The effect of different bonding protocols on the repair microshear bond strength of water-stored CAD/CAM resin composite

The purpose of this study was to evaluate the effect of one week of Computer-aided design/Computer-aided manufacturing (CAD/CAM) crown storage on the μTBS between resin cement and CAD/CAM resin composite blocