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216677

FRACTOGRAPHIC ANALYSIS OF MONOLITHIC AND BILAYERED ZIRCONIA AFTER THERMO-MECHANICAL FATIGUE AND FRACTURE STRENGTH TEST

Article

Last updated: 23 Dec 2024

Subjects

-

Tags

Fixed Prosthodontics

Abstract

Objective: To study the fracture pattern of different zirconia restorations.
Materials and Methods: A first upper premolar sound natural tooth was prepared and duplicated into epoxy resin die. Twenty-one full coverage crowns were fabricated and divided into three groups according to type of ceramic material.; super high translucent monolithic zirconia (Zolid fx) group (A), super translucent monolithic zirconia (STML Katana) group (B), and zirconia core (Ceramill zi) with hand-layered veneering porcelain (Vita VM9) group (C). Crowns were cemented with self-adhesive resin cement. All samples were first subjected to thermal cycling (5o-55oC/10,000 cycle) and then to chewing simulator (240,000 cycles, 50N). After fracture resistance test, fractographic method was used to analyze the fractured samples.
Results: the fracture origin of all studied groups was similar with crack origin located at occlusal surface (cone crack). Crack origins were indicated with mirror regions with appearing lines of hackle.
Conclusion: the fracture origin was found to be dependent on the fracture resistance technique rather than the material itself.
Keywords: fractographic analysis, zirconia, artificial aging.

DOI

10.21608/edj.2021.103069.1842

Keywords

fractographic analysis, Zirconia, artificial aging

Authors

First Name

abdulmoein

Last Name

Alzhairi

MiddleName

-

Affiliation

Msc, Fixed Prosthodontics, Faculty of Dentistry, MAS University, Cairo, Egypt

Email

dentist_2015@hotmail.co.uk

City

-

Orcid

0009-0005-6711-8542

First Name

Ahmed

Last Name

Hamdy

MiddleName

-

Affiliation

Professor, Professor of Fixed Prosthodontics, Faculty of Dentistry, MSA University,Cairo, Egypt.

Email

amhamdy@msa.eun.eg

City

-

Orcid

-

First Name

Faisal

Last Name

Hamza

MiddleName

-

Affiliation

Assistant Professor, Fixed Prosthodontics, Faculty of Dentistry, MSA University, Cairo, Egypt

Email

fs.hamza@gmail.com

City

-

Orcid

-

Volume

68

Article Issue

1

Related Issue

30583

Issue Date

2022-01-01

Receive Date

2021-10-27

Publish Date

2022-01-01

Page Start

839

Page End

845

Print ISSN

0070-9484

Online ISSN

2090-2360

Link

https://edj.journals.ekb.eg/article_216677.html

Detail API

https://edj.journals.ekb.eg/service?article_code=216677

Order

25

Type

Original Article

Type Code

254

Publication Type

Journal

Publication Title

Egyptian Dental Journal

Publication Link

https://edj.journals.ekb.eg/

MainTitle

FRACTOGRAPHIC ANALYSIS OF MONOLITHIC AND BILAYERED ZIRCONIA AFTER THERMO-MECHANICAL FATIGUE AND FRACTURE STRENGTH TEST

Details

Type

Article

Created At

22 Jan 2023