Reinforcing Glaze Layer of Restorative Dental Zirconia by Adding Nano Alumina Ceramics

Moosa, Jaafar M.; Abdulzahraa, Haider G.; Zaidan, Shihab A.; Abed, Hafidh Yousif

doi:10.14704/nq.2021.19.6.nq21071

Cited by 4 publications

(8 citation statements)

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“…The reason behind these results was the mechanical properties of glazing layer that enhanced by Alumina. The amount of alumina in the glaze materials according to the analysis done by energy-dispersive Xray analysis (EDAX) test, this agrees with (Moosa et al, 2021) Increased Alumina concentration will result in more crystal phases forming, raising the glazing layer's Vickers hardness number ‫و‬ which in turn affects zirconia's surface resistance and shortens the lifespan of artificial teeth (7). The explanation for the decreased microhardness results in Vita and Soprano brand glazing materials may be because the monolithic zirconia glaze groups were heated throughout the glazing process to the sintering temperature.…”

Section: Discussionsupporting

confidence: 82%

“…In Table [5], Post Hoc Test (Bonferroni) shows a statistically significant difference between each two of the studied groups (VITA, Ivoclar, GC and Soprano) for hardness with p-value < 0.05, except for two, there no statistically significant association between (VITA & soprano) glaze and between (Ivoclar & GC) glaze with p-value > 0.05 for both. In Table [6], Energy-Dispersive X-Ray Analysis show the effect of the glazing materials on hardness will be related to one elemental composition Al weight % (7), which is used in this study. While the glazing material (powder) had more Aluminum (Al) in GC group than Ivoclar, VITA and Soprano.…”

Section: Resultmentioning

confidence: 99%

“…When illustrated, this holder was employed to permit the specimens' insertion and removal as they were being changed throughout the polishing technique as shown in Fig. [7] (13).…”

Section: Acrylic Holder Constructionmentioning

confidence: 99%

“…Additionally, it reduces the buildup of bacterial plaque and avoids excessive wear on teeth in the opposite jaw. Glazed ceramic materials reduce the amount of time a ceramic restoration is exposed to the oral environment, making the restoration smoother than unglazed ceramic (7). The Vickers hardness of the restorations, which is one of the best ways to gauge a material's hardness, affects the restorations' overall efficiency (8).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Effect of Different Glazing Brands on Hardness of Monolithic Zirconia Fabricated By CAD/CAM Technique

I. Fouad,

E. alwan Al Jorani,

Kareem J. Khadim Al-Azzawi

2023

TJDS

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The purpose of this study was to evaluate the hardness of different glazing brands materials on monolithic Zirconia. Materials and methods: - A CAD/CAM machine (computer aided design- computer aided manufacturing) was used to manufacture 40 specimens from a zirconia block (VITA Zahnfabric YZ®XT Color, 98.4x14mm height). The Vickers hardness test sample dimensions (diameter 10 mm and thickness 2 mm) were separated into 4 groups based on the brands of glazing materials used (VITA AKZENT® Plus, Ivoclar vivadent, GC Initial spectrum, Soprano glaze) powder and fluid. Data are statistically analyzed using statistical package for social science (SPSS), and the (ANOVA) test and Bonferroni test are used to determine whether the statistical hypothesis is true. Results: - For the hardness readings the higher mean value of Vickers hardness test in Zirconia was found in GC group (544.792±25.416) then Ivoclar group (538.622±18.701) while the lower mean of Vickers hardness was found in Vita group (475.800±15.699) followed by Soprano group (467.895±23.298).There was a statistically significant difference between each two groups (VITA, Ivoclar, GC and Soprano) with p-value < 0.05, except between (VITA & Soprano) and (Ivoclar & GC), there no statistically significant association with p-value >0.05 for both. : Zirconia glazed with GC paste (powder, fluid) has higher hardness than samples glazed with Ivoclar paste (powder, fluid) followed by VITA group then Soprano group that has lower hardness. Conclusion: - Zirconia coated with GC paste (powder, fluid) has a higher hardness than samples glazed with Ivoclar, VITA group and Soprano group.

