scholarly journals Evaluation of Bond Strength and Dentinal Tubule Penetration of the Post Luting Cements

2019 ◽  
Vol 4 (3) ◽  
pp. 167-175
Author(s):  
Yelda Paltun ◽  
Sis DARENDELİLER YAMAN
Keyword(s):  
Bond Strength ◽  
Dentinal Tubule ◽  
Luting Cements ◽  
Tubule Penetration

scholarly journals Evaluation of dentinal tubule penetration depth and push-out bond strength of AH 26, BioRoot RCS, and MTA Plus root canal sealers in presence or absence of smear layer

2018 ◽  
Vol 12 (4) ◽  
pp. 294-298 ◽  
Author(s):  
Sevinç Aktemur Türker ◽  
Emel Uzunoğlu ◽  
Nuhan Purali
Keyword(s):  
Bond Strength ◽  
Penetration Depth ◽  
Root Canal ◽  
Smear Layer ◽  
Dentinal Tubule ◽  
Limited Effect ◽  
Gutta Percha ◽  
Tubule Penetration ◽  
Root Canal Sealers ◽  
Push Out

Background.This study compared the effect of smear layer on the penetration depth and push-out bond strength of various root canal sealers. Methods.A total of 90 extracted human mandibular premolars were assigned into 2 groups: smear layer preserved and smear layer removed. Then the roots were further divided into 3 subgroups according to the sealer tested: AH 26, BioRoot RCS and MTA Plus. Obturation was performed with gutta-percha and the relevant sealer was mixed with 0.1% rhodamine B. Three 1-mm-thick slices were obtained from the mid-third area of each root. Two slices were selected for the push-out test and the remaining slice was used to calculate the dentinal tubule penetration depth and percentage. Results.The retention of MTA Plus and BioRoot RCS was higher than that of AH 26 when the smear layer was preserved (P<0.05). BioRoot RCS showed the lowest penetration depth when the smear layer was removed (P<0.05). Conclusion.Dentinal tubule penetration of root canal sealers had a limited effect on their adhesion to root canal wall.

scholarly journals Interfacial Fracture Toughness Comparison of Three Indirect Resin Composites to Dentin and Polyether Ether Ketone Polymer

2020 ◽  
Vol 14 (03) ◽  
pp. 456-461
Author(s):  
Rayhaneh Khalesi ◽  
Mahdi Abbasi ◽  
Zahra Shahidi ◽  
Masoumeh Hasani Tabatabaei ◽  
Zohreh Moradi
Keyword(s):  
Fracture Toughness ◽  
Bond Strength ◽  
Testing Machine ◽  
Composite Resins ◽  
High Wear Resistance ◽  
Luting Cements ◽  
Anterior Teeth ◽  
Polyether Ether Ketone ◽  
Ether Ketone

Abstract Objectives Advances in laboratory composites and their high wear resistance and fracture toughness have resulted in their growing popularity and increasing use for dental restorations. This study sought to assess the fracture toughness of three indirect composites bonded to dental substrate and polyether ether ketone (PEEK) polymer. Materials and Methods This in vitro study was conducted on two groups of dental and polymer substrates. Each substrate was bonded to three indirect composite resins. Sixty blocks (3 × 3 × 12 mm) were made of sound bovine anterior teeth and PEEK polymer. Sixty blocks (3 × 3 × 12 mm) were fabricated of CRIOS (Coltene, Germany), high impact polymer composite (HIPC; Bredent, Germany), and GRADIA (Indirect; GC, Japan) composite resins. Composites were bonded to dentin using Panavia F 2.0 (Kuraray, Japan). For bonding to PEEK, Combo.lign (Bredent) and Visio.Link (Bredent) luting cements were used. In all samples, a single-edge notch was created by a no. 11 surgical blade at the interface. The samples were subjected to 3,500 thermal cycles, and their fracture toughness was measured in a universal testing machine (Zwick/Roell, Germany) by application of four-point flexural load. Statistical Analysis Data were analyzed using one-way analysis of variance, Kruskal–Wallis. Results The fracture toughness of CRIOS–PEEK interface was significantly higher than HIPC–PEEK. The fracture toughness of GRADIA–PEEK was not significantly different from that of HIPC and CRIOS. The fracture toughness of GRADIA–dentin was significantly higher than HIPC–dentin. Conclusion Considering the limitations of this study, GRADIA has the highest bond strength to dentin, while CRIOS shows the highest bond strength to PEEK.

scholarly journals Effect of temporary cements on the shear bond strength of luting cements

2010 ◽  
Vol 18 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Marco Fiori-Júnior ◽  
Wilson Matsumoto ◽  
Raquel Assed Bezerra Silva ◽  
Sizenando Toledo Porto-Neto ◽  
Jaciara Miranda Gomes Silva
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Luting Cements

