scholarly journals Effect of surface treatments on push-out bond strength of calcium silicate-based cements to fiber posts

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Amr M. Elnaghy ◽  
Ayman Mandorah ◽  
Ali H. Hassan ◽  
Alaa Elshazli ◽  
Shaymaa Elsaka
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Glass Fiber ◽  
Calcium Silicate ◽  
Surface Treatments ◽  
The Other ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Effect Of Surface

Abstract Background To evaluate the effect of surface treatments on the push-out bond strength of Biodentine (BD) and white mineral trioxide aggregate (WMTA) to fiber posts. Methods Two brands of fiber posts were used: Reblida post; RP and RelyX post; RX. Each type of post (n = 80/group) was divided into four groups (n = 20/group) and exposed to surface treatment as follows: Control (no treatment), sandblasting (SB), hydrofluoric acid (HF), and TiF4 4 wt/v%. Each group was further subdivided into two subgroups (n = 10/subgroup) based on the type of CSCs used as follows: Subgroup A: BD and Subgroup B: WMTA. Push-out bond strength of BD and WMTA to glass fiber posts was assessed. Data were statistically analyzed using three-way ANOVA and Tukey’s test. A Weibull analysis was performed on the push-out bond strength data. Results BD showed higher bond strength than WMTA (P < 0.001). The push-out bond strength for posts treated with TiF4 4 wt/v% showed greater bond strength than the other surface treatments (P < 0.05). The BD/RP-TiF4 4 wt/v% showed the greater characteristic bond strength (σ0) (15.93) compared with the other groups. Surface treatments modified the surface topography of glass fiber posts. Conclusions The BD/RP-TiF4 4 wt/v% showed greater bond strength compared with the other groups. The TiF4 4 wt/v% surface treatment enhanced the bond strength of BD and WMTA to glass fiber posts than the other treatments. Surface treatment of fiber post with TiF4 4 wt/v% could be used to improve the bond strength with calcium silicate-based cements.

scholarly journals Effect of Surface Treatments on Push-out Bond Strength of Calcium Silicate-based Cements to Fiber Posts

2020 ◽  
Author(s):  
Amr Elnaghy ◽  
Ayman Mandorah ◽  
Ali Hassan ◽  
Alaa Elshazli ◽  
Shaymaa Elsaka
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Glass Fiber ◽  
Calcium Silicate ◽  
Surface Treatments ◽  
The Other ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Effect Of Surface

Abstract Background: To evaluate the effect of surface treatments on the push-out bond strength of Biodentine (BD) and white mineral trioxide aggregate (WMTA) to fiber posts. Methods: Two brands of fiber posts were used: Reblida post; RP and RelyX post; RX. Each type of post was divided into four groups and exposed to surface treatment as follows: Control (no treatment), sandblasting (SB), hydrofluoric acid (HF), and TiF4 4 wt/v%. Push-out bond strength of BD and WMTA to glass fiber posts was assessed. Data were statistically analyzed. Results: BD showed higher bond strength than WMTA (P < 0.001). The push-out bond strength for posts treated with TiF4 4 wt/v% showed greater bond strength than the other surface treatments (P < 0.05). The BD/RP-TiF4 4 wt/v% showed the greater characteristic bond strength (σ0) (15.93) compared with the other groups. Conclusions: The BD/RP-TiF4 4 wt/v% showed greater bond strength compared with the other groups. The TiF4 4 wt/v% surface treatment enhanced the bond strength of BD and WMTA to glass fiber posts than the other treatments. Surface treatment of fiber post with TiF4 4 wt/v% could be used to improve the bond strength with calcium silicate-based cements.

scholarly journals Effect of Various Surface Treatments on Push-out Strength of Glass Fiber Posts–An In Vitro Study

2018 ◽  
Vol 06 (01) ◽  
pp. 028-033
Author(s):  
Navjot Kaur ◽  
Manjit Kumar ◽  
Amrit Khosla ◽  
Ritu Batra ◽  
Sumit Katoch
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Surface Treatments ◽  
Fiber Posts ◽  
Silane Coupling ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Agent Group

