CAD/CAM",

author = "Algharaibeh, \{Sana W A R\} and Hongbo Wan and Rami Al-Fodeh and Ireland, \{Anthony J\} and Dongsheng Zhang and Bo Su",

note = "Funding Information: The authors wish to thanks Jordan University of Science and Technology for financial support, Wolfson Bioimaging Facility and the Elizabeth Blackwell Institution, through its Wellcome Trust ISSF Award. Publisher Copyright: {\textcopyright} 2021 The Academy of Dental Materials",

year = "2022",

month = jan,

doi = "10.1016/j.dental.2021.10.016",

language = "English",

volume = "38",

pages = "121--132",

journal = "Dental Materials",

issn = "0109-5641",

publisher = "Elsevier Inc.",

number = "1",

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TY - JOUR

T1 - Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations

AU - Algharaibeh, Sana W A R

AU - Wan, Hongbo

AU - Al-Fodeh, Rami

AU - Ireland, Anthony J

AU - Zhang, Dongsheng

AU - Su, Bo

N1 - Funding Information: The authors wish to thanks Jordan University of Science and Technology for financial support, Wolfson Bioimaging Facility and the Elizabeth Blackwell Institution, through its Wellcome Trust ISSF Award. Publisher Copyright: © 2021 The Academy of Dental Materials

PY - 2022/1

Y1 - 2022/1

N2 - Objective To fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer. Method Bi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer. The produced composites were subjected to mechanical testing, namely three-point bending, hardness and fracture toughness tests. Results Novel biomimetic ceramic/polymer composites (BCPCs) were fabricated with nacre-like brick and mortar anisotropic microstructure. The mechanical properties were dependent on the ceramic volume fraction. The 70 vol% BCPC had sufficient flexural strength (135.08–145.77 MPa), stiffness (57.75–61.22 GPa) and hardness (3.07–3.36 GPa) and showed remarkable fracture resistance with KIC value of (2.54 MPa m1/2). Significant Novel biomimetic ceramic/polymer composites show great potential as the next generation of CAD/CAM dental materials, as they closely resemble the combined mechanical properties of dentine and enamel.

AB - Objective To fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer. Method Bi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer. The produced composites were subjected to mechanical testing, namely three-point bending, hardness and fracture toughness tests. Results Novel biomimetic ceramic/polymer composites (BCPCs) were fabricated with nacre-like brick and mortar anisotropic microstructure. The mechanical properties were dependent on the ceramic volume fraction. The 70 vol% BCPC had sufficient flexural strength (135.08–145.77 MPa), stiffness (57.75–61.22 GPa) and hardness (3.07–3.36 GPa) and showed remarkable fracture resistance with KIC value of (2.54 MPa m1/2). Significant Novel biomimetic ceramic/polymer composites show great potential as the next generation of CAD/CAM dental materials, as they closely resemble the combined mechanical properties of dentine and enamel.

KW - Biomimetic

KW - Nacre-like

KW - Brick and mortar microstructure

KW - Composite

KW - Ceramic

KW - Polymer

KW - Dental materials

KW - Flexural strength

KW - Fracture toughness

KW - CAD/CAM

U2 - 10.1016/j.dental.2021.10.016

DO - 10.1016/j.dental.2021.10.016

M3 - Article (Academic Journal)

C2 - 34836698

SN - 0109-5641

VL - 38

SP - 121

EP - 132

JO - Dental Materials

JF - Dental Materials

IS - 1

ER -

Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations

Abstract

Bibliographical note

Keywords

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