Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Effect of TiO2 nanoparticles incorporation on antibacterial properties and shear bond strength of dental composite used in Orthodontics

Wed Nov 30 18:38:45 2022

(2017) Effect of TiO2 nanoparticles incorporation on antibacterial properties and shear bond strength of dental composite used in Orthodontics. Dental press journal of orthodontics. pp. 67-74. ISSN 2177-6709 (Electronic) 2176-9451 (Linking)

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/29160346

Abstract

INTRODUCTION: Plaque accumulation and bond failure are drawbacks of orthodontic treatment, which requires composite for bonding of brackets. As the antimicrobial properties of TiO2 nanoparticles (NPs) have been proven, the aim of this study was to evaluate the antimicrobial and mechanical properties of composite resins modified by the addition of TiO2 NPs. METHODS: Orthodontics composite containing 0, 1, 5 and 10 NPs were prepared. 180 composite disks were prepared for elution test, disk agar diffusion test and biofilm inhibition test to collect the counts of microorganisms on three days, measure the inhibition diameter and quantify the viable counts of colonies consequently. For shear bond strength (SBS) test, 48 intact bovine incisors were divided into four groups. Composites containing 0, 1, 5 and 10 NPs were used for bonding of bracket. The bracket/tooth SBS was measured by using an universal testing machine. RESULTS: All concentration of TiO2 NPs had a significant effect on creation and extension of inhibition zone. For S. mutans and S. sanguinis, all concentration of TiO2 NPs caused reduction of the colony counts. Composite containing 10 TiO2 NPs had significant effect on reduction of colony counts for S. mutans and S. sanguinis in all three days. The highest mean shear bond strength belonged to the control group, while the lowest value was seen in 10 NPs composite. CONCLUSIONS: Incorporating TiO2 nanoparticles into composite resins confer antibacterial properties to adhesives, while the mean shear bond of composite containing 1 and 5 NPs still in an acceptable range.

Item Type: Article
Creators:
CreatorsEmail
Sodagar, A.UNSPECIFIED
Akhoundi, M. S. A.UNSPECIFIED
Bahador, A.UNSPECIFIED
Jalali, Y. F.UNSPECIFIED
Behzadi, Z.UNSPECIFIED
Elhaminejad, F.UNSPECIFIED
Mirhashemi, A. H.UNSPECIFIED
Keywords: Animals Anti-Bacterial Agents/analysis/*pharmacology Cattle Composite Resins/chemistry/*pharmacology *Dental Bonding Dental Enamel/microbiology Incisor/microbiology *Nanoparticles Orthodontic Brackets Shear Strength Streptococcus mutans/drug effects Streptococcus sanguis/drug effects Titanium/analysis/*pharmacology
Divisions:
Page Range: pp. 67-74
Journal or Publication Title: Dental press journal of orthodontics
Journal Index: Pubmed
Volume: 22
Number: 5
Identification Number: https://doi.org/10.1590/2177-6709.22.5.067-074.oar
ISSN: 2177-6709 (Electronic) 2176-9451 (Linking)
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/1010

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