scholarly journals Microtensile Bond Strength of Cad-Cam and Pressed-Ceramic Inlays to Dentin

2007 ◽  
Vol 01 (02) ◽  
pp. 091-096 ◽  
Author(s):  
A Nilgün Öztürk ◽  
Özgür İnan ◽  
Erkan İnan ◽  
Bora Öztürk
Keyword(s):  
Bond Strength ◽  
Limited Information ◽  
Luting Cements ◽  
Microtensile Testing ◽  
Group I ◽  
Luting Cement ◽  
Cad Cam ◽  
Molar Teeth ◽  
Bond Strengths ◽  
Group B

ABSTRACTObjectives: CAD-CAM system is popular because of high esthetic and short fabrication time. But, there is limited information available about the microtensile bonding of luting cements to CAD-CAM inlays and to dentin. The aim of this study was to examine the bond strength of CAD-CAM (Cerec 3) and pressed-ceramic (IPS Empress 2) inlays to dentin surface by microtensile testing using two luting cements.Materials and Methods: Standardized mesio-occlusal cavities were made in forty extracted molar teeth. An occlusal reduction of 2 mm was made; the bucco-lingual width of the proximal boxes was 4 mm, the occlusal width 3 mm and the depth of the pulpal and axial walls 2 mm. The proximal boxes were extended 1 mm below the cemento-enamel junction. Teeth were randomly assigned to 2 groups to evaluate the bonding of 2 ceramic systems, Cerec 3 (Group I) and IPS Empress 2 (Group II), to dentin. Each of the 2 groups were further divided into 2 luting cement groups, Panavia F (Group A) and Variolink II (Group B). After cementation, the teeth were sectioned into two 1.2x1.2 mm wide ‘I’ shape sections. The specimens were then subjected to microtensile testing at a crosshead speed of 1 mm/min. Twoway ANOVA and Tukey HSD tests were used to evaluate the results.Results: The mean microtensile bond strengths of Cerec 3 and IPS Empress 2 bonding to dentin with luting agents in MPa were Panavia F (13.98±3.44), Variolink II (14.19±3.12) and Panavia F (15.12±3.15), Variolink II (15.45±3.08) respectively. No significant differences were found among the 2 ceramic systems (P>.05) and 2 luting cements with regard to dentin bond strengths (P>.05).Conlusions: There was no difference found between the dentin bond strength of the Cerec 3 and IPS Empress 2 inlays cemented with two luting cements. (Eur J Dent 2007;2:91-96)

Bond Strength of Composite Resin Luting Cements to Fiber-reinforced Composite Root Canal Post

2007 ◽  
Vol 8 (6) ◽  
pp. 17-24 ◽  
Author(s):  
Lippo Lassila ◽  
Anna-Maria Le Bell-Rönnlöf ◽  
Milla Lahdenperä ◽  
Pekka Vallittu
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Composite Resin ◽  
Interpenetrating Polymer Network ◽  
Fiber Reinforced ◽  
Luting Cements ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Luting Cement ◽  
Bond Strengths

Abstract Aims The aim of this study was to compare the attachment of different composite resin luting cements to a fiber-reinforced composite (FRC) post with a semi-interpenetrating polymer network polymer matrix. Methods and Materials Six different brands of composite resin luting cement stubs were applied on the surface of FRC post material and light-cured for 40 seconds. Shear bond strengths of luting cement stubs were measured using a universal testing machine. Results The differences in shear bond strengths between the cements were not statistically significant. Conclusion All of the tested composite resin luting cements provided acceptable attachment to the tested FRC post. The tested FRC post material is suitable to use with different composite resin luting cements. Citation Le Bell-Rönnlöf AM, Lahdenperä M, Lassila L, Vallittu P. Bond Strength of Composite Resin Luting Cements to Fiber-reinforced Composite Root Canal Post. J Contemp Dent Pract 2007 September; (8)6:017-024.

