Evaluation of glass ionomer cements properties obtained from niobium silicate glasses prepared by chemical process: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

Evaluation of glass ionomer cements properties obtained from niobium silicate glasses prepared by chemical process

Bertolini, Marcio Jose / Palma-Dibb, Regina Guenka / Zaghete, Maria Aparecida / Gimenes, Rossano

Glass ionomer cements (GICs) are glass and polymer composite materials. These materials currently find use in the dental field. The purpose of this work is to obtain systems based on composition 4.5SiO₂-3Al ₂O₃-XNb₂O₅-2CaO to be used in Dentistry. The systems were prepared by chemical route at 700 degree C. The results obtained by XRD and DTA showed that all systems prepared are glasses. The structures of the obtained glasses were compared to commercial material using ²⁷Al and ²⁹Si MAS NMR. The analysis of MAS NMR spectra indicated that the systems developed and commercial material are formed by SiO₄ and AlO₄ linked tetrahedra. The properties of glass ionomer cements based on the glasses prepared with several niobium contents were studied. Setting and working times of the cement pastes, microhardness and diametral tensile strength were evaluated for the experimental GICs and commercial luting cements. It was concluded that setting time of the cement pastes increased with increasing niobium content of the glasses (X). The properties to the GICs such as setting time and microhardness were influenced by niobium content.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Evaluation of glass ionomer cements properties obtained from niobium silicate glasses prepared by chemical process

Bertolini, Marcio Jose / Palma-Dibb, Regina Guenka / Zaghete, Maria Aparecida / Gimenes, Rossano

Glass ionomer cements (GICs) are glass and polymer composite materials. These materials currently find use in the dental field. The purpose of this work is to obtain systems based on composition 4.5SiO₂-3Al ₂O₃-XNb₂O₅-2CaO to be used in Dentistry. The systems were prepared by chemical route at 700 degree C. The results obtained by XRD and DTA showed that all systems prepared are glasses. The structures of the obtained glasses were compared to commercial material using ²⁷Al and ²⁹Si MAS NMR. The analysis of MAS NMR spectra indicated that the systems developed and commercial material are formed by SiO₄ and AlO₄ linked tetrahedra. The properties of glass ionomer cements based on the glasses prepared with several niobium contents were studied. Setting and working times of the cement pastes, microhardness and diametral tensile strength were evaluated for the experimental GICs and commercial luting cements. It was concluded that setting time of the cement pastes increased with increasing niobium content of the glasses (X). The properties to the GICs such as setting time and microhardness were influenced by niobium content.

Evaluation of glass ionomer cements properties obtained from niobium silicate glasses prepared by chemical process

Bertolini, Marcio Jose / Palma-Dibb, Regina Guenka / Zaghete, Maria Aparecida / Gimenes, Rossano

Glass ionomer cements (GICs) are glass and polymer composite materials. These materials currently find use in the dental field. The purpose of this work is to obtain systems based on composition 4.5SiO₂-3Al ₂O₃-XNb₂O₅-2CaO to be used in Dentistry. The systems were prepared by chemical route at 700 degree C. The results obtained by XRD and DTA showed that all systems prepared are glasses. The structures of the obtained glasses were compared to commercial material using ²⁷Al and ²⁹Si MAS NMR. The analysis of MAS NMR spectra indicated that the systems developed and commercial material are formed by SiO₄ and AlO₄ linked tetrahedra. The properties of glass ionomer cements based on the glasses prepared with several niobium contents were studied. Setting and working times of the cement pastes, microhardness and diametral tensile strength were evaluated for the experimental GICs and commercial luting cements. It was concluded that setting time of the cement pastes increased with increasing niobium content of the glasses (X). The properties to the GICs such as setting time and microhardness were influenced by niobium content.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Document information

Title:

Evaluation of glass ionomer cements properties obtained from niobium silicate glasses prepared by chemical process

Contributors:

Bertolini, Marcio Jose (author) / Palma-Dibb, Regina Guenka (author) / Zaghete, Maria Aparecida (author) / Gimenes, Rossano (author)

Published in:

Journal of Non-Crystalline Solids ; 351 ; 466-471

Publication date:

2005

Size:

6 Seiten, 20 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.jnoncrysol.2005.01.040

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Ionomer , Glas , Niobverbindung , Mikrohärte , Verbundwerkstoff , Zugfestigkeit , chemische Analyse , chemisches Verfahren , Zementpaste , Dentalzement , Silicatglas , Niobsilicat , Materialeigenschaft

Similar titles

Glass ionomer dental cements: update

Nicholson, J.W. | British Library Online Contents | 2010

Fluoride release from glass polyalkenoate (ionomer) cements

Hill, R. G. / De Barra, E. / Griffin, S. et al. | British Library Online Contents | 1995

Secondary reactions in glass-ionomer cements

Wilson, A. D. | British Library Online Contents | 1996

NMR Microscopy of Glass-Ionomer Cements

Jarh, O. / Sepe, A. / Jevnikar, P. et al. | British Library Conference Proceedings | 1998

Toughness of glass fibres reinforced glass-ionomer cements

Lucksanasombool, P. / Higgs, W. A. J. / Higgs, R. J. E. D. et al. | British Library Online Contents | 2002