Effect of Mechanical Cycling on the Push-out Bond Strength of Fiber Posts Adhesively Bonded to Human Root Dentin

2007 ◽  
Vol 32 (6) ◽  
pp. 579-588 ◽  
Author(s):  
L. F. Valandro ◽  
P. Baldissara ◽  
G. A. Galhano ◽  
R. M. Melo ◽  
A. Mallmann ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Extended Period ◽  
Adhesively Bonded ◽  
Mechanical Cycling ◽  
Fiber Posts ◽  
Root Dentin ◽  
Push Out ◽  
Retention Strength

Clinical Relevance When adhesively cemented, tested fiber posts are fatigue resistant and appear to have no affect on bond strength to root dentin. Thus, the retention strength of these fiber posts could be maintained for an extended period; however, further studies should be conducted.

The Influence of Time and Cement Type on Push-Out Bond Strength of Fiber Posts to Root Dentin

2011 ◽  
Vol 36 (6) ◽  
pp. 643-648 ◽  
Author(s):  
AA Leme ◽  
M Coutinho ◽  
AF Insaurralde ◽  
PMC Scaffa ◽  
LM da Silva
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Resin Cement ◽  
Cement Type ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Etch And Rinse ◽  
Root Dentin ◽  
Adhesive Resin Cement ◽  
Push Out

Clinical Relevance A self-adhesive resin cement can provide a significantly stronger bond than a three-step etch-and-rinse adhesive and resin cement when used to lute fiber posts.

scholarly journals Influence of Different Conditioning Treatments on The Bond Integrity of Root Dentin to rGO Infiltrated Dentin Adhesive. SEM, EDX, FTIR and MicroRaman Study

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1555
Author(s):  
Firas Alqarawi ◽  
Mazen Alkahtany ◽  
Khalid Almadi ◽  
Afnan Gassem ◽  
Faris Alshahrani ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Bond Strength ◽  
Strength Test ◽  
Control Group ◽  
Micro Raman Spectroscopy ◽  
Fiber Posts ◽  
Root Canal Disinfection ◽  
Reduced Graphene ◽  
Root Dentin ◽  
Push Out

The present study aimed to synthesize and equate the mechanical properties and dentin interaction of two adhesives; experimental adhesive (EA) and 5 wt.% reduced graphene oxide rGO) containing adhesive. Scanning electron microscopy (SEM)-Energy-dispersive X-ray spectroscopy (EDX), Micro-Raman spectroscopy, push-out bond strength test, and Fourier Transform Infrared (FTIR) spectroscopy were employed to study nano-bond strength, degree of conversion (DC), and adhesive-dentin interaction. The EA was prepared, and rGO particles were added to produce two adhesive groups, EA-rGO-0% (control) and rGO-5%. The canals of sixty roots were shaped and prepared, and fiber posts were cemented. The specimens were further alienated into groups based on the root canal disinfection technique, including 2.5% sodium hypochlorite (NaOCl), Photodynamic therapy (PDT), and ER-CR-YSGG laser (ECYL). The rGO nanoparticles were flake-shaped, and EDX confirmed the presence of carbon (C). Micro-Raman spectroscopy revealed distinct peaks for graphene. Push-out bond strength test demonstrated highest values for the EA-rGO-0% group after NaOCl and PDT conditioning whereas, rGO-5% showed higher values after ECYL conditioning. EA-rGO-0% presented greater DC than rGO-5% adhesive. The rGO-5% adhesive demonstrated comparable push-out bond strength and rheological properties to the controls. The rGO-5% demonstrated acceptable DC (although lower than control group), appropriate dentin interaction, and resin tag establishment.

scholarly journals Effect of cement type and thickness on push-out bond strength of fiber posts

2018 ◽  
Vol 12 (4) ◽  
pp. 277-282
Author(s):  
Farzaneh Farid ◽  
Khadijeh Rostami ◽  
Sareh Habibzadeh ◽  
MohammadJavad Kharazifard
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Test Results ◽  
Resin Cements ◽  
Fiber Posts ◽  
Significant Difference ◽  
Root Dentin ◽  
Group 2 ◽  
Self Etch ◽  
Push Out

Background. This study investigated the effect of the thickness of two resin cements on push-out bond strength of fiber posts to root dentin. Methods. Sixty decoronated single-rooted teeth were endodontically treated. The specimens were then randomly allocated to two groups (n=30); group 1: drill size 90 w, matching the size of fiber posts used; group 2: drill size 110, larger than the posts. The specimens in each group were divided into 2 subgroups (n=15); subgroup SE, in which the posts were cemented with self-etch Panavia F2.0 and subgroup SA, in which self-adhesive Panavia cement was used. After 72 hours, 2 slices with 1 mm of thickness were prepared from the mid-root of each specimen. Push-out bond strength test was performed in a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with two-way ANOVA and t-test. Results. The mean bond strengths of the posts cemented in matched-size spaces for SE and SA groups were 4.02±1.6 and 4.12±2.3 MPa, respectively. For posts cemented in oversized spaces, the values were 4.9±2.3 and 2.8±1.3 MPa, respectively. In matched-size spaces, there was no significant difference between the two groups. Conclusion. The results of this study suggested that increasing the cement thickness would reduce the bond strength of fiber posts to root dentin when self-adhesive cements are used; however, self-etch adhesives were not affected.

