The effect of Titanium Dioxide Nanoparticles on microhardness and SEM-EDS analysis of glass ionomer cement and amalgomer

Year 2021, Volume: 8 Issue: 3, 623 - 628, 31.12.2021

Özge Kam Hepdeniz , Osman Gürdal

https://doi.org/10.15311/selcukdentj.736307

Cited By: 1

Abstract

Amaç: Bu çalışmanın amacı, titanyum dioksit (TiO2) nanopartikül ilavesinin, bir geleneksel cam-iyonomer ve bir amalgomerin elementel kompozisyonu ve mikro sertliği üzerine etkisini incelemektir.
Gereç ve Yöntemler: Bu çalışmada, bir geleneksel cam iyonomer siman ve bir amalgomer kullanıldı. Her bir materyalden teflon kalıplar (8x2) kullanılarak 17 adet disk şeklinde örnek hazırlandı ve kontrol grubu olarak belirlendi. Daha sonra her bir materyal, anataz fazında, partikül büyüklüğü 17 nm olan ağırlıkça % 3 oranında TiO2 nanopartiküller ile karıştırıldı. TiO2 nanopartikül ihtiva eden her bir materyalden de 17 adet örnek hazırlanarak deney grupları oluşturuldu. TiO2 nanopartiküllerinin karakterizasyonu, gruplara ait örneklerin yüzey morfolojisinin değerlendirilmesi ve elemental kompozisyonlarının analizi, Taramalı Elektron Mikroskobu (SEM) ve Enerji Dağılım Spektrometresi (SEM-EDS) ile gerçekleştirildi. Örnekler, 100 g yükte 10 sn boyunca Vickers mikro sertlik testine tabi tutuldu. Veriler, Shapiro-Wilk, Kruskal-Wallis ve Bonferroni post-hoc testleri ile analiz edildi (p=0.05).
Bulgular: EDS haritalaması, kontrol ve deney gruplarının bileşiminde, geleneksel cam iyonomerler için tipik olan elementlerin varlığını ve deney gruplarının bileşiminde yüksek oranda titanium varlığı gösterdi. Mikro sertlik verileri, kontrol grubuna kıyasla deney gruplarında istatistiksel olarak anlamsız küçük bir artış gösterdi (p>0.05). En yüksek ortalama mikro sertlik değeri Amalgomer'de (deney grubu) (84.34 ± 4.33) kaydedilirken, İonofil (kontrol grubu) en düşük ortalama mikro sertlik değerini (58.62 ± 6.90) gösterdi.
Sonuç: Bu çalışmanın sınırları dahilinde, modifiye edilmemiş GIC'lere ve amalgomere kıyasla, % 3 Ti02 nanopartikül ilavesinin test edilen materyallerin yüzey mikro sertliğini, istatistiksel olarak önemsiz olmasına rağmen, arttırdığı sonucuna varılabilir.

Keywords

Glass ionomer, hardness tests, nanoparticles

The Effect of Titanium Dioxide Nanoparticles On Microhardness and SEM-EDS Analysis of Glass Ionomer Cement and Amalgomer

Abstract

Background: The aim of this study was to examine the effect of the addition of titanium dioxide (TiO2) nanoparticles on elemental composition and micro hardness of a conventional glass-ionomer and an amalgomer.
Methods: A conventional glass ionomer cement (GICs) and an amalgomer were used in this study. Seventeen samples were prepared from each material using teflon molds (8 x 2) and determined as the control group. Each material was then blended with 3 % (w/w) TiO2 nanoparticles (anatase phase, 17 nm particle size) and seventeen samples were prepared to form experimental groups. Characterization of TiO2 nanoparticles, surface morphology evaluation and elemental composition analysis of the specimens were performed by Scanning Electron Microscope (SEM) and Energy Distribution Spectrometry (SEM-EDS). Specimens were submitted to the Vickers micro hardness test for 10 seconds at a load of 100gf. Data were analyzed with Shapiro-Wilk, Kruskal-Wallis and Bonferroni post-hoc tests (p=0.05).
Results: EDS mapping showed the presence of elements typical for (GICs) in the composition of the control and experimental groups and a high proportion of titanium in the composition of experimental groups. Micro hardness data showed a small insignificant increase for the experimental groups compared with the control groups (p>0.05). While the highest mean microhardness value was recorded in Amalgomer (experimental) (84.34±4.33), Ionofil (control) exhibited the lowest mean micro hardness value (58.62±6.90).
Conclusion: Within the limitations of this study, it can be concluded that the addition of 3% Ti02 nanoparticles improves the surface microhardness of the tested materials, although statistically insignificant, compared to unmodified GICs and amalgomer.

Keywords

Glass ionomer, Hardness tests, Nanoparticles

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