A Bond Strength Study of Luted Castable Ceramic Restorations

1989 ◽  
Vol 68 (5) ◽  
pp. 823-825 ◽  
Author(s):  
P.M. McInnes-Ledoux ◽  
W.R. Ledoux ◽  
R. Weinberg
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
Acid Etching ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Luting Cements ◽  
Luting Cement ◽  
Bond Strengths ◽  
The Mean ◽  
Ceramic Restorations

Accurate intra coronal castings can be produced using a castable ceramic-DICOR®-for which there is a need to identify a suitable luting cement. The aim of this investigation was to evaluate the bond strength of three glass-ionomer luting cements and one resin cement to treated and untreated DICOR®, enamel, and dentin surfaces. Forty "cerammed" DICOR® specimens were assigned to four groups: (1-3) grit-blasting and bonding to each of the three glass-ionomer cements; and (4) acid-etching, silane coating, and bonding to the resin cement. Seventy enamel specimens were assigned to seven groups: (1-3) no etching and bonding to each of the glass-ionomer cements; (4-7) acid-etching and bonding to the glass-ionomer cements and the resin cement. Seventy dentin specimens were assigned to seven groups: (1-4) bonding to each of the three glass-ionomer cements and the resin cement; (5-7) polyacrylic acid preconditioning and bonding to each of the three glass-ionomer cements. The mean resin cement bond strengths (MN/m 2) to DICOR® (9.4) and to etched enamel (10.7) were significantly greater (p<0.01) than those of the glass-ionomer cements (DI-COR®, 0.8-1.2 ; enamel, 0.4-0.9). Preconditioning of enamel and dentin significantly increased (p<0.05) the bond strengths to the glass-ionomer cements. The mean bond strength of the resin cement to untreated dentin (4.3) was significantly higher (p<0.05) than the glass-ionomer bond strengths to untreated dentin (1. 0-1.7) and to preconditioned dentin (2.1-3.3). The high bond strengths achieved with the resin cement are encouraging. Selected surface treatment of DICOR®, enamel, and dentin prior to luting should be clinically useful.

scholarly journals “Ormocer an innovative technology”: A replacement for conventional cements and veneer? A comparative in vitro analysis

2017 ◽  
Vol 11 (01) ◽  
pp. 058-063 ◽  
Author(s):  
Vini Rajeev ◽  
Rajeev Arunachalam ◽  
Sanjna Nayar ◽  
P. R. Arunima ◽  
Sivadas Ganapathy ◽  
...  
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
In Vitro Study ◽  
Sem Analysis ◽  
Innovative Technology ◽  
Group I ◽  
Luting Cement ◽  
Significant Difference ◽  
Vitro Analysis

ABSTRACT Objective: This in vitro study was designed to assess shear bond strength (SBS) of ormocer flowable (OF) resin as a luting agent, ormocer as an indirect veneer material with portrayal of modes of failures using scanning electron microscope (SEM). Materials and Methods: Sixty maxillary central incisors were divided into Group I, II, and III with 20 samples each based on luting cement used. They were OF, self-adhesive (SA) cement, and total etch (TE) cement. These groups were subdivided into “a” and “b” of ten each based on the type of veneering materials used. Veneer discs were fabricated using Ormocer restorative (O) and pressable ceramic (C). Specimens were thermocycled and loaded under universal testing machine for SBS. The statistical analysis was done using one-way ANOVA post hoc Tukey honest significant difference method. Results: A significant difference was observed between the Groups I and II (P < 0.05). The highest mean bond strength when using ormocer veneer was obtained with the Group Ia (19.11 ± 1.92 Mpa) and lowest by Group IIa (8.1 ± 1.04 Mpa), whereas the highest mean bond strength while using ceramic veneer was of similar range for Group Ib (18.04 ± 4.08 Mpa) and Group IIIb (18.07 ± 1.40 Mpa). SEM analysis revealed OF and TE presented mixed type of failure when compared with SA where failure mode was totally adhesive. Conclusion: OF was found equally efficient like TE. Bond strength of ormocer as a veneer was not inferior to ceramic making it one of the promising additions in the field of dentistry.

