Dataset Information

Micro-shear bond strength of different calcium silicate materials to bulk-fill composite.

ABSTRACT:

Introduction

This study aimed to compare the micro-shear bond strength (µSBS) performances of two resin-based calcium silicate-based cement (CSC) (TheraCal PT and TheraCal LC), Biodentine, and two modified-MTA CSC materials (NeoMTA 2 and BioMTA+) to bulk-fill restorative material.

Materials and methods

Fifty 3D printed cylindrical resin blocks with a central hole were used (2 mm in depth and 4 mm in diameter). CSCs were placed in the holes (per each group n = 10) and incubated for 24 h. Cylindrical polyethylene molds (2 mm in height and diameter) were used to place the bulk-fill restorative materials on the CSCs and polymerize for 20 s. Then, all specimens were incubated for 24 h at 37 °C at a humidity of 100%. Specimen's µSBSs were determined with a universal testing machine. Data were analyzed with one-way ANOVA (Welch) and Tamhane test.

Results

Statistically higher µSBS was found for TheraCal PT (29.91 ± 6.13 MPa) (p < 0.05) respect to all the other materials tested. TheraCal LC (20.23 ± 6.32 MPa) (p > 0.05) reported higher µSBS than NeoMTA 2 (11.49 ± 5.78 MPa) and BioMTA+ (6.45 ± 1.89 MPa) (p < 0.05). There was no statistical difference among TheraCal LC, NeoMTA 2 and Biodentine (15.23 ± 7.37 MPa) and between NeoMTA 2 and BioMTA+ (p > 0.05).

Conclusion

Choosing TheraCal PT as the pulp capping material may increase the adhesion and µSBS to the bulk-fill composite superstructure and sealing ability.

SUBMITTER: Falakaloglu S

PROVIDER: S-EPMC10066686 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Publications

Micro-shear bond strength of different calcium silicate materials to bulk-fill composite.

Falakaloğlu Seda S Yeniçeri Özata Merve M Plotino Gianluca G

PeerJ 20230329

<h4>Introduction</h4>This study aimed to compare the micro-shear bond strength (µSBS) performances of two resin-based calcium silicate-based cement (CSC) (TheraCal PT and TheraCal LC), Biodentine, and two modified-MTA CSC materials (NeoMTA 2 and BioMTA+) to bulk-fill restorative material.<h4>Materials and methods</h4>Fifty 3D printed cylindrical resin blocks with a central hole were used (2 mm in depth and 4 mm in diameter). CSCs were placed in the holes (per each group <i>n</i> = 10) and incuba ...[more]

PMID: 37013141

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Project description:ObjectivesThe objective of this in vitro study was to evaluate whether a reduced phosphoric acid etching time would have an impact on the microtensile bond strength (µTBS) of different universal adhesives to dentin using a bulk-fill composite.MethodsForty-eight freshly extracted non-carious human molars were immersed in acrylic resin and cut to a height of 4 mm from the highest tubercle crest towards the cervical region. Dentin surfaces were subjected to 37% phosphoric acid pretreatment for 0, 3, or 15 s (s), rinsed with water for 20 s and gently dried, and wet-bonded. Two universal adhesives (Single Bond Universal, 3 M-ESPE; Adhese Universal, Ivoclar Vivadent) were used in this study. The Tofflemire matrix was added to each tooth, and a bulk-fill resin composite (Tetric EvoCeram Bulk-Fill, Ivoclar Vivadent) with a thickness of 5 mm was applied. The tooth composite blocks were cured using a light-emitting diode unit for either 20-40 s. Twelve groups were included (four teeth per group). All samples were immersed in distilled water for 24 h at 37°C. The samples were sectioned under water cooling to obtain multiple sticks approximately 1.0 × 1.0 × 8 mm3 in size using a non-trimming technique with water cooling. The µTBS test was performed (n = 20 sticks for each group). The data were analysed via a Welch analysis of variance (ANOVA) and the Games-Howell post hoc test (SPSS 23.0). The interactions between the three factors were analysed with a three-way ANOVA.ResultsSignificant differences were observed among the experimental groups (p < 0.05). Both adhesives exhibited the highest bond-strength values in the groups for which acid was applied to the dentin for 3 s and the composite resin was light-cured for 40 s, resulting in statistically significantly higher values for these two groups compared with the other groups (p < 0.05).ConclusionReducing the etching time to 3 s compared to the traditional etching time of 15 s increased the micro-tensile bond strength of the bulk-fill composite to dentin using universal adhesives.

Project description:BackgroundOnce the chemo-mechanical preparation of root canals is finished, achieving a complete seal of the root canal system becomes crucial in determining the long-term success of endodontic treatment. The important goals of root canal obturation are to minimize leakage and achieve an adequate seal. Thus, a material that possesses satisfactory mechanical characteristics, is biocompatible, and has the ability to penetrate the dentine tubules adequately is needed.AimThis study aimed to compare the penetrability and bond strength between two calcium silicate-based sealers and an epoxy resin-based sealer, as well as examine the relationship between penetrability and bond strength for the different sealers.Method and materialsThirty-nine recently extracted single-rooted human premolar teeth were instrumented and divided evenly into three groups (n = 13), according to the sealer used for obturation: AH Plus Jet, EndoSequence, and AH Plus Bioceramic Sealer. Three teeth (30 slices) were randomly selected out of each for analysis using confocal laser scanning microscopy to assess penetrability. The remaining ten teeth (90 slices) in each group were subject to push-out tests using a universal testing machine. All teeth were sectioned into nine transverse slices of 0.9 mm thickness for their respective tests (apical, middle, coronal).ResultsAH Plus Jet exhibited significantly lower penetrability and significantly higher bond strength compared to EndoSequence BC sealer (p = 0.002) and AH Plus Bioceramic Sealer (p = 0.006). There was no significant difference between EndoSequence BC sealer and AH Plus Bioceramic Sealer in terms of either penetrability or bond strength. No correlation was found between penetrability and bond strength.ConclusionsWithin the limitation of this study and regardless of the location in the canal, the bioceramic based root canal sealers appeared to perform better than the epoxy resin-based sealer in terms of dentinal penetration rate. Further studies are required to compare other biomechanical properties of bioceramic sealers including setting characteristics and bacterial leakage.

Dataset Information

Micro-shear bond strength of different calcium silicate materials to bulk-fill composite.

Introduction

Materials and methods

Results

Conclusion

Publications

Micro-shear bond strength of different calcium silicate materials to bulk-fill composite.

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