Use of a Direct Anatomic Post in a Flared Root Canal: A Three-year Follow-up

2016 ◽  
Vol 41 (1) ◽  
pp. E23-E28 ◽  
Author(s):  
GM Gomes ◽  
RV Monte-Alto ◽  
GO Santos ◽  
CK Fai ◽  
AD Loguercio ◽  
...  

SUMMARY The following case report describes the three-year follow-up after rehabilitation of a flared root canal using a direct anatomic post (a resin composite combined with a prefabricated glass fiber post) associated with metal-free ceramic restoration. The report presents the clinical protocol for the fabrication of the posts, which provide an intimate fit to the remaining root and mechanical properties similar to those of the dental structure. These posts serve as an alternative to conventional metal cores.

2016 ◽  
Vol 41 (4) ◽  
pp. 363-369 ◽  
Author(s):  
AFM Cardenas ◽  
FSF Siqueira ◽  
A Davila-Sanchez ◽  
GM Gomes ◽  
A Reis ◽  
...  

SUMMARY Knowledge about the stability of fiber posts cemented in widened canal spaces over time is scarce in the literature. Thus, the purpose of this case report was to evaluate the performance of a direct anatomical post in a widened canal space over the course of four years. The present clinical case describes the rehabilitation of a widened canal space using a direct anatomical post (a resin composite combined with a prefabricated glass fiber post) associated with an all-ceramic crown and other restorative procedures. This technique is easy to perform and may solve some of the problems associated with the cementation of a poorly adapted fiber post in a widened canal space.


2019 ◽  
Vol 30 (4) ◽  
pp. 350-355 ◽  
Author(s):  
Thiago Lopes de Freitas ◽  
Rafael Pino Vitti ◽  
Milton Edson Miranda ◽  
William Cunha Brandt

Abstract The aim of this study was to evaluate the effect of different glass fiber posts (GFPs) diameters on the push-out bond strength to dentin. Forty unirradicular human teeth were endodontically treated and used for cementation of GFPs (White Post DC, FGM) with different diameters (n=10): P1 - ø 1.6 mm coronal x 0.85 mm apical; P2 - ø 1.8 mm coronal x 1.05 mm apical; P5 - ø 1.4 mm coronal x 0.65 mm apical; and PC - customized post number 0.5 with composite resin (Tetric Ceram A2, Ivoclair Vivadent). All GFPs were cemented into the root canal using a dual-curing luting composite (Variolink II, Ivoclar Vivadent). One slice (1.7 mm) of each root third of cemented GFP (cervical, middle, and apical) was submitted to push-out testing. Failure modes of all specimens were classified as: adhesive failure between resin cement and post; adhesive failure between dentin and resin cement; cohesive failure within resin cement, post or dentin; and mixed failure. The data were analyzed with two-way ANOVA and Tukey’s test (a=0.05). The highest bond strength values were presented for the P2 and PC groups. There was no statistically significant difference between the GFP thirds in each group. The groups P2, P5, and PC showed predominantly adhesive failure. For P1, the most prevalent type of failure was adhesive between resin cement and post. It may be concluded that a glass fiber post that is well adapted to the root canal presents higher bond strength values, regardless of GFP third.


Laser Physics ◽  
2009 ◽  
Vol 19 (9) ◽  
pp. 1920-1924 ◽  
Author(s):  
V. R. G. Clavijo ◽  
M. C. Bandéca ◽  
L. R. Calixto ◽  
M. R. Nadalin ◽  
E. G. Saade ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4249
Author(s):  
Alexandre Luiz Souto Borges ◽  
Manassés Tercio Vieira Grangeiro ◽  
Guilherme Schmitt de Andrade ◽  
Renata Marques de Melo ◽  
Kusai Baroudi ◽  
...  

The loss of dental structure caused by endodontic treatment is responsible for a decrease in tooth resistance, which increases susceptibility to fracture. Therefore, it is important that minimally invasive treatments be performed to preserve the dental structure and increase the resistance to fracture of endodontically treated posterior teeth. To evaluate under axial loads, using the finite element method, the stress distribution in endodontically treated molars restored with both transfixed or vertical glass fiber posts (GFP) and resin composite. An endodontically treated molar 3D-model was analyzed using finite element analyses under four different conditions, class II resin composite (G1, control model), vertical glass fiber post (G2), transfixed glass fiber posts (G3) and vertical and transfixed glass fiber posts (G4). Ideal contacts were considered between restoration/resin composite and resin composite/tooth. An axial load (300 N) was applied to the occlusal surface. The resulting tensile stresses were calculated for the enamel and dentin tissue from five different viewports (occlusal, buccal, palatal, mesial and distal views). According to the stress maps, similar stress trends were observed, regardless of the glass fiber post treatment. In addition, for the G1 model (without GFP), a high-stress magnitude can be noticed in the proximal faces of enamel (7.7 to 14 MPa) and dentin (2.1 to 3.3 MPa) tissue. The use of transfixed glass fiber post is not indicated to reduce the stresses, under axial loads, in both enamel and dentin tissue in endodontically treated molar with a class II cavity.


2015 ◽  
Vol 26 (3) ◽  
pp. 211-215 ◽  
Author(s):  
Gustavo Sivieri-Araujo ◽  
Mario Tanomaru-Filho ◽  
Juliane Maria Guerreiro-Tanomaru ◽  
Eduardo Antunes Bortoluzzi ◽  
Érica Gouveia Jorge ◽  
...  

The aim of this study was to evaluate the fracture resistance of simulated immature teeth after different intra-radicular treatments. Crowns and roots of bovine incisors were cut transversally and removed to simulate immature teeth. Root canal preparation and flaring were performed using a bur in crown-apex and apex-crown direction. The samples were distributed into 5 groups (n=10): Positive control (PoC) - no root canal flaring or filling; Negative control (NeC) - teeth were sectioned and their root canals were flared; Direct anatomical glass fiber post (RaP) - #2 Reforpost main glass fiber post relined with composite resin; Double tapered conical glass fiber posts (ExP) - #3 Exacto glass fiber post; and #2 Reforpost main glass fiber + Reforpin accessory glass fiber posts (RrP). In RaP, ExP and RrP, 4.0-mm apical plugs were done with MTA Angelus. The specimens were embedded in polystyrene resin inside cylinders and the periodontal ligament was simulated with a polyether-based impression material. The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135° relative to the long axis of the tooth) in a servo-hydraulic mechanical testing machine MTS 810. Data were subjected to one-way ANOVA and Dunnett's C or Tukey's tests (α=0.05). The control groups (PoC and NeC) showed lower fracture strength than the experimental groups. NeC presented the lowest resistance and ExP presented the highest resistance among the experimental groups. The flaring procedures produced a detrimental effect on the fracture resistance of the bovine teeth. Glass fiber intra-radicular posts increased significantly the fracture resistance of simulated immature teeth.


2012 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Astrid Yudhit ◽  
Rusfian Dayuni Ariski S

Nowadays, glass fiber post and composite resin cores have been used in endodontic treatment for esthetics achievement. The success of this treatment was affected by some factors such as bond strength between post and cores. The aim of this study is to investigate the effect of self etch bonding agent that use as adhesive materials between glass fiber post and resin composite by its bond strength. Totally twenty samples is used in this study, and divided in two groups (n=10 for each group), bonding group agents and without bonding agent group (control). The tensile-shear bond strength tested with Universal Testing Machine. Then, the bond strength values were analyzed statistically with t-test (p≤ 0,05). The result shows that bonds strength values in bonding agent groups were higher than without bonding agent groups. But, there is no significantly different between groups. In conclusion, bonding agent did not have effect on tensile-shear bond strength between glass fiber post and resin composite.


Author(s):  
George Hebert Ruschel ◽  
Érica Alves Gomes ◽  
Yara Terezinha Silva-Sousa ◽  
Rafaela Giedra Pirondi Pinelli ◽  
Manoel Damião Sousa-Neto ◽  
...  

2020 ◽  
Vol Volume 12 ◽  
pp. 17-24 ◽  
Author(s):  
Antonio Libonati ◽  
Virginia Di Taranto ◽  
Gianni Gallusi ◽  
Edoardo Montemurro ◽  
Vincenzo Campanella

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