RETRACTED: Comparison of adhesive bond strength among fiber reinforced post and core with different cementation techniques: In vitro study

AlHelal, Abdulaziz; AlShehri, Khalid; AlOmairy, Abdullah; AlQahtani, Ibrahim; Tulbah, Huda I.; Al-Qahtani, Amal S.; Naseem, Mustafa; Vohra, Fahim; Abduljabbar, Tariq

doi:10.1177/22808000211058867

Cited by 5 publications

(4 citation statements)

References 30 publications

(53 reference statements)

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“…Although a variety of materials and protocols for post cementation have been extensively analyzed, in vitro investigations have provided contradictory findings. Several studies have shown significantly higher bond strength values (Table 1) for self-adhesive luting cement [37][38][39][41][42][43][44][45]51,52], while others have shown comparable behaviors among the adhesive systems available [22,46]. In fact, it has been reported that the composition of the self-adhesive resin cement favors a positive performance, due to a greater moisture tolerance than self-etching cement for instance [38,42].…”

Section: Cementationmentioning

confidence: 99%

Current Insights on Fiber Posts: A Narrative Review of Laboratory and Clinical Studies

de Morais,

Butler,

Santos

2023

Dentistry Journal

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Purpose: The aim of this study was to review the literature related to the clinical performance and laboratory findings regarding fiber posts, as well as the cementation technique employed with their use. Materials and Methods: A literature search was performed using an electronic database, PubMed/Medline, between 2010 and 2023. The terms used were “intra coronal post, fiber post, post cementation, and post length”. Titles and abstracts were initially screened, and a full-text assessment was conducted for those that fulfilled the inclusion criteria. The reference list of the collected papers was also screened for further relevant citations. Results: In this work, 135 potentially eligible studies were analyzed. Titles and abstracts of 90 studies followed the inclusion criteria and were selected for a full-text assessment, resulting in 50 studies selected. Moreover, additional studies from relevant citations were included, totaling 57 studies. Conclusion: According to the laboratory and clinical studies revised, the survival rate between fiber and prefabricated and cast metal posts was similar, and failures were mainly related to the loss of retention. The intra-canal post length of less than two-thirds of the root length presented successful results when ferrule was present. Furthermore, the ferrule increased the longevity of teeth restored with fiber posts. Additionally, the use of a surface treatment protocol for fiber posts and the adhesive cementation technique both contributed to the clinical success and longevity of the intra-canal post.

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Section: Cementationmentioning

confidence: 99%

Current Insights on Fiber Posts: A Narrative Review of Laboratory and Clinical Studies

de Morais,

Butler,

Santos

2023

Dentistry Journal

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“…However, glass fiber posts adhesively cemented into root canals, with a modulus of elasticity similar to the dentin, provide greater flexibility to endodontically treated teeth when subjected to occlusal forces and improve the homogeneous distribution of stress at the post-cement-dentin interface and along the radicular surface [9][10][11][12][13][14][15]. The adhesive procedure of luting the fiber posts into root canals using resin-based cements with similar mechanical properties makes the entire complex behave as a homogeneous entity during functions, preventing fracture [16,17].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Fiber Post Length on the Fracture Strength of Endodontically Treated Teeth

Marinescu,

Abuabboud,

Zimbru

et al. 2023

Medicina

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Background and Objectives: Although fiber posts are widely used in the restoration of endodontically treated teeth (ETT), their ideal cementation depth into the root canal is still debated in literature. The aim of the present study was to evaluate whether the different intra-radicular insertion lengths of the fiber posts influence the fracture strength of ETT. Materials and Methods: A total of 10 permanent human lower incisors with straight roots of similar length and volume extracted for periodontal reason were sectioned 2 mm above the cement–enamel junction (CEJ) to a total length of 18 mm and endodontically treated in the same manner, then randomly divided into two groups of five each (Groups 1 and 2, n = 5). Two sound incisors, with no endodontic treatment, were used as the control group (Group 3, n = 2). After one week of storage in a humid environment, spaces for fiber post no. 1 (Reforpost, Angelus, Londrina, PR, Brazil) were prepared in the first two groups at a depth of 5 mm (Group 1) and 7 mm (Group 2), and the fiber posts were adhesively cemented using self-adhesive resin cement (Maxcem Elite, Kerr GmbH, Herzogenrath, Germany). After 7 days, the samples were vertically positioned and fixed in a self-curing transparent acrylic resin, up to 2 mm below the CEJ level, and mechanically tested in compression after another week of storage using a displacement-controlled testing machine up to each sample’s fracture. The force–displacement curves were recorded for each sample, the means were calculated for each group and a statistical comparative analysis between groups was conducted. Results: Although no statistically significant differences between groups were observed, the highest mean fracture force (N) was recorded in Group 2 (1099.41 ± 481.89) in comparison to Group 1 (985.09 ± 330.28), even when compared to the sound, non-treated teeth (1045.69 ± 146.19). Conclusions: Within the limitations of this in vitro study, teeth where fiber posts were placed deeper into the root canal (7 mm) recorded slightly higher fracture forces in comparison with shorter lengths (5 mm). However, similar biomechanical performances obtained in the mechanical tests showed no statistical differences between the 7 mm and the 5 mm inserted posts.

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“…Furthermore, a clinician must be able to choose the most adequate restorative approach to restore endodontically treated teeth (ETT), as these latter become more vulnerable to fracture than vital teeth [4]. Indeed, during endodontic treatments, a great amount of dental tissue may be removed, especially due to the preparation and disinfection steps; this may represent the key cause for the tooth structure to become weak [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…However, some of these materials, such as metal or ceramic, may increase the risk of fracture in the remaining tooth structure due to their high modulus of elasticity, and they may produce gray discoloration of the crown [18]. Conversely, fiberglass postand-core systems present a modulus of elasticity similar to that of dentin, which may provide favorable results in terms of biomechanical and aesthetic properties [5,23]. PaC systems can be manufactured in different angulations, sizes, and shapes with high precision and efficiency using CAD/CAM technology [23].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength and Porosity Evaluation of Innovative Bidirectional Spiral Winding Fiber Reinforced Composites

Kharouf

Sauro

Hardan

et al. 2022

JCM

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The aim of this in vitro study was to investigate the compressive strength and the bulk porosity of a bidirectional (bFRC) and an experimental bidirectional spiral winding reinforced fiber composite (bswFRC). Cylindrical-shape specimens were prepared for each material group and processed for the evaluation of compressive strength after different storage conditions (dry, 1 and 3 months) in distilled water at 37 °C. The specimens were also assessed for the degree of bulk porosity through X-ray tomography. A scanning electron microscope (SEM) was used to determine the fracture mode after a compressive strength test. Data were statistically analyzed using Two-Way Analysis of Variance (ANOVA). A significantly lower compressive strength was obtained in dry conditions, and after 1 month of water immersion, with the specimens created with bFRC compared to those made with bswFRC (p < 0.05). No significant difference (p > 0.05) was found between the two groups after 3 months of water immersion. However, the presence of water jeopardized significantly the compressive strength of bswFRC after water storage. The type of fracture was clearly different between the two groups; bswFRC showed a brutal fracture, whilst bFRC demonstrated a shear fracture. The bswFRC demonstrated higher pore volume density than bFRC. In conclusion, bswFRC is characterized by greater compressive strength compared to bFRC in dry conditions, but water-aging can significantly decrease the mechanical properties of such an innovative FRC. Therefore, both the novel bidirectional spiral winding reinforced fiber composites (bswFRC) and the bidirectional fiber reinforced composites (bFRC) might represent suitable materials for the production of post-and-core systems via CAD/CAM technology. These findings suggest that both FRC materials have the potential to strengthen the endodontically treated teeth.

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RETRACTED: Comparison of adhesive bond strength among fiber reinforced post and core with different cementation techniques: In vitro study

Cited by 5 publications

References 30 publications

Current Insights on Fiber Posts: A Narrative Review of Laboratory and Clinical Studies

Current Insights on Fiber Posts: A Narrative Review of Laboratory and Clinical Studies

Influence of the Fiber Post Length on the Fracture Strength of Endodontically Treated Teeth

Compressive Strength and Porosity Evaluation of Innovative Bidirectional Spiral Winding Fiber Reinforced Composites

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