Abstract Aim The aim of this study was to investigate push-out bond strength of glass fiber posts after various surface treatments and to investigate push-out bond strength at different levels of root (coronal, middle, apical). Materials and Methods Forty extracted teeth were selected for study (maxillary anteriors and mandibular premolars). Roots were sectioned 16 mm from apex, endodontically treated and divided into four groups of 10 each based on surface treatment of posts; Group I (Control Group): No treatment of the post, Group II: Post surface were sandblasted and then treatment with silane coupling agent, Group III: Hydrofluoric acid application on the post surface and then treatment with silane coupling agent, Group IV: Post surface treated with 37% phosphoric acid treatment for 1 minute. Posts after various surface treatments were luted. Roots were then cut into three sections coronal, middle, and apical. The push-out test was done to assess push-out bond strength. The data obtained were statistically analyzed. Results Hydrofluoric acid and silane coupling agent treatment had little effect on the bond strength of post. Sandblasting and silane coupling agent was proven to be more effective and improved push-out strength of glass fiber posts followed by phosphoric acid group. Conclusion It was concluded that sandblasting followed by silane coupling agent showed highest bond strength in all parts of the root compared with other surface treatments. Highest push-out strength was found at the coronal level of the root followed by middle and apical level.

CAD/CAM Milled Glass Fiber Posts: Adaptation and Mechanical Behavior in Flared Root Canals

2021 ◽  
Author(s):  
MER Gama ◽  
GS Balbinot ◽  
GC Ferreira ◽  
EG Mota ◽  
VCB Leitune ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Root Canals ◽  
Fiber Posts ◽  
Cad Cam ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Post And Core ◽  
Push Out

SUMMARY This study aimed to evaluate the cementation and mechanical behavior of flared root canals restored with CAD/CAM milled glass fiber post-and-core systems. Sixty-six endodontically treated human canines with a flared root canal were divided into three different groups according to the type of post: GPF received prefabricated posts; GREL received relined glass fiber posts, and GMILLED received CAD/CAM milled glass fiber posts. Cementation was performed with self-adhesive resin cement. The samples were submitted to x-ray microcomputed tomography analysis for the analysis of voids and gaps. The roots were sectioned and submitted to the push-out bond strength test. The load-to-fracture was evaluated in post-and-core systems. GMILLED presented lower void and lower gap volumes when compared to GPF and GREL. On the load-to-fracture test, GREL presented statistically significant higher values than GMILLED. GPF values had no statistically significant difference from the two other groups. On the push-out bond strength test, GPF presented statistically significant lower values when compared to GREL and GMILLED. The most common failure pattern was between dentin and cement in all groups. CAD/CAM milled glass fiber post-and-core systems presented an enhanced adaptation of glass fiber posts to flared root canal systems. Their results were comparable to relined posts in bond strength, while load-to-fracture-results for GMILLED were lower than those for GPF.

scholarly journals Influence of the Resin Cement Thickness on the Push-Out Bond Strength of Glass Fiber Posts

2016 ◽  
Vol 27 (5) ◽  
pp. 592-598 ◽  
Author(s):  
Regina Maria Helen-Cot Marcos ◽  
◽  
Gustavo Ross Kinder ◽  
Edson Alfredo ◽  
Tarcisio Quaranta ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Resin Composite ◽  
Resin Cement ◽  
Distilled Water ◽  
Cement Layer ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Post Space ◽  
Push Out

Abstract The objective of the present study was to evaluate the influence of resin cement thickness on the bond strength of prefabricated and customized glass fiber posts after storage in distilled water. Thirty human uniradicular roots were treated endodontically. The roots were divided into 3 groups: THIN (thin cement layer) - post space preparation with #0.5 drill and cementation of #0.5 post; THICK (thick cement layer) - post space preparation with #1 drill and cementation of #0.5 post; and CUSTOM (customized cement layer) - post space preparation with #1 drill and cementation of a customized post (#0.5 glass fiber posts customized with resin composite). All posts were luted with self-adhesive resin cement. The push-out test was carried out after storage for 24 h and 90 days in distilled water at 37 °C. The data were analyzed with three-way ANOVA and Tukey's test (a=0.05). Bond strengths were significantly higher for CUSTOM (9.37 MPa), than for THIN (7.85 MPa) and THICK (7.07 MPa), which were statistically similar. Considering the thirds, the bond strength varied in the sequence: apical (7.13 MPa) < middle (8.22 MPa) = coronal (8.94 MPa). Bond strength for 24 h storage was significantly higher (8.80 MPa) than for 90-day storage (7.40 MPa). It may be concluded that the thickness of resin cement influenced the bond strength of glass fiber posts. The customized posts presented higher bond strength. Storage in water for 90 days affected negatively the values of bond strength, especially for thick cement layers in the apical third.

Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin

2019 ◽  
Vol 25 ◽  
pp. 376-381 ◽  
Author(s):  
Henrico Badaoui Strazzi Sahyon ◽  
Paloma Pereira da Silva ◽  
Murilo Silva de Oliveira ◽  
Luciano Tavares Angelo Cintra ◽  
Eloi Dezan-Júnior ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Photodynamic Therapy ◽  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Push Out

scholarly journals Influence of the Cement Film Thickness on the Push-Out Bond Strength of Glass Fiber Posts Cemented in Human Root Canals

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Natália Araújo Silva Prado ◽  
Reinaldo de Souza Ferreira ◽  
Marcos Henrique de Pinho Maurício ◽  
Sidnei Paciornik ◽  
Mauro Sayão de Miranda
Keyword(s):  
Bond Strength ◽  
Film Thickness ◽  
Glass Fiber ◽  
Shear Bond Strength ◽  
Root Canals ◽  
Fiber Posts ◽  
Before And After ◽  
Glass Fiber Posts ◽  
Adhesive Cement ◽  
Push Out

The present study evaluated the influence of the cement film thickness on the push-out bond strength of glass fiber posts in the cervical, medium, and apical thirds of root canal spaces. Thirty roots were randomly divided into three groups, according to the fiber post system’s drills: (G1) #2; (G2) #3; (G3) #4. The posts were cemented using a self-adhesive cement, and a small amount of powdered Rhodamine B was used as a stain. Images of both sides of each slice were obtained before and after the push-out test. To determine the cement thickness, a macro routine was developed using the software KS 400. The data were analyzed statistically using Kruskal-Wallis and Dunn’s test. G2 (14.62±5.15 MPa) showed statistically higher bond strength values than G1 (10.04±5.13 MPa) and G3 (7.68±6.14 MPa). All groups presented higher bond strength values in the apical third. The bur diameter significantly influenced the results of the shear bond strength for the push-out test. The slight increase in the cement thickness allowed an increase in the values of shear bond strength when compared to very thin or very thick cement films.

scholarly journals Glass fiber posts

2020 ◽  
Vol 19 ◽  
pp. e207508
Author(s):  
Renata Pereira ◽  
Rodrigo Barros Esteves Lins ◽  
Victória Castelan Rodrigues ◽  
Débora Alves Nunes Leite Lima ◽  
Luís Roberto Marcondes Martins ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Conventional Technique ◽  
Fracture Pattern ◽  
Fiber Posts ◽  
Luting Agent ◽  
Prevalent Fracture ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Electron Microscope Data

Aim: Glass fiber posts are indicated in the rehabilitation of extensively damaged teeth; their cementation represents a critical step in restorative dentistry. The aim of this study was to quantify and compare the push-out bond strength of glass fiber posts cemented by conventional technique, two-step technique with luting agent and two-step technique associating bulk-fill composite and luting agent. Methods: Eighty maxillary bovine incisors were endodontically treated and divided into eight groups (n = 10) according to the luting agent (Rely X ARC and Duo-link) and cementation technique (conventional technique; two-step technique with luting agent; and two-step technique associating bulk-fill composite – Filtek Bulk-fill flow or Surefil SDR flow – and luting agent). Samples were submitted to pushout bond strength test, and the fracture pattern was evaluated through scanning electron microscope. Data were submitted to two-way ANOVA and Tukey’s test (α = 0.05). Results: When Rely X ARC was used, the conventional cementation technique obtained higher bond strength values than the twostep technique associated with Filtek Bulk-fill flow. When Duolink was used, the two-step technique associated with Filtek Bulk-fill flow presented higher bond strength values than the conventional technique. The most prevalent fracture patterns were adhesive between luting agent and dentin, and adhesive between bulk-fill composite and dentin. Conclusion: Two-step cementation technique associated with bulk-fill composite may be promising depending on the luting agent used.

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