The Effect of Dentin Desensitizer on Shear Bond Strength of Conventional and Self-adhesive Resin Luting Cements After Aging

2011 ◽  
Vol 36 (5) ◽  
pp. 492-501 ◽  
Author(s):  
B Stawarczyk ◽  
R Hartmann ◽  
L Hartmann ◽  
M Roos ◽  
M Özcan ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Water Storage ◽  
Acrylic Resin ◽  
Luting Cements ◽  
Relyx Unicem ◽  
Aging Conditions ◽  
Post Hoc ◽  
The Impact ◽  
Panavia 21

SUMMARY This study tested the impact of Gluma Desensitizer on the shear bond strength (SBS) of two conventional (RelyX ARC, Panavia 21) and two self-adhesive (RelyX Unicem, G-Cem) resin luting cements after water storage and thermocycling. Human third molars (N=880) were embedded in acrylic resin. The buccal dentin was exposed. Teeth were randomly divided into four main groups, and the following cements were adhered: 1) RelyX ARC, 2) Panavia 21, 3) RelyX Unicem, and 4) G-Cem. In half of the teeth in each group, dentin was treated with Gluma Desensitizer. In the conventional cement groups, the corresponding etchant and adhesive systems were applied. SBS of the cements was tested after 1 hour (initial); at 1, 4, 9, 16, and 25 days of water storage; and at 1, 4, 9, 16, and 25 days of thermocycling. SBS data were analyzed by one-way analysis of variance (ANOVA); this was followed by the post hoc Scheffé test and a t-test. Overall, the highest mean SBS (MPa) was obtained by RelyX ARC (ranging from 14.6 ± 3.9 to 17.6 ± 5.2) and the lowest by Panavia 21 in combination with Gluma Desensitizer (ranging from 0.0 to 2.9 ± 1.0). All tested groups with and without desensitizer showed no significant decrease after aging conditions compared with baseline values (p&gt;0.05). Only the Panavia 21/Gluma Desensitizer combination showed a significant decrease after 4 days of thermocyling compared with initial values and 1 day thermocycling. Self-adhesive cements with Gluma Desensitizer showed increased SBS after aging conditions (ranging from 7.4 ± 1.4 to 15.2 ± 3) compared with groups without desensitizer (ranging from 2.6 ± 1.2 to 8.8 ± 2.9). No cohesive failures in dentin were observed in any of the test groups. Although self-adhesive cements with and without desensitizer presented mainly adhesive failures after water storage (95.8%) and thermocyling (100%), conventional cement (RelyX ARC) showed mainly mixed failures (90.8% and 89.2%, after water storage and thermocyling, respectively). Application of the Gluma Desensitizer to dentin before cementation had a positive effect on the SBS of self-adhesive cements.

scholarly journals Effects of different luting cements and light curing units on the sealing ability and bond strength of fiber posts

2012 ◽  
Vol 31 (4) ◽  
pp. 575-582 ◽  
Author(s):  
Nilüfer Celebi BERIAT ◽  
Ahmet Atila ERTAN ◽  
Zeliha YILMAZ ◽  
Gülsah GULAY ◽  
Cem SAHIN
Keyword(s):  
Bond Strength ◽  
Luting Cements ◽  
Fiber Posts ◽  
Sealing Ability ◽  
Light Curing

scholarly journals Dilemmas in zirconia bonding: A review

2013 ◽  
Vol 141 (5-6) ◽  
pp. 395-401 ◽  
Author(s):  
Kosovka Obradovic-Djuricic ◽  
Vesna Medic ◽  
Slobodan Dodic ◽  
Dragan Gavrilov ◽  
Djordje Antonijevic ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Ceramics ◽  
Ceramic Materials ◽  
The Other ◽  
Zirconia Ceramic ◽  
Bonding Mechanism ◽  
Luting Cements ◽  
Esthetic Dentistry ◽  
Selection Of

This article presents a literature review on the resin bond to zirconia ceramic. Modern esthetic dentistry has highly recognized zirconia, among other ceramic materials. Biocompatibility of zirconia, chemical and dimensional stability, excellent mechanical properties, all together could guarantee optimal therapeutical results in complex prosthodontic reconstruction. On the other hand, low thermal degradation, aging of zirconia as well as problematic bonding of zirconia framework to dental luting cements and tooth structures, opened the room for discussion concerning their clinical durability. The well known methods of mechanical and chemical bonding used on glass-ceramics are not applicable for use with zirconia. Therefore, under critical clinical situations, selection of the bonding mechanism should be focused on two important points: high initial bond strength value and long term bond strength between zirconia-resin interface. Also, this paper emphases the use of phosphate monomer luting cements on freshly air-abraded zirconia as the simplest and most effective way for zirconia cementation procedure today.

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