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71556

Effect of Monolithic Zirconia vs. Gold Alloy on the Wear of Human Enamel: An in vitro study

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Last updated: 22 Jan 2023

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Abstract

The purpose of this study was to evaluate the effect of monolithic zirconia vs. gold alloy type IV on the wear of human enamel under different occlusal loads. Materials and Methods: Forty square plate specimens, 6×6×2 mm, were prepared from monolithic zirconia (Bruxzir, n=20) and type IV gold (Begostar, n=20) and divided into two groups. Forty freshly extracted premolar teeth for orthodontic purpose were sectioned mesio-distally and only the cusp tips of the buccal halves were used as antagonists in the testing procedures. All of the specimens were mounted to chewing simulator with the cusp antagonists, half of them were subjected to(50000 chewing cycles under 50N load), the other were subjected to (50000 chewing cycles under 150N load)cyclic loading (50 N load, 3700 cycles ). Data were submitted to two-way ANOVA, and statistical significance was set at p < 0.05. Results: Type IV gold alloy based restorations had significantly little wear effect on human enamel than that of monolithic zirconia (Bruxzir) based restorations in high load. However in low load it was non-significant.

DOI

10.21608/ajdsm.2018.71556

Authors

First Name

Mohamed

Last Name

Khalil Elgohary

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Affiliation

Demonstrator , Crown and Bridge Department , Faculty of Dental Medicine, (Assuit ), Al-Azhar University

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First Name

Hussien

Last Name

Abdulrazek

MiddleName

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Affiliation

Lecturer, Crown and Bridge Department , Faculty of Dental Medicine, Boys, Cairo, Al-Azhar University (Assuit branch),

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Orcid

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First Name

Khalid

Last Name

M. Haggag

MiddleName

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Affiliation

Assistant Professor, Crown and Bridge Department, Faculty of Dental Medicine (Boys-Cairo), Al-Azhar University.

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Volume

21

Article Issue

3

Related Issue

10890

Issue Date

2018-07-01

Receive Date

2020-02-17

Publish Date

2018-07-01

Page Start

253

Page End

260

Print ISSN

1110-6751

Online ISSN

2682-3314

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https://ajdsm.journals.ekb.eg/article_71556.html

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https://ajdsm.journals.ekb.eg/service?article_code=71556

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8

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Original Article

Type Code

848

Publication Type

Journal

Publication Title

Al-Azhar Journal of Dental Science

Publication Link

https://ajdsm.journals.ekb.eg/

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Article

Created At

22 Jan 2023