Bonding of contemporary glass ionomer cements to dentin

H. K. Yip; F. R. Tay; H. C. Ngo; R. J. Smales; D. H. Pashley

doi:10.1016/S0109-5641(01)00007-0

Bonding of contemporary glass ionomer cements to dentin

H. K. Yip, F. R. Tay, H. C. Ngo, R. J. Smales, D. H. Pashley

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

88 Scopus citations

Abstract

Objective: The objective of this study was to investigate the microtensile bond strength (μTBS) of contemporary glass ionomer cements (GIC) to sound coronal dentin. Methods: Three specimen teeth were prepared for each material tested: Fuji IX GP (GC), ChemFlex (Dentsply) and Ketac-Molar Aplicap (ESPE). GIC buildups were made according to the manufacturers' instructions. After being stored at 37°C, 100% humidity for 24 h, the teeth were vertically sectioned into 1 × 1 mm beams for μTBS evaluation. Representative fractured beams were prepared for scanning (SEM) and transmission electron microscopic (TEM) examination. Results: Results of the μTBS test were: Fuji IX GP (12.4 ± 8.6 MPa), ChemFlex (15.0 ± 9.3 MPa) and Ketac-Molar Aplicap (11.4 ± 7.7 MPa). One-way ANOVA and a multiple comparison test showed that ChemFlex had a statistically higher μTBS (p < 0.05). SEM fractographic analysis showed that the predominant failure modes were interfacial and mixed failures. The GIC side of the fractured beams revealed dehydration cracks, a high level of porosity, and voids with an eggshell-like crust. TEM analysis of the demineralized dentin sides of the fractured beams revealed the presence of an intermediate layer along the GIC-dentin interface. This zone was present on the fractured dentin surface in the case of interfacial failure, and beneath GIC remnants in specimens that exhibited a mixed failure mode. Significance: The findings suggest that the bonding of GIC to dentin is not weak and that the μTBS values probably represent the weak yield strengths of GICs under tension.

Original language	English (US)
Pages (from-to)	456-470
Number of pages	15
Journal	Dental Materials
Volume	17
Issue number	5
DOIs	https://doi.org/10.1016/S0109-5641(01)00007-0
State	Published - Sep 2001
Externally published	Yes

Keywords

Glass ionomer cement
Microtensile bond strength
Surface interaction zone
Ultrastructure

ASJC Scopus subject areas

Materials Science(all)
Dentistry(all)
Mechanics of Materials

Access to Document

10.1016/S0109-5641(01)00007-0

Cite this

@article{7017700ed782486c9287e338a563ca2a,

title = "Bonding of contemporary glass ionomer cements to dentin",

abstract = "Objective: The objective of this study was to investigate the microtensile bond strength (μTBS) of contemporary glass ionomer cements (GIC) to sound coronal dentin. Methods: Three specimen teeth were prepared for each material tested: Fuji IX GP (GC), ChemFlex (Dentsply) and Ketac-Molar Aplicap (ESPE). GIC buildups were made according to the manufacturers' instructions. After being stored at 37°C, 100% humidity for 24 h, the teeth were vertically sectioned into 1 × 1 mm beams for μTBS evaluation. Representative fractured beams were prepared for scanning (SEM) and transmission electron microscopic (TEM) examination. Results: Results of the μTBS test were: Fuji IX GP (12.4 ± 8.6 MPa), ChemFlex (15.0 ± 9.3 MPa) and Ketac-Molar Aplicap (11.4 ± 7.7 MPa). One-way ANOVA and a multiple comparison test showed that ChemFlex had a statistically higher μTBS (p < 0.05). SEM fractographic analysis showed that the predominant failure modes were interfacial and mixed failures. The GIC side of the fractured beams revealed dehydration cracks, a high level of porosity, and voids with an eggshell-like crust. TEM analysis of the demineralized dentin sides of the fractured beams revealed the presence of an intermediate layer along the GIC-dentin interface. This zone was present on the fractured dentin surface in the case of interfacial failure, and beneath GIC remnants in specimens that exhibited a mixed failure mode. Significance: The findings suggest that the bonding of GIC to dentin is not weak and that the μTBS values probably represent the weak yield strengths of GICs under tension.",

keywords = "Glass ionomer cement, Microtensile bond strength, Surface interaction zone, Ultrastructure",

author = "Yip, {H. K.} and Tay, {F. R.} and Ngo, {H. C.} and Smales, {R. J.} and Pashley, {D. H.}",

note = "Funding Information: We thank Y.Y. Chui and Joyce Yau of the Oral Biology Unit, Prince Philip Dental Hospital, and W.S. Lee of the Electron Microscopy Unit, The University of Hong Kong, for their technical support. This study was supported by CRC grant 10201258 from The University of Hong Kong, and by grant DE 06427 from the National Institute of Dental and Craniofacial Research, USA. The materials used in this study were generously supplied by Dentsply Asia (Hong Kong), ESPE GmbH (Seefeld, Germany) and GC International Corporation (Tokyo, Japan). The authors are grateful to Shirley Johnson for secretarial support. ",

year = "2001",

month = sep,

doi = "10.1016/S0109-5641(01)00007-0",

language = "English (US)",

volume = "17",

pages = "456--470",

journal = "Dental Materials",

issn = "0109-5641",

publisher = "Elsevier Science",

number = "5",

}

TY - JOUR

T1 - Bonding of contemporary glass ionomer cements to dentin

AU - Yip, H. K.

