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201745

Laboratory Evaluation of Different Posts in Restoring Badly Broken Primary Incisors

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Last updated: 23 Jan 2023

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Abstract

Aim : The aim of this study was to evaluate the shear bond strength (SBS) and fracture resistance (FR) of endodontically treated primary anterior teeth restored: with composite resin reinforced with three different post systems. (1) Ribbon fiber posts; (2) glass fiber posts; and, (3) orthodontic metal wire posts cemented by glass ionomer cement (GIC). Methods: This laboratory study was performed on 60 extracted human primary maxillary incisors. Samples were randomly divided into 3 groups of 20 teeth each: group 1 (ribbon fiber posts and composite core); group 2 (glass fiber posts and composite core) and group3 (orthodontic metal shaped wire posts and composite core). Each main test group subdivided into two subgroups (I, II) of 10 teeth each according to the laboratory test used, shear bond and fracture strength respectively. Mounted specimens were subjected to an Instron testing machine. Results: For shear bond strength, Stainless steel group recorded the highest mean value (14.4±2.4Mpa) followed by Glass fiber group (5.6±4.01Mpa) while ribbon fiber group recorded the lowest mean value (4.9±2.8Mpa). The difference between all groups was statistically significant (p < 0.05) as indicated by ANOVA test. For fracture resistance, Glass fiber group recorded the highest mean value (146.018±37.96N) followed by ribbon fiber group (133.3±38.222N), while Stainless steel group recorded the lowest mean value (111.48±30.522N). The difference between all groups was statistically significant (p < 0.05) as indicated by ANOVA test. Conclusion:orthodontic metal wire posts and glass fiber posts proved their advantages regarding the shear bond& fracture resistance respectively.

DOI

10.21608/mjd.2015.201745

Volume

2

Article Issue

4

Related Issue

28212

Issue Date

2015-10-01

Receive Date

2021-10-28

Publish Date

2015-10-01

Page Start

39

Page End

42

Print ISSN

2735-4172

Online ISSN

2812-5479

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https://mjd.journals.ekb.eg/article_201745.html

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https://mjd.journals.ekb.eg/service?article_code=201745

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10

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Original Article

Type Code

1,715

Publication Type

Journal

Publication Title

Mansoura Journal of Dentistry

Publication Link

https://mjd.journals.ekb.eg/

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Article

Created At

23 Jan 2023