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06.04.2018 | Original Article

Dentin sealing and antibacterial effects of silver-doped bioactive glass/mesoporous silica nanocomposite: an in vitro study

verfasst von: Jae-Hyun Jung, Dong-Hyun Kim, Kyung-Hyeon Yoo, Seog-Young Yoon, Yeon Kim, Moon-Kyoung Bae, Jin Chung, Ching-Chang Ko, Yong Hoon Kwon, Yong-Il Kim

Erschienen in: Clinical Oral Investigations | Ausgabe 1/2019

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Abstract

Objectives

To synthesize a silver-doped bioactive glass/mesoporous silica nanoparticle (Ag-BGN@MSN), as well as to investigate its effects on dentinal tubule occlusion, microtensile bond strength (MTBS), and antibacterial activity.

Materials and methods

Ag-BGN@MSN was synthesized using a modified “quick alkali-mediated sol-gel” method. Demineralized tooth disc models were made and divided into four groups; the following treatments were then applied: group 1—no treatment, group 2—bioglass, group 3—MSN, group 4—Ag-BGN@MSN. Next, four discs were selected from each group and soaked into 6 wt% citric acid to test acid-resistant stability. Dentinal tubule occlusion, as well as the occlusion ratio, was observed using field-emission scanning electron microscopy. The MTBS was also measured to evaluate the desensitizing effect of the treatments. Cytotoxicity was examined using the MTT assay. Antibacterial activity was detected against Lactobacillus casei, and ion dissolution was evaluated using inductively coupled plasma optical emission spectrometry.

Results

Ag-BGN@MSN effectively occluded the dentinal tubule and formed a membrane-like layer. After the acid challenge, Ag-BGN@MSN had the highest rate of dentinal tubule occlusion. There were no significant differences in MTBS among the four groups (P > 0.05). All concentrations of Ag-BGN@MSN used had a relative cell viability above 72%.

Conclusions

Ag-BGN@MSN was successfully fabricated using a modified sol-gel method. The Ag-BGN@MSN biocomposite effectively occluded dentinal with acid-resistant stability, did not decrease bond strength in self-etch adhesive system, had low cytotoxicity, and antibacterial effect.

Clininal relevance

Dentinal tubule sealing induced by Ag-BGN@MSN biocomposite with antibacterial effect is likely to increase long-term stability in DH.

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Titel: Dentin sealing and antibacterial effects of silver-doped bioactive glass/mesoporous silica nanocomposite: an in vitro study
verfasst von: Jae-Hyun Jung
Dong-Hyun Kim
Kyung-Hyeon Yoo
Seog-Young Yoon
Yeon Kim
Moon-Kyoung Bae
Jin Chung
Ching-Chang Ko
Yong Hoon Kwon
Yong-Il Kim
Publikationsdatum: 06.04.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Clinical Oral Investigations / Ausgabe 1/2019
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-018-2432-z

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Dentin sealing and antibacterial effects of silver-doped bioactive glass/mesoporous silica nanocomposite: an in vitro study

Abstract

Objectives

Materials and methods

Results

Conclusions

Clininal relevance

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Abstract

Objectives

Materials and methods

Results

Conclusions

Clininal relevance

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