Endodontically treated teeth have been traditionally restored with cost-metal posts prior to receiving aesthetic care. Due to the difficulties associated with early posts, resources have been invested to develop biocompatible endodontic posts capable of satisfying functional and aesthetic criteria. These initiatives have resulted in the introduction of carbon-based and glass-fiber posts with translucencies and moduli of elasticity closely approximating that of the dentin for use in adhesive dental procedures. This article demonstrates the rationale and application of translucent glass-fiber posts for the restoration of pulpless teeth.
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In vitro evaluation of antimicrobial photodynamic therapy with photosensitizers and calcium hydroxide on bond strength, chemical composition, and sealing of glass-fiber posts to root dentin.
Lasers Med Sci
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Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry, São Paulo State University - UNESP, Araçatuba, SP, Brazil.
Investigate the impact of antimicrobial photodynamic therapy (aPDT) using different photosensitizers (PSs) such as indocyanine green (IG), curcumin (CC), and methylene blue (MB), with or without intracanal application of calcium hydroxide (CH), on the push-out bond strength of glass-fiber posts (GFPs) to intraradicular dentin, the chemical composition of the root substrate, and the sealing of the adhesive interface across different thirds of intraradicular dentin. A total of 112 bovine teeth underwent biomechanical preparation and were divided into eight experimental groups (n = 14 each): Negative control with deionized water; positive control with deionized water + CH; IG group with indocyanine green and infrared laser; IG + CH group; CC group with curcumin and blue LED; CC + CH group; MB group with methylene blue and red laser; and MB + CH group. The push-out bond strength was measured using a universal testing machine (n = 8), and scanning electron microscopy characterized the fracture patterns.
View Article and Find Full Text PDFFracture resistance of endodontically treated teeth restored with CAD-CAM milled and prefabricated post-and-core systems.
J Prosthodont
January 2025
Department of Prosthodontics, Yeditepe University Faculty of Dentistry, Istanbul, Turkey.
Purpose: To compare the effect of post-and-core material type and production technique on the fracture resistance of teeth.
Materials And Methods: Sixty human maxillary central incisors were used for the study. Root canal treatments were performed, and the post cavities were created.
Efficacy of Canal Disinfectants Temoporfin, Carbon Nanoparticles, and Er: YAG Laser on Martens Hardness, Smear Layer Removal, and Bond Strength of Glass Fiber Posts to Canal Dentin.
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Department of Prosthetic Dental Sciences, College of Dentistry. King Saud University. Riyadh, Saudi Arabia PO Box-60169. Electronic address:
Aim: To investigate the effectiveness of unconventional post space disinfection techniques, specifically Er:YAG laser, Temoporfin, and Carbon Nanoparticles (CNPs), in improving Martens hardness (MH), eliminating the smear layer (SL), and enhancing the push-out bond strength (PBS) of glass fiber posts in canal dentin.
Methods: An in vitro study was conducted utilizing 80 single-rooted extracted human teeth, which were decoronated and subjected to standardized root canal preparation. The teeth were equally distributed into four experimental groups: Group 1 (NaOCl + EDTA), Group 2 (Er: YAG laser + EDTA), Group 3 (Temoporfin + EDTA), and Group 4 (CNPs + EDTA).
Fracture resistance and behavior of endodontically treated maxillary premolars with varying ferrule heights and post numbers: A laboratory study.
J Prosthodont
January 2025
Department of Restorative Dental Science, College of Dentistry, University of Ha'il, Ha'il, Saudi Arabia.
Purpose: To investigate how varying ferrule heights and the number of glass fiber posts affect fracture resistance and behavior of endodontically treated maxillary first premolars with substantial loss of tooth structure.
Materials And Methods: Twenty-four extracted endodontically treated human maxillary first premolars were divided into three groups (n = 8) based on ferrule height and post number. The groups were as follows: premolars of 2 mm ferrule height that were restored with single posts (control group), premolars of 0.
Comparative finite element analyses of stress exerted on the dentin by intraradicular posts.
Braz Dent J
December 2024
Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, MG, Brazil.
Unlabelled: The amount of residual dentin thickness and tooth position in the dental arch is crucial to determine whether an intraradicular post should be used. This study aimed to compare stress distribution on the root dentin of an endodontically treated tooth rehabilitated with CAD/CAM milled glass fiber posts (MP), cast metal posts (CMP), or prefabricated posts (PP) with or without ferrule support, using the finite element method.
Materials And Methods: A human upper central incisor was selected, scanned, and treated endodontically.
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