Effect of SiO2 and Al2O3 nanoparticles on wear resistance of PMMA acrylic denture teeth

Helal, Mohamed Ahmed; Yang, Bin; Saad, E. A.; Abas, Mohamed; Al-kholy, Mohamed Reda Zaki; Imam, Ahmad; Gad, Mohammed M.

doi:10.14295/bds.2020.v23i3.1999

Cited by 17 publications

(13 citation statements)

References 23 publications

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“…in which all limits, sizes, frames, and measured parameters are expressed in pixels which are used to calculate average of heights (Ra1); subsequently, a 3D image of the surface profile of the sample was created using a digital image analysis system (Image J 1.43 U, National Institute of Health, USA) (Figure 2). 3D images were collected for each specimen and mean of surface roughness (μm) was calculated by averaging three readings of each specimen (at center and both sides) [17,27,29].…”

Section: Methodsmentioning

confidence: 99%

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Impact of Nanoparticles Additions on the Strength of Dental Composite Resin

Azmy¹,

Al-Kholy

Fattouh

et al. 2022

International Journal of Biomaterials

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Objective. This study aimed to evaluate the effect of nanoparticles, zirconium dioxide (ZrO2), titanium dioxide (TiO2), and silicon dioxide (SiO2), on flexural strength (FS), hardness, and wear resistance of light cured dental composite resin. Materials and Methods. 210 rectangular and disc-shaped composite resin specimens were fabricated with dimensions (25 × 2 × 2 ± 0.03 mm) and (6×4 ± 0.03 mm) for FS, hardness, and wear resistance, respectively (70/test). Specimens of each test were divided according to nanofillers into four groups, unmodified as control, ZrO2 (Z), TiO2 (T), and SiO2 (S) groups; each one was further subdivided into two subgroups according to nanoparticles concentration, 3wt.% and 7wt.% (Z3, Z7, T3, T7, S3, and S7), 10 specimens of each subgroup. A3-point bending test and Vickers hardness test were used for FS and hardness measurements, respectively. Wear resistance was evaluated by the differences in surface roughness of tested specimens before and after wear test. Two-way and 1-way ANOVA and Bonferroni’s post hoc tests were done for data analysis (α = 0.05). Results. Two-way ANOVA for FS and wear resistance showed that there was a significant interaction between type of nanoparticles and concentration of nanoparticles ( p < 0.001 ) while two-way ANOVA for hardness showed that both type of nanoparticles and concentration of nanoparticles had a significant effect ( p < 0.001 ), while the effect of their interaction was not statistically significant ( p = 0.142 ). 1-way-ANOVA test showed significant increase in FS and wear resistance for all tested groups ( p < 0.001 and p < 0.001 , respectively) except T7 and S7. Also, there was a significant enhancement in hardness for all tested groups ( p < 0.001 ). Conclusion. Modification of light cured composite resin with certain amounts of nanoparticles (3% and 7% of ZrO2 and 3% of TiO2 and SiO2) can be beneficial in improving flexural strength and wear resistance while hardness of composite resin was increased with all NPs additions.

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Section: Methodsmentioning

confidence: 99%

“…In another study, reinforcement of DRC with SiO 2 led to significant increase in hardness [16]. However, Helal et al recommended incorporating SiO 2 particles cautiously in PMMA denture teeth as they may decrease wear resistance [17].…”

Section: Introductionmentioning

confidence: 99%

Impact of Nanoparticles Additions on the Strength of Dental Composite Resin

Azmy¹,

Al-Kholy

Fattouh

et al. 2022

International Journal of Biomaterials

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“…Linear measures are obtained as the length of the pin changes; and, to assess the disc wear, profilometers or scanners [53,64] can be used [55]. Besides that, wear can be quantified by weighing both specimens before and after the test [50,51,72].…”

Section: Two-body Wear Testsmentioning

confidence: 99%

Wear of dental ceramics

Ramos

Augusto²,

Alves

et al. 2023

Braz. Dent. Sci.

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Based on the development of adhesive dentistry, minimally invasive restorations in ceramics are used as alternatives to restore a tooth. Dental ceramics are largely applied in the dentistry field mainly due to their esthetic and mechanical strength. One of the ceramic properties to be well known before its use is the wear resistance that should be compatible with the antagonist wear behavior to avoid unwanted performance. Therefore, several methods have been performed to assess the ceramic materials wear behavior considering different conditions present in the complex oral medium. This study aimed to compile the methods used to investigate dental ceramics wear and to describe the wear mechanisms involved on them. Obtaining and analyzing data is also addressed to discuss the results obtained from different methods, as well as the clinical analysis of wear and future perspectives on this topic. In conclusion, many methodologies are available to measure the ceramic wear. Therefore, the methods must be selected based on the clinical significance of each study and should follow previously reported parameters for standardization, allowing literature comparison.

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“…The most widely used denture teeth in denture fabrication are acrylic resin denture teeth due to their convenient handling, ease of contouring, high resilience, and bonding chemically to denture base; however, one of their major disadvantages is excessive wear with its unfavorable associated sequelae (6,7) .…”

Section: Introductionmentioning

confidence: 99%

Effect of Two Denture Teeth Materials on Masticatory Efficiency, Wear, Bonding to Denture Base

Ahmed¹,

El-Din

Kabeel

2022

ADJ-for Girls

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Purpose: This study compared between nano composite denture teeth and IPN crosslinked acrylic teeth regarding masticatory efficiency and some mechanical properties (wear, micro tensile bonding strength to denture base). Material and methods: Ten completely edentulous patients with ages ranging from 55-60 years were selected. Each patient received two dentures made from heat-cured acrylic resin , One with IPN crosslinked acrylic teeth and the other with nano composite teeth. Masticatory efficiency was evaluated for each patient at the time of insertion of the dentures and one month later.Laboratory study: For testing wear, thirty specimens were constructed and divided into two groups. Fifteen IPN cross-linked acrylic teeth (Group І) and Fifteen nano composite denture teeth (Group ІІ). For testing Micro tensile bonding strength, Twelve specimens were constructed of artificial teeth together with the heat-cured acrylic resin bases, These specimens were fixed to a micro-sawing machine and cut into one hundred and twenty micro beam samples which were then divided into two groups; sixty beams of IPN cross-linked acrylic teeth (Group І) and sixty beams of nano composite denture teeth (Group ІІ). Results: The results revealed no statistical significant differences (p ≤ 0.05) as indicated by paired t-test between IPN cross-linked acrylic teeth and nano composite teeth in masticatory efficiency, wear, and micro tensile bonding strength to the denture base. Conclusions: In comparison to IPN cross-linked acrylic teeth, nano composite denture teeth showed non-significant difference regarding masticatory efficiency, wear resistance, and micro tensile bonding strength to the denture base.

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Effect of SiO2 and Al2O3 nanoparticles on wear resistance of PMMA acrylic denture teeth

Cited by 17 publications

References 23 publications

Impact of Nanoparticles Additions on the Strength of Dental Composite Resin

Impact of Nanoparticles Additions on the Strength of Dental Composite Resin

Wear of dental ceramics

Effect of Two Denture Teeth Materials on Masticatory Efficiency, Wear, Bonding to Denture Base

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