Restorative Dentistry & Endodontics

Research Articles

Effect of irrigation protocols on smear layer removal, bond strength and nanoleakage of fiber posts using a self-adhesive resin cement: Rodrigo Stadler Alessi, Renata Terumi Jitumori, Bruna Fortes Bittencourt, Giovana Mongruel Gomes, João Carlos Gomes; Restor Dent Endod 2023;48(3):e28. Published online July 27, 2023; DOI: https://doi.org/10.5395/rde.2023.48.e28

Objectives

This study aimed to investigate the effect of the application method of 2% chlorhexidine (CHX) and its influence on the adhesion of fiberglass posts cemented with a self-adhesive resin cement.

Materials and Methods

Sixty human mandibular premolars were endodontically treated and divided into 5 groups (n = 12), according to the canal irrigant and its application method: 2 groups with conventional syringe irrigation (CSI)—2.5% sodium hypochlorite (NaOCl) (control) and 2% CHX— and 3 groups with 2% CHX irrigation/activation—by passive ultrasonic irrigation (PUI), Easy Clean file, and XP-Endo Finisher file. Two roots per group were evaluated for smear layer (SL) removal by scanning electron microscopy. For other roots, fiber posts were luted using a self-adhesive resin cement. The roots were sectioned into 6 slices for push-out bond strength (BS) (7/group) and nanoleakage (NL) (3/group). Data from SL removal were submitted to Kruskal-Wallis and Student-Newman-Keuls tests (α = 0.05). Data from BS and NL were evaluated by 2-way analysis of variance and Tukey’s test (α = 0.05).

Results

For SL removal and BS, the CHX irrigation/activation promoted better values than CSI with CHX (p < 0.05), but it was not significantly different from CSI with NaOCl (p > 0.05). For NL, the lowest values were obtained by the chlorhexidine irrigation/activation groups (p < 0.05).

Conclusions

Active 2% CHX irrigation can be used to improve the post space cleaning and adhesion before fiber post cementation with self-adhesive resin cements.

Citations

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Laser‐Activated Irrigation via Photon‐Induced Photoacoustic Streaming and Shock Wave Enhanced Emission on Smear Layer Removal Efficacy, Pushout Bond Strength, and Sealer Adaptation: A SEM Assessment
Basil Almutairi, Fahad Alkhudhairy
Microscopy Research and Technique.2025;[Epub] CrossRef
Evaluation of Microleakage Using Different Luting Cements in Kedo Zirconia Crowns: An In Vitro Assessment
Guru Vishnu, Ganesh Jeevanandan
Cureus.2024;[Epub] CrossRef

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Effect of adhesive luting on the fracture resistance of zirconia compared to that of composite resin and lithium disilicate glass ceramic: Myung-Jin Lim, Kwang-Won Lee; Restor Dent Endod 2017;42(1):1-8. Published online October 14, 2016; DOI: https://doi.org/10.5395/rde.2017.42.1.1

Abstract PDF PubReader ePub

Objectives

The purpose of this study was to evaluate the effect of adhesive luting on the fracture resistance of zirconia compared to that of a composite resin and a lithium disilicate glass ceramic.

Materials and Methods

The specimens (dimension: 2 mm × 2 mm × 25 mm) of the composite resin, lithium disilicate glass ceramic, and yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) were prepared. These were then divided into nine groups: three non-luting groups, three non-adhesive luting groups, and three adhesive luting groups, for each restorative material. In the non-luting groups, specimens were placed on the bovine tooth without any luting agents. In the non-adhesive luting groups, only zinc phosphate cement was used for luting the specimen to the bovine tooth. In the adhesive luting groups, specimens were pretreated, and the adhesive luting procedure was performed using a self-adhesive resin cement. For all the groups, a flexural test was performed using universal testing machine, in which the fracture resistance was measured by recording the force at which the specimen was fractured.

Results

The fracture resistance after adhesive luting increased by approximately 29% in the case of the composite resin, 26% in the case of the lithium disilicate glass ceramic, and only 2% in the case of Y-TZP as compared to non-adhesive luting.