Tensile bond strength of PMMA- and composite-based CAD/CAM materials to luting cements after different conditioning methods

2013 ◽  
Vol 46 ◽  
pp. 122-127 ◽  
Author(s):  
Christine Keul ◽  
Anna Martin ◽  
Timea Wimmer ◽  
Malgorzata Roos ◽  
Wolfgang Gernet ◽  
...  
Keyword(s):  
Bond Strength ◽  
Tensile Bond Strength ◽  
Luting Cements ◽  
Cad Cam

scholarly journals Bond strength of modern self-adhesive resin cements to human dentin and different CAD/CAM ceramics

2020 ◽  
Vol 22 (2) ◽  
Author(s):  
Andrzej Małysa ◽  
Joanna Weżgowiec ◽  
Dariusz Danel ◽  
Klauss Boening ◽  
Katarzyna Walczak ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Failure Modes ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Shear Strength Test ◽  
Software Failure ◽  
Human Dentin ◽  
Cad Cam ◽  
Bond Strengths

Purpose: The aim of the study was to evaluate the shear bond strength of CAD/CAM ceramics to dentin after cementation with conventional or self-adhesive resin cements. Methods: Three self-adhesive, self-etching cements (Panavia SA, RelyX U200, Maxcem Elite), and one conventional cement (Panavia V5), were selected to lute three CAD/CAM ceramics (IPS Empress CAD, IPS e.max CAD, IPS e.max ZirCAD) onto the dentin. The bond strength was evaluated using a shear strength test according to the PN-EN ISO 29022:2013-10. Evaluation of the differences was performed using the Statistica software. Failure modes were analyzed using a light microscope. Results: All the studied cements differed (regardless of the ceramic type) in the bond strength. The highest bond strength was observed in Panavia V5, lower – in RelyX U200 and Panavia SA, and the lowest – in Maxcem. For IPS e.max ZirCAD, it was observed that compared to Panavia V5, the other cements were characterized by a significantly higher bond strength. For the IPS Empress CAD and the IPS e.max CAD, Panavia V5 displayed the highest bond strength. For all the studied self-adhesive cements, the failure of adhesion between the cement and dentin was predominant mode. Conclusions: Significant differences were found in the shear bond strengths of the CAD/CAM ceramics luted to dentin using tested self-adhesive and conventional cements. The bond strength depended on the combination of ceramic and cement. The IPS e.max ZirCAD had the highest bond strength to dentin after cementation with RelyX U200, while the IPS Empress CAD and IPS e.max CAD – with Panavia V5.

scholarly journals In Vitro Evaluation of the Effect of Different Luting Cements and Tooth Preparation Angle on the Microleakage of Zirconia Crowns

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Behnaz Ebadian ◽  
Amirhossein Fathi ◽  
Melika Savoj
Keyword(s):  
Resin Cement ◽  
Cement Type ◽  
Digital Photograph ◽  
Luting Cements ◽  
Luting Cement ◽  
Cad Cam ◽  
Zirconia Crowns ◽  
Tooth Preparation ◽  
Cementing Agent

Introduction. Discrepancy between the crown border and prepared tooth margin leads to a microleakage that eases the penetration of microorganisms and causes the dissolution of luting cement consequently. Several factors should be considered to achieve optimal fitness, including tooth preparation taper and type of cementing agent. The study aimed to determine the relation of tooth preparation taper and cement type on the microleakage of zirconia crowns. Materials and Methods. Fifty-six freshly extracted premolars without caries and restorations were selected as the study sample and divided into two groups of different tapering degrees (6 and 12 degrees). Zirconia copings were designed and fabricated by the CAD/CAM system. The samples were divided into four subgroups for cementation, and each subgroup was cemented with a different luting cement (n = 7). After 5000 thermocycles at 5°C–55°C and dye penetration, the specimens were sectioned in the mid-buccolingual direction, and a digital photograph of each section was taken under a stereomicroscope. Data were analyzed by the Kruskal–Wallis and Mann–Whitney tests (α = 0.05). Results. The results showed significant differences among the four types of luting cement in marginal permeability (PV < 0.001). Regardless of the type of cement, the 12-degree tapering resulted in a lower microleakage (46.4% without microleakage) with statistically significant differences from the 6-degree tapering (PV = 0.042). Conclusion. Within the limitations of this study, increasing the tapering degree of the prepared tooth for CAD/CAM zirconia copings improved the marginal fit and decreased the microleakage score. In addition, total-etch resin cement indicated the least microleakage.

