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71690

Vicker’s-Hardness Evaluation of Light Cured Resin Impregnated Fiber Glass Reinforced Complete Denture

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Last updated: 22 Jan 2023

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Abstract

Background: Hardness could found to be sensitive to the residual monomer content in the polymerized resins; the hardness is an effective method to evaluate the polymerization depth of resin materials. In addition, hardness had used to predict the wear resistance of dental materials. Materials and Methods: Acrylic resin specimens had divided into two groups according to the type of material tested (group I: conventional heat cured acrylic resin, group II: resin impregnated fiberglass reinforced complete denture base). Vicker`s micro hardness tester was used to measure Vicker`s hardness number (VH) of the acrylic specimens in which diamond indenter was applied under 25 g load for 10 seconds time evaluated by 20 x objective lens. Results: The VH values of resin impregnated fiberglass reinforced acrylic resin showed statistically insignificant lower values (as P < 0.05) than conventional heat cured acrylic resin. Conclusion: Unreacted monomer would act as a plasticizer and weaken the matrix. Heat cured PMMA could perform better in this aspect that the residual monomer content was less when compared to PMMA reinforced through other mechanisms. Key words: Hardness, Fiber, Reinforce, Denture.

DOI

10.21608/ajdsm.2018.71690

Keywords

hardness, fiber, Reinforce, Denture

Authors

First Name

Shady

Last Name

M. El-Naggar

MiddleName

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Affiliation

Ass. Lecturer at Oral Removable Prosthodontics Department, Faculty of Oral and Dental Medicine, South Valley University

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Orcid

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First Name

Mohamed

Last Name

Seif El Nasr

MiddleName

Ibrahim

Affiliation

Prof. of Oral Removable Prosthodontics Department, Faculty of Dentistry (Cairo), Azhar University (Boys).

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City

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Orcid

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First Name

Hassan

Last Name

Sakr

MiddleName

Mohamed Hassan

Affiliation

Assistant Prof. of Oral Removable Prosthodontics Department, Faculty of Dentistry (Cairo), Azhar University (Boys).

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City

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Orcid

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Volume

21

Article Issue

5

Related Issue

10905

Issue Date

2018-12-01

Receive Date

2020-02-17

Publish Date

2018-12-01

Page Start

485

Page End

489

Print ISSN

1110-6751

Online ISSN

2682-3314

Article File

AJDSM_Volume 21_Issue 5_Pages 485-489.pdf

PDF . 665.8kB

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https://ajdsm.journals.ekb.eg/article_71690.html

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https://ajdsm.journals.ekb.eg/service?article_code=71690

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12

Type

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