Conclusions

The fracture resistance of Y-TZP did not increased significantly after adhesive luting as compared to that of the composite resin and the lithium disilicate glass ceramic.

Citations

Citations to this article as recorded by

Cyclic fatigue of a repaired 4 YSZ ceramic: Effect of the repair protocol on the adhesive and mechanical behavior
Pablo Machado Soares, Lucas Saldanha da Rosa, Rafaela Oliveira Pilecco, Gabriel Kalil Rocha Pereira, Amanda Maria de Oliveira Dal Piva, João Paulo Mendes Tribst, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan, Marilia Pivetta Rippe
Heliyon.2024; 10(1): e23709. CrossRef
Effect of wall thickness on shape accuracy of hollow zirconia artificial teeth fabricated by a 3D printer
Hiro Kobayashi, Franz Sebastian Schwindling, Akinori Tasaka, Peter Rammelsberg, Shuichiro Yamashita, Stefan Rues
Journal of Prosthodontic Research.2024;[Epub] CrossRef
Effect of powder air polishing and ultrasonic scaling on the marginal and internal interface (tooth-veneer) of ceramic veneers: an in vitro study
Florian Fuchs, Laura Antonia Mayer, Lena Unterschütz, Dirk Ziebolz, Nadia Oberueck, Ellen Schulz‑Kornas, Sebastian Hahnel, Andreas Koenig
Clinical Oral Investigations.2024;[Epub] CrossRef
Clinical performance of two onlay designs for molars after root canal treatment
Shujiang Chen, Meng Lu, Zhimin Zhu, Wenchuan Chen
Journal of Oral Science.2023; 65(3): 171. CrossRef
Tooth‐cusp preservation with lithium disilicate onlay restorations: A fatigue resistance study
Elizabeth Griffis, Islam Abd Alraheam, Lee Boushell, Terrence Donovan, Dennis Fasbinder, Taiseer A. Sulaiman
Journal of Esthetic and Restorative Dentistry.2022; 34(3): 512. CrossRef
Cyclic fatigue vs static loading for shear bond strength test of lithium disilicate and dentin substrates: A comparison of resin cement viscosities
Kiara Serafini Dapieve, Renan Vaz Machry, Ana Carolina Cadore-Rodrigues, Jessica Klöckner Knorst, Gabriel Kalil Rocha Pereira, Niek De Jager, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan
Dental Materials.2022; 38(12): 1910. CrossRef
Fracture resistance and 3D finite element analysis of machined ceramic crowns bonded to endodontically treated molars with two planes versus flat occlusal preparation designs: an in vitro study
Omnia Nabil, Carl Hany Halim, Ashraf Hassan Mokhtar
F1000Research.2021; 8: 1020. CrossRef
Establishment of optimal variable elastic modulus distribution in the design of full-crown restorations by finite element analysis
Jianghai CHEN, Yutao JIAN, Shumin CHEN, Xiaodong WANG, Li DAO, Ke ZHAO
Dental Materials Journal.2021; 40(6): 1403. CrossRef
Load-bearing capacity of CAD/CAM 3D-printed zirconia, CAD/CAM milled zirconia, and heat-pressed lithium disilicate ultra-thin occlusal veneers on molars
A. Ioannidis, D. Bomze, C.H.F. Hämmerle, J. Hüsler, O. Birrer, S. Mühlemann
Dental Materials.2020; 36(4): e109. CrossRef
Fracture resistance and 3D finite element analysis of machined ceramic crowns bonded to endodontically treated molars with two planes versus flat occlusal preparation designs: an in vitro study
Omnia Nabil, Carl Hany Halim, Ashraf Hassan Mokhtar
F1000Research.2019; 8: 1020. CrossRef
The effect of adhesive failure and defects on the stress distribution in all-ceramic crowns
Yonggang Liu, Yuanzhi Xu, Bo Su, Dwayne Arola, Dongsheng Zhang
Journal of Dentistry.2018; 75: 74. CrossRef

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