scholarly journals Evaluation and Comparison of Shear Bond Strengths of Self Etching Primers To Dentin– an In-Vitro Study

2014 ◽  
Vol 02 (02) ◽  
pp. 091-095
Author(s):  
Veerendra Uppin ◽  
Priyanka Sarangi ◽  
Sukanta Satapathy
Keyword(s):  
Shear Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
In Vitro Study ◽  
Strength Based ◽  
Molar Teeth ◽  
Bond Strengths ◽  
Abrasive Paper

AbstractAn in-vitro evaluation was done to compare shear bond strength of four self etching primer adhesives to dentin. 75 human extracted molar teeth were selected. The occlusal surface of these teeth was ground to remove coronal enamel and expose dentin. The dentinal surface of each tooth was then abraded using series of silicon carbide (320, 400, 600 grit) abrasive paper. Teeth were divided into 5 groups of 15 teeth each and composite post were then built on the bonded surfaces using Z-100 hybrid composite. The teeth were then fractured applying shearing load through universal testing machine. Shear strength values were in the range of 15.96 to 22.64 Mpa. Clearfil S3 gave highest mean shear bond strength whereasAdhe SE gave lowest value of shear strength. Based on this study it could be concluded that contemporary self etching primer adhesives bond successfully to dentin and also their bonding ability seems to be comparable to conventional total etch system.

scholarly journals Effects of Potassium Nitrate and Oxalate Desensitizer Agents on Shear Bond Strengths of Orthodontic Brackets

2007 ◽  
Vol 77 (6) ◽  
pp. 1096-1100 ◽  
Author(s):  
Hakan Türkkahraman ◽  
Necdet Adanir
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Potassium Nitrate ◽  
Orthodontic Brackets ◽  
Group Iii ◽  
Group I ◽  
Halogen Light ◽  
Significant Difference ◽  
Bond Strengths

Abstract Objective: To evaluate the effects of potassium nitrate and oxalate desensitizer agents on shear bond strengths of orthodontic brackets. Materials and Methods: Forty-five extracted human premolar teeth were randomly assigned to three groups of 15 each. UltraEZ potassium nitrate desensitizer was applied on teeth in the first group, while BisBlock oxalate desensitizer was applied on teeth in the second group. The third group served as a control. Orthodontic brackets were bonded with a light cure composite resin and cured with a halogen light. After bonding, the shear bond strength of the brackets was tested with a universal testing machine. Results: The highest shear bond strengths were measured in Group III. The shear bond strength in Groups I and II was significantly lower than in Group III (P &lt; .001). Significant difference was also found between Group I and Group II (P &lt; .01). Conclusions: Orthodontic brackets bonded to enamel treated with potassium nitrate and oxalate desensitizers showed significantly lower bond strengths than did brackets bonded to untreated enamel.

scholarly journals Light Transmission of Various Aesthetic Posts at Different Depths and Its Effect on Push-Out Bond Strength, Microhardness of Luting Cement

Medicina ◽  
2022 ◽  
Vol 58 (1) ◽  
pp. 75
Author(s):  
Satheesh B. Haralur ◽  
Turki Abdullah Alasmari ◽  
Mohammed Hussin Alasmari ◽  
Hafiz Mohammed Hakami
Keyword(s):  
Bond Strength ◽  
Light Transmission ◽  
Testing Machine ◽  
Resin Cement ◽  
Light Transmittance ◽  
Zirconia Ceramic ◽  
Luting Cements ◽  
Luting Cement ◽  
Different Depths ◽  
Push Out

Background and Objectives: One requirement for the cemented post is the light transmittance on its entire length up to the deepest portion of a root canal to ensure the complete polymerization of resin cement. This study aimed to determine the light transmission ability in different aesthetic posts at different depths and its effect on the push-out bond strength and microhardness of luting cement at the corresponding interface. Materials and Methods: Twenty endodontic posts from glass fiber posts (GFP), zirconia ceramic posts (ZCP), and highly translucent zirconium oxide posts (HTZP) were sequentially sectioned into 12.8 and 4 mm lengths after recording the light intensity using a dental radiometer. Sixty single rooted premolar teeth root canals were treated and implanted vertically in a resin block. The post space was prepared and cemented with GFP, ZCP, and HTZP posts with twenty samples each. The root portion of teeth samples were sectioned into cervical, middle, and apical portion. A universal testing machine was utilized for the push-out bond strength test for the first ten samples from each group. The remaining ten samples from each group were used for the microhardness test using a micro-indenter instrument. The data were statistically analyzed using one-way Analysis of variance and Tukey HSD tests at p < 0.05. Results: The GFP endodontic postpresented with significant highest light translucency compared to HTZP, which was significantly higher than ZCP. GFP posts showed significantly higher bond strength per unit area compared to ZCP at analogous cross sections. The hardness of luting cement was also significantly higher amongst all tested endodontic posts. Conclusions: GFP high light translucency enhanced the curing of the luting resin cement that resulted in harder cement and a stronger bond supported by hardness and push-out tests. These findings suggest that GFP is preferred to be used with light-cured luting cements for restoration of endodontically treated teeth.

Incremental and Bulk-fill Techniques With Bulk-fill Resin Composite in Different Cavity Configurations

2018 ◽  
Vol 43 (6) ◽  
pp. 631-641 ◽  
Author(s):  
S-H Han ◽  
S-H Park
Keyword(s):  
Bond Strength ◽  
Resin Composite ◽  
Weibull Analysis ◽  
Third Molars ◽  
Group Iii ◽  
Group I ◽  
Custom Made ◽  
Wall Compliance ◽  
Bond Strengths ◽  
Group Ii

SUMMARY Purpose: To compare the microtensile bond strengths of incremental and bulk-fill techniques under different C-factor and compliance conditions. Methods and Materials: Extracted human third molars were divided into three experimental groups. For group I, Class I cavities were prepared. For group II, MOD cavities of the same size were prepared. For group III, the cavities were prepared the same way as group II only with high compliance cavity walls. The cavity wall compliance of the specimens was evaluated. Each of these groups was divided into four subgroups. The teeth were restored using two different materials: TB (Tetric N-Ceram Bulk Fill; Ivoclar Vivadent, Hanau, Germany) and VB (Venus Bulk Fill; Heraeus Kulzer, Armonk, NY, USA), and two methods, either an incremental or bulk-fill technique. Then, the microtensile bond strengths (μ-TBSs) were measured and compared. The polymerization stresses of the composites were calculated using a custom-made device. The results were statistically analyzed using the Kruskal-Wallis test and Weibull analysis. Results: In group I, the μ-TBS obtained using the incremental technique was significantly higher than that obtained by the bulk-fill technique (p&lt;0.05). In contrast, no difference of the μ-TBS value was observed between the two techniques in groups II and III. The μ-TBS value of group I was significantly lower than those of groups II and III (p&lt;0.05). No statistical difference in the μ-TBS was observed when the cavities were filled with either TB or VB (p&gt;0.05). Conclusions: The incremental technique showed higher bond strength than did the bulk-fill technique in high C-factor cavities. However, no difference was found between the two techniques in the low C-factor cavities. The bond strength in the high C-factor cavities was significantly lower than that of the low C-factor cavities.

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