AU - Tay, F. R.

AU - Ngo, H. C.

AU - Smales, R. J.

AU - Pashley, D. H.

N1 - Funding Information: We thank Y.Y. Chui and Joyce Yau of the Oral Biology Unit, Prince Philip Dental Hospital, and W.S. Lee of the Electron Microscopy Unit, The University of Hong Kong, for their technical support. This study was supported by CRC grant 10201258 from The University of Hong Kong, and by grant DE 06427 from the National Institute of Dental and Craniofacial Research, USA. The materials used in this study were generously supplied by Dentsply Asia (Hong Kong), ESPE GmbH (Seefeld, Germany) and GC International Corporation (Tokyo, Japan). The authors are grateful to Shirley Johnson for secretarial support.

PY - 2001/9

Y1 - 2001/9

N2 - Objective: The objective of this study was to investigate the microtensile bond strength (μTBS) of contemporary glass ionomer cements (GIC) to sound coronal dentin. Methods: Three specimen teeth were prepared for each material tested: Fuji IX GP (GC), ChemFlex (Dentsply) and Ketac-Molar Aplicap (ESPE). GIC buildups were made according to the manufacturers' instructions. After being stored at 37°C, 100% humidity for 24 h, the teeth were vertically sectioned into 1 × 1 mm beams for μTBS evaluation. Representative fractured beams were prepared for scanning (SEM) and transmission electron microscopic (TEM) examination. Results: Results of the μTBS test were: Fuji IX GP (12.4 ± 8.6 MPa), ChemFlex (15.0 ± 9.3 MPa) and Ketac-Molar Aplicap (11.4 ± 7.7 MPa). One-way ANOVA and a multiple comparison test showed that ChemFlex had a statistically higher μTBS (p < 0.05). SEM fractographic analysis showed that the predominant failure modes were interfacial and mixed failures. The GIC side of the fractured beams revealed dehydration cracks, a high level of porosity, and voids with an eggshell-like crust. TEM analysis of the demineralized dentin sides of the fractured beams revealed the presence of an intermediate layer along the GIC-dentin interface. This zone was present on the fractured dentin surface in the case of interfacial failure, and beneath GIC remnants in specimens that exhibited a mixed failure mode. Significance: The findings suggest that the bonding of GIC to dentin is not weak and that the μTBS values probably represent the weak yield strengths of GICs under tension.

AB - Objective: The objective of this study was to investigate the microtensile bond strength (μTBS) of contemporary glass ionomer cements (GIC) to sound coronal dentin. Methods: Three specimen teeth were prepared for each material tested: Fuji IX GP (GC), ChemFlex (Dentsply) and Ketac-Molar Aplicap (ESPE). GIC buildups were made according to the manufacturers' instructions. After being stored at 37°C, 100% humidity for 24 h, the teeth were vertically sectioned into 1 × 1 mm beams for μTBS evaluation. Representative fractured beams were prepared for scanning (SEM) and transmission electron microscopic (TEM) examination. Results: Results of the μTBS test were: Fuji IX GP (12.4 ± 8.6 MPa), ChemFlex (15.0 ± 9.3 MPa) and Ketac-Molar Aplicap (11.4 ± 7.7 MPa). One-way ANOVA and a multiple comparison test showed that ChemFlex had a statistically higher μTBS (p < 0.05). SEM fractographic analysis showed that the predominant failure modes were interfacial and mixed failures. The GIC side of the fractured beams revealed dehydration cracks, a high level of porosity, and voids with an eggshell-like crust. TEM analysis of the demineralized dentin sides of the fractured beams revealed the presence of an intermediate layer along the GIC-dentin interface. This zone was present on the fractured dentin surface in the case of interfacial failure, and beneath GIC remnants in specimens that exhibited a mixed failure mode. Significance: The findings suggest that the bonding of GIC to dentin is not weak and that the μTBS values probably represent the weak yield strengths of GICs under tension.

KW - Glass ionomer cement

KW - Microtensile bond strength

KW - Surface interaction zone

KW - Ultrastructure

UR - http://www.scopus.com/inward/record.url?scp=0035458269&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035458269&partnerID=8YFLogxK

U2 - 10.1016/S0109-5641(01)00007-0

DO - 10.1016/S0109-5641(01)00007-0

M3 - Article

C2 - 11445213

AN - SCOPUS:0035458269

SN - 0109-5641

VL - 17

SP - 456

EP - 470

JO - Dental Materials

JF - Dental Materials

IS - 5

ER -

Bonding of contemporary glass ionomer cements to dentin

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this