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Section: Discussionsupporting

confidence: 82%

Section: Resultmentioning

confidence: 99%

“…When illustrated, this holder was employed to permit the specimens' insertion and removal as they were being changed throughout the polishing technique as shown in Fig. [7] (13).…”

Section: Acrylic Holder Constructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of the Effect of Different Glazing Brands on Hardness of Monolithic Zirconia Fabricated By CAD/CAM Technique

I. Fouad,

E. alwan Al Jorani,

Kareem J. Khadim Al-Azzawi

2023

TJDS

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“…Venkatesh et al (91) added the nano-ZrO2 particles synthesized using the sol-gel method into the glaze at different rates and showed that the increase in the nano-ZrO2 content directly increased the wear resistance of the material. Moosa et al (92) applied a glaze containing nano-Al2O3 with 13nm particle size at different rates on zirconia restorations and determined that it was effective in increasing the resistance of the restoration.…”

Section: Use In Dental Glaze Materialsmentioning

confidence: 99%

Nanoparticles and Their Application in Prosthetic Dentistry

GÜRSOY¹,

Yılmaz

2023

Clinical and Experimental Health Sciences

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In recent years, nanoparticles produced with nanotechnology have been widely used in many fields of medicine and dentistry such as prosthetic dental treatment. The advanced properties of nanoparticles such as biocompatibility, durability, solubility, large surface area, high stability, and thermal conductivity facilitate the development of dental materials. Compared to the traditional materials used, they can offer useful features, such as better diagnosis, treatment plans, improvement, and protection of oral health. Therefore, a better understanding of nanotechnology and nanoparticles is essential to appreciate how these materials can be utilised in our daily practice. This review provides an overview of nanoparticles and their applications in dentistry.

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Evaluation of biofilm formation on acrylic resins used to fabricate dental temporary restorations with the use of 3D printing technology

Mazurek-Popczyk

Nowicki²,

Arkusz

et al. 2022

BMC Oral Health

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Background Temporary implant-retained restorations are required to support function and esthetics of the masticatory system until the final restoration is completed and delivered. Acrylic resins are commonly used in prosthetic dentistry and lately they have been used in three-dimensional (3D) printing technology. Since this technology it is fairly new, the number of studies on their susceptibility to microbial adhesion is low. Restorations placed even for a short period of time may become the reservoir for microorganisms that may affect the peri-implant tissues and trigger inflammation endangering further procedures. The aim of the study was to test the biofilm formation on acrylamide resins used to fabricate temporary restorations in 3D printing technology and to assess if the post-processing impacts microbial adhesion. Methods Disk-shaped samples were manufactured using the 3D printing technique from three commercially available UV-curable resins consisting of acrylate and methacrylate oligomers with various time and inhibitors of polymerization (NextDent MFH bleach, NextDent 3D Plus, MazicD Temp). The tested samples were raw, polished and glazed. The ability to create biofilm by oral streptococci (S. mutans, S. sanguinis, S. oralis, S. mitis) was tested, as well as species with higher pathogenic potential: Staphylococcus aureus, Staphylococcus epidermidis and Candida albicans. The roughness of the materials was measured by an atomic force microscope. Biofilm formation was assessed after 72 h of incubation by crystal violet staining with absorbance measurement, quantification of viable microorganisms, and imaging with a scanning electron microscope (SEM). Results Each tested species formed the biofilm on the samples of all three resins. Post-production processing resulted in reduced roughness parameters and biofilm abundance. Polishing and glazing reduced roughness parameters significantly in the NextDent resin group, while glazing alone caused significant surface smoothing in Mazic Temp. A thin layer of microbial biofilm covered glazed resin surfaces with a small number of microorganisms for all tested strains except S. oralis and S. epidermidis, while raw and polished surfaces were covered with a dense biofilm, rich in microorganisms. Conclusions UV-curing acrylic resins used for fabricating temporary restorations in the 3D technology are the interim solution, but are susceptible to adhesion and biofilm formation by oral streptococci, staphylococci and Candida. Post-processing and particularly glazing process significantly reduce bacterial biofilm formation and the risk of failure of final restoration.

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Reinforcing Glaze Layer of Restorative Dental Zirconia by Adding Nano Alumina Ceramics

Cited by 4 publications

References 0 publications

Evaluation of the Effect of Different Glazing Brands on Hardness of Monolithic Zirconia Fabricated By CAD/CAM Technique

Evaluation of the Effect of Different Glazing Brands on Hardness of Monolithic Zirconia Fabricated By CAD/CAM Technique

Nanoparticles and Their Application in Prosthetic Dentistry

Evaluation of biofilm formation on acrylic resins used to fabricate dental temporary restorations with the use of 3D printing technology

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