scholarly journals Influence of sodium hypochlorite/etidronic acid combination and SmearOFF on push-out bond strength of fiber posts to root dentin

2020 ◽  
Vol 39 (4) ◽  
pp. 554-562
Author(s):  
Cevat Emre ERİK ◽  
Bulem ÜREYEN KAYA ◽  
Murat MADEN ◽  
Ekim Onur ORHAN
Keyword(s):  
Bond Strength ◽  
Sodium Hypochlorite ◽  
Etidronic Acid ◽  
Fiber Posts ◽  
Root Dentin ◽  
Push Out

scholarly journals Effect of different root dentin pretreatment protocols on the bond strength of fiber posts cemented with core buildup material

2019 ◽  
Vol 22 (1) ◽  
pp. Process
Author(s):  
Rowaida Naeem ◽  
Maged Zohdy ◽  
Tarik Salah
Keyword(s):  
Bond Strength ◽  
Failure Modes ◽  
Testing Machine ◽  
Calculated Data ◽  
Core Material ◽  
Fiber Posts ◽  
Stereo Microscope ◽  
Root Dentin ◽  
Self Etch ◽  
Push Out

Objective: The purpose of the study was to evaluate the push out bond strength of fiber posts -after cementaion with core build up material and dentin pretreatment using different adhesive protocols- in different root regions. Material and Methods: 28 endodonticaly treated human premolars were divided into 4 groups. The post spaces were treated with 1 of 4 different dentin bonding protocols: total etch light cured adhesive, solobond m; total etch dual cured adhesive, Excite f DSC; self-etching light cured adhesive, single bond universal; or self-etching dual cured adhesive, futura bond dc. Fiber posts, were luted with dual cured core material. The roots were cut into 2-mm-thick sections, in cervical, middle, and apical regions. Push-out tests were performed with a universal testing machine, and bond strength values (MPa) were calculated. Data were analyzed with 1- and 2-way analysis of variance and Tukey multiple comparison tests (a=.05). Failure modes were examined under stereo microscope. Results: The highest mean bond strength values were obtained for self-etch dual cured adhesive, (9.69 MPa). The Total etch light cured adhesive (2.81 MPa) showed the lowest bond strength. Self-etch light-polymerized and total etch dual-polymerized adhesives provided similar bond strengths (5.37, 5.72 respectively). The regional bond strength values were reduced significantly in apical post space (P<0.01). The most predominant failure type was mixed failure followed by adhesive failure. Conclusion: Dentin pretreatment using self-etch dual cured adhesives prior to fiber posts cementation offers a high bond strength. While using total-etch light cured adhesives is not recommended due to the low bonding quality. KeywordsDentin; Bond strength; Fiber posts; Core buildup material; Adhesive protocols; Pretreatment.

Effect of the frequency of mechanical pulses for fatigue aging testing on push-out bond strength between glass fiber posts and root dentin

2016 ◽  
Vol 30 (11) ◽  
pp. 1243-1252 ◽  
Author(s):  
Marília Pivetta Rippe ◽  
Vinícius Felipe Wandscher ◽  
César Dalmolin Bergoli ◽  
Paolo Baldissara ◽  
Mutlu Özcan ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Root Dentin ◽  
Push Out

scholarly journals Bond strength of glass fiber posts submitted to different luting protocols

2016 ◽  
Vol 31 (2) ◽  
pp. 77
Author(s):  
Fabiano Vieira De Landa ◽  
Jean Soares Miranda ◽  
Rodrigo Furtado De Carvalho ◽  
Estevão Tomomitsu Kimpara ◽  
Fabíola Pessôa Pereira Leite
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Testing Machine ◽  
Dentinal Tubules ◽  
Fiber Posts ◽  
Cutting Machine ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Root Dentin ◽  
Push Out

Objective: evaluate the effect of different luting protocols on the bond strength of glass fiber posts.Methods: Forty human canine teeth were randomly divided into four groups: Relyx U100/Endofill (R+E), Panavia F2.0/EndoFill (P+E), Relyx U100/Sealer 26 (R+S), Panavia F2.0/Sealer 26 (P+S). After the luting procedures, the samples were subjected to thermocycling (6.000 cycles; at 5±1 ºC and 55±1 ºC) and then sectioned in a precision cutting machine (Isomet 1000 Precision Saw) into 4 cuts of 2mm regarding to different deepness: Apical, Medium Apical, Medium Coronal, and Coronal. Next, the cuts were submitted to push-out test in a universal testing machine (EMIC) with load cell of 50N, at crosshead speed of 0.5mm/min.Results: They were obtained according to the different luting deepness (p≥0.05) (MPa): 1) apical – R+E (1.35±1.28), P+E (2.70±0.89), R+S (3.89±0.70), P+S (4.30±1.02); 2) medium apical – R+E (1.38±1.28), P+E (2.98±1.43), R+S (4.02±1.14), P+S (4.49±1.82); 3) medium coronal – R+E (2.46±0.73), P+E (3.72±0.78), R+S (4.85±0.71), P+S (6.14±0.73); 4) coronal R+E (5.59±1.08), P+E (5.74±1.06), R+S (6.71±1.07), P+S (7.40±1.51).Conclusion: There was a relationship between the luting protocol of the glass fiber post and the endodontic cement. Eugenol plays an important role inside the dentinal tubules by interfering negatively in the bond strength to root dentin.

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