The three-point bending test of fiber-reinforced composite root canal posts

Biały, Michał; Szust, Agnieszka; Napadłek, Piotr; Więckiewicz, Włodzimierz

doi:10.17219/acem/125426

Cited by 6 publications

(4 citation statements)

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“…The flexural strength depends on the specimen configuration and is calculated by the highest load a sample can withstand. The flexural modulus is the property that defines the flexibility of a sample; the higher values, the stiffer the material, while lower values indicate higher flexibility by taking into consideration the elastic behavior of a sample within a load range that will not cause plastic deformation [4], [5]. The 3-point bending test is determined by some factors such as the span distance, the post shape, design, and diameter of the fiber post [22].…”

Section: Discussionmentioning

confidence: 99%

“…Endodontic therapy is mostly followed by post and core restorations attempting to restore the missed tooth structure and provide crown retention [1], [2], [3]. For optimum results, materials used for post-fabrication must exhibit physical and mechanical properties like that of dentin; closely matching elastic moduli results in homogenous distribution of occlusal stresses along with the roots, thus fracture risk is reduced, moreover, posts should be able to bond to the tooth structure and should be biocompatible in the oral environment [4], [5], [6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties

Hesham

Hashem

Hamza³

2021

Open Access Maced J Med Sci

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AIM: This study aimed to assess the effect of different surface treatments on the surface roughness and flexure properties of glass fiber posts “GFPs.” MATERIALS AND METHODS: A total of 40 GFPs were divided into four groups (n = 10): GC – no surface treatment (control), GSB – sandblasted, GHF – hydrofluoric acid etched, and GL – Er: YAG laser irradiated. Surface roughness was detected using surface profilometer and the 3-points bending flexural test measured flexural strength and elastic modulus. RESULTS: GSB showed the highest mean roughness followed by GHF, then GL, while GC had lowest roughness mean value. The 3 points bending test results were calculated and recorded, GSB exhibited the highest flexure stress (MPa) compared to GHF and GL. Modulus of elasticity (GPa) showed significant differences between the tested groups, GSB showed the highest modulus of elasticity compared to GHF and GL, while GC showed insignificant differences with all tested groups. CONCLUSION: Different surface treatments postulated in this study showed alternations of GFPs surfaces without jeopardizing the mechanical properties of GFPs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties

Hesham

Hashem

Hamza³

2021

Open Access Maced J Med Sci

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“…In our own study, elastic FRC posts showed lower flexural properties than the prefabricated FRC posts [ 45 ]. There were statistically significant differences in fracture loads, flexural modulus and flexural strengths during the three-point test.…”

Section: Discussionmentioning

confidence: 99%

In Vitro Fracture Resistance of Endodontically Treated Premolar Teeth Restored with Prefabricated and Custom-Made Fibre-Reinforced Composite Posts

et al. 2021

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(1) Background: The study aimed to compare and analyse the differences between the features of prefabricated fibre-reinforced composite (FRC) posts and custom-made FRC posts in the form of a tape and confirm the necessity of using FRC posts in teeth treated endodontically in comparison to direct reconstruction with a composite material. (2) Methods: Sixty premolars after endodontic treatment were used. The teeth were divided into four groups (n–15). Group 1: teeth with embedded prefabricated posts (Mirafit White); group 2: teeth with embedded prefabricated posts (Rebilda); group 3 teeth with embedded custom-made posts in the form of a tape (EverStick); group 4: teeth without a post restored with composite material. The compressive strength of the teeth was tested using the Instron-5944 testing machine until the sample broke. The crystal structure of the investigated posts was detected with the X-ray diffractometer (3) Results: During the experiment, the maximum values of forces at which the damage of the restored premolar teeth after endodontic treatment occurred were obtained. The best results were obtained for teeth rebuilt with Rebilda Posts (1119 N), while teeth with cemented Mirafit White posts were the weakest (968N). Teeth without an embedded FRC post, rebuilt only with light-cured composite material, obtained the lowest value—859 N. (4) Conclusions: The use of FRC posts increases the resistance to damage of an endodontically treated tooth when compared to direct restoration with light-cured composite material.

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“…Power analyses were performed, and the sample size was determined following the study in which the fracture resistance of pediatric zirconia crown was assessed. [20] G*Power Software detected the study population based on an effect size of 0.25, and an alpha significance level of 5% (0.05), to achieve an 82% power. e values for each group were determined as 15.…”

Section: Sample Size Determinationmentioning

confidence: 99%

In vitro examination of fracture resistance of 3D-printed resin blocks in different diameters

Topsakal

Aksoy

Duran

2023

APOS

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Objectives: The intraoral use of commercial printable polymers in dental patients is still a challenge due to the unknown physical properties of the materials. The present study aimed to comparably evaluate the maximum load and deflection values of three-dimensional-printed resin blocks in different diameters that can be used intraorally in dental patients. Material and Methods: Forty-five cylindrical resin blocks in diameters of 2 mm (Group 1, n = 15), 3 mm (Group 2, n = 15), and 4 mm (Group 3, n = 15) and lengths of 20 mm were designed and printed. The samples were placed in the universal testing device to conduct the 3-point bending test. According to the Shapiro–Wilk normality test results, Kruskal–Wallis and Mann–Whitney U tests were performed for the statistical analysis. The level of statistical significance was accepted as P < 0.05. Results: The values for the maximum load (N) and deflection (mm) in the study groups were 218.4 ± 31.9, 2.96 ± 0.86 in Group 3; 77.05 ± 61.5, 3.91 ± 0.92 in Group 2; and 19.67 ± 2.63, 4.06 ± 1.02 in Group 1, respectively. The mean values of maximum load for Group 3 were superior to Group 2 (P = 0.020) and Group 1 (P = 0.00). Group 2 revealed higher maximum load results than Group 1 (P = 0.003). The mean values of maximum deflection in Group 3 were lower compared to Group 2 (P = 0.014) and Group 1 (P = 005). Conclusion: The results of this in vitro study encourage the use of resin-printed intraoral appliances in place of conventional treatment modalities.

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The three-point bending test of fiber-reinforced composite root canal posts

Cited by 6 publications

References 0 publications

Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties

Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties

In Vitro Fracture Resistance of Endodontically Treated Premolar Teeth Restored with Prefabricated and Custom-Made Fibre-Reinforced Composite Posts

In vitro examination of fracture resistance of 3D-printed resin blocks in different diameters

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