In Vitro Evaluation of Bond Strength to Dentin of Two Post Systems: Computer-aided Design and Computer-aided Manufacturing Fiber Posts vs Splendor Single Adjustable Post

Guimarães, Maryanna de Souza; Bueno, Carlos Eduardo da Silveira; Martin, Alexandre Sigrist De; Fontana, Carlos Eduardo; Pelegrine, Rina Andréa; Pinheiro, Sérgio Luiz; Rocha, Daniel Guimarães Pedro

doi:10.5005/jp-journals-10024-3325

The Journal of Contemporary Dental Practice

2022

DOI: 10.5005/jp-journals-10024-3325

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In Vitro Evaluation of Bond Strength to Dentin of Two Post Systems: Computer-aided Design and Computer-aided Manufacturing Fiber Posts vs Splendor Single Adjustable Post

Maryanna de Souza Guimarães¹,

Carlos Eduardo da Silveira Bueno²,

Alexandre Sigrist De Martin³

et al.

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2024

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Cited by 3 publications

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Evaluation of the bonding strength of conventional, anatomized, adjustable, and CAD/CAM milled fiberglass posts in weakened endodontically treated roots

Silva,

Aguiar,

Assis

et al. 2024

Braz. Dent. J.

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This study evaluated the bond strength (BS) of conventional, anatomized, adjustable, and CAD/CAM fiberglass post systems. Forty maxillary canine roots were weakened, endodontically treated, and divided into four groups (n=10). A slice from each of the three sections (cervical, middle, apical) of the root canal was subjected to the push-out test and the failure pattern was subsequently analyzed. The most apical slice was subjected to analysis of the cementation line thickness by scanning electron microscopy (SEM). Data regarding the BS and cementation line thickness were subjected to the Shapiro-Wilk normality test followed by the variance and Tukey tests. Data failure patterns were expressed as a percentage and submitted to the chi-square test. Conventional fiberglass posts had the lowest BD compared to the other fiberglass posts (p<0.05). All fiberglass posts exhibited a higher percentage of adhesive failures to dentin. The SEM demonstrated a thicker cementation line for the conventional post compared to the other groups (p<0.05), as well as gaps and voids in the cementing material. The anatomized, adjustable, and CAD/CAM milled fiberglass post systems demonstrated a superior BS and adaptation to the root dentin compared to the conventional fiberglass post.

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Evaluation of the bonding strength of conventional, anatomized, adjustable, and CAD/CAM milled fiberglass posts in weakened endodontically treated roots

Silva,

Aguiar,

Assis

et al. 2024

Braz. Dent. J.

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Evaluation of the Adhesive Strength of Different Types of Fiberglass Posts in Flared and Unflared Canal Roots

Carvalho Martins,

Pedrosa Arantes,

Ferreira Silva

et al. 2024

TODENTJ

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Introduction Fiberglass posts are used in the rehabilitation of endodontically treated teeth, and adaptation to the canal is a determining factor. Objective This study aimed to evaluate the Push-out Bond Strength (PBS) and failure mode of different types of fiberglass posts, associated or not with a fiberglass sleeve (Exacto and Splendor SAP) in different types of canals (enlarged and non-enlarged canals). Method and Materials Forty bovine roots were used, and the samples were divided into four groups (n=10). The canals were instrumented in a standardized manner. The samples were cemented with dual self-adhesive resin cement. The roots were sectioned in the coronal, middle, and apical thirds with a thickness of 1 mm. The Push-out Bond Strength (PBS) test was performed in a universal testing machine (EMIC). Statistical analysis: PBS values were recorded, and data were analyzed using repeated measures, such as ANOVA and Tukey's test. To determine the failure mode, a stereomicroscope with 40× magnification and 2.5D analysis was used. Results SPrFl showed significantly higher bond strength in the coronal third than SPr and Exc. However, SPr, Exc, and ExcFl did not show any differences between them. Furthermore, similar bond strength was observed between SPrFl and ExcFl. The failure mode was not influenced by the post system (p=0.144) or root third (p=0.146). All experimental groups showed a prevalence of adhesive failures (Types I, II, and III). Conclusion The groups that used the Splendor system showed similar results to conventional posts anatomized with resin, but in the middle and apical thirds, there was no statistical difference in PBS. Clinical Significance The results of this laboratory test can help the dentist to answer which types of fiberglass can be used to rehabilitate endodontically treated teeth, ensuring good adhesive resistance and, consequently clinical success.

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Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

Fernandes,

Fidalgo-Pereira,

Edwards

et al. 2024

Materials

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The purpose of the present study was to perform a preliminary analysis of the fitting of different fiber-reinforced composite (GFRC) posts to tooth root canals and determine the resin cement layer thickness. The following GFRC posts were assessed: bundle posts (Rebilda GTTM, VOCO, Germany), sleeve system (SAPTM, Angelus Ind, Brazil), and accessory posts (ReforpinTM, Angelus, Brazil). Twenty-four freshly extracted mandibular single-rooted pre-molars were endodontically treated and divided into six groups, according to the type of GFRC post and resin cement (self-adhesive or conventional dual-cured). Then, specimens were cross-sectioned and inspected by optical microscopy regarding the cement layer thickness and presence of defects such as pores, voids, or fissures were assessed. Bundle and accessory posts revealed a regular distribution of resin cement with a lower number of voids than found with sleeve systems. The sleeve system posts showed poor fitting at the apical portion of the root canals. The type of resin cement did not affect the thickness of the interface, although both bundle and accessory posts allow a better distribution of resin cement and fibers. The present preliminary study reveals interesting insights on the fitting of bundle and accessory posts to root dentin and resin cement layer thickness in oval-shape root canals. The sleeve system posts showed adequate fitting only at the coronal portion of the canals.

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In Vitro Evaluation of Bond Strength to Dentin of Two Post Systems: Computer-aided Design and Computer-aided Manufacturing Fiber Posts vs Splendor Single Adjustable Post

Cited by 3 publications

References 23 publications

Evaluation of the bonding strength of conventional, anatomized, adjustable, and CAD/CAM milled fiberglass posts in weakened endodontically treated roots

Evaluation of the bonding strength of conventional, anatomized, adjustable, and CAD/CAM milled fiberglass posts in weakened endodontically treated roots

Evaluation of the Adhesive Strength of Different Types of Fiberglass Posts in Flared and Unflared Canal Roots

Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

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