A Study of the Fracture Resistance of Nyyar Cores of Three Restorative Materials

Ferrier, S.; Sekhon, Balraj S; Brunton, Paul

doi:10.2341/07-90

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…The composite material matches the tooth color and can be prepared at the same visit [ 3 ]. Drawbacks include polymerization shrinkage and microleakage [ 21 ]. Glass ionomers are not strong enough to be used as a core build-up material [ 21 ].…”

Section: Discussionmentioning

confidence: 99%

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An Evaluation of the Fracture Resistance of Endodontically Treated Teeth Restored With Two Types of Posts (Diamond Posts and Fiber Posts): An In Vitro Study

Hussam Eddien,

Abdullah

2023

Cureus

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Objectives: The aim of this study is to compare the fracture resistance and the mode of failure of endodontically treated permanent mandibular premolars restored with two types of posts: diamond posts and glass-fiber posts. Materials and methods: Forty human mandibular premolars indicated for orthodontic extraction were collected for this study and were similar in shape, size, and length. The teeth were sectioned horizontally, 1 mm above the cementoenamel junction. Root canal treatment was carried out on all specimens, and obturation was done by lateral condensation. The teeth were randomly divided into two groups. The post space was prepared in the first group to receive the diamond posts and in the second group to receive the fiber posts. A dual-cure resin material was used for cementing the posts and building up the cores. Then, they were subjected to a compressive load at a cross-head speed of 1 mm per minute and at an angle of 135 degrees to the long axis of the tooth until a fracture occurred using a universal testing machine. Fracture resistance and the mode of failure were assessed. The fracture above the acrylic block level was considered favorable, and the fracture below the acrylic block level was considered unfavorable. The data were analyzed statistically. The statistical analysis of fracture resistance between the two groups was carried out with a t-test. The statistical analysis for the failure mode of the teeth was carried out with a chi-square test. Results: There was a statistically significant difference showing that the diamond posts had better fracture resistance when compared with glass-fiber posts, while there was no statistically significant difference in terms of the failure mode between the two posts. Conclusion: Within the limitations of this study, it can be concluded that diamond posts showed higher fracture resistance than glass-fiber posts. Glass-fiber posts showed more favorable failure modes but were statistically insignificant compared to diamond posts.

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Section: Discussionmentioning

confidence: 99%

“…Drawbacks include polymerization shrinkage and microleakage [ 21 ]. Glass ionomers are not strong enough to be used as a core build-up material [ 21 ]. The use of core materials for cementing posts is an effective method [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

An Evaluation of the Fracture Resistance of Endodontically Treated Teeth Restored With Two Types of Posts (Diamond Posts and Fiber Posts): An In Vitro Study

Hussam Eddien,

Abdullah

2023

Cureus

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“…[ 9 10 ] Newer commercially available formulations that have different combinations of materials have been introduced lately. [ 11 12 ] These alternatives are available as flowable resin core build-up materials. Although they are tooth colored, there are concerns about their mechanical properties because the filler content had to be decreased to improve the flowability.…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of the compressive, tensile, and flexural strengths of paracore®, flourocore®2+, and multicore® resin-based core build-up materials – An in vitro study

Sharma¹,

Shetty

Ali

et al. 2021

J Conserv Dent

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Aims: The study was aimed to evaluate and compare the compressive, diametral tensile, and flexural strengths of three different commercial resin based core materials and to single out the best resin-based core build-up material with respect to their physical properties among ParaCore® (Coltene Whaledent, USA), FlouroCore® 2+ (Dentsply International, USA), MultiCore® (Ivoclar Vivadent, Liechtenstein) with Miracle Mix® (GC America) core used as control. Materials and Methods: One hundred and twenty samples were prepared, of which forty samples (10 of each material) were prepared in cylindrical stainless steel molds (height 6 mm, diameter 4 mm) for compressive strength measurements. Other forty samples (10 of each material) were prepared in cylindrical molds (diameter 6 mm, height 2 mm) for diametral tensile strength measurements. Forty samples (10 of each material) were prepared in stainless steel molds cuboidal in shape (length 25 mm, thickness 2 mm, and width 2 mm) for flexural strength measurements. The samples were tested on a Universal testing machine (Instron Machine 3366, made in the USA). Statistical Analysis Used: One-way analysis of variance was performed to determine any statistically significant differences ( P < 0.05) among the resin-based core build-up materials with respect to their three respective strengths. Further, the statistical comparison was made among the four materials using Student's t -test at a significance level of 5%. Results: Based on the results obtained it can be summarized that the ParaCore is the strongest material among all the four materials, followed by MultiCore, FlouroCore2+, and Miracle Mix. The Miracle mix is the weakest among all the materials owing to its inferior strength values. Conclusion: The results of the present study imply that, in consideration of their superior strength values, resin-based core build-up materials, ParaCore, MultiCore, and FlouroCore2+ should be a preferred for use as core build-up material over Miracle Mix in specific clinical situations, in the same order of preference.

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“…Patients are increasingly requesting biocompatible metal-free restorative systems, which are readily available in the market. [1011]…”

Section: Introductionmentioning

confidence: 99%

An in vitro comparative evaluation of physical properties of four different types of core materials

Agrawal

Kundabala

2014

J Conserv Dent

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Introduction:Compressive and tensile stresses of core materials are important properties because cores usually replace a large bulk of tooth structure and must resist multidirectional masticatory forces for many years.Material and Methods:The present study was undertaken to find out the best core build up material with respect to their physical properties among resin-based composites. Individual compressive, tensile, and flexural strength of fiber-reinforced dual cure resin core build up material, silorane-based composite resin, and dual curing composite for core build up with silver amalgam core was used as control were evaluated and compared using universal testing machine. Data were statistical analysed using Kruskal-Wallis test to determine whether statistically significant differences (P < 0.05) existed among core materials. Both dual cure composite materials with nanofillers were found superior to amalgam core. The silorane-based material showed the highest flexural strength, but other mechanical properties were inferior to dual cure composite materials with nanofillers.

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A Study of the Fracture Resistance of Nyyar Cores of Three Restorative Materials

Cited by 6 publications

References 25 publications

An Evaluation of the Fracture Resistance of Endodontically Treated Teeth Restored With Two Types of Posts (Diamond Posts and Fiber Posts): An In Vitro Study

An Evaluation of the Fracture Resistance of Endodontically Treated Teeth Restored With Two Types of Posts (Diamond Posts and Fiber Posts): An In Vitro Study

Comparative evaluation of the compressive, tensile, and flexural strengths of paracore®, flourocore®2+, and multicore® resin-based core build-up materials – An in vitro study

An in vitro comparative evaluation of physical properties of four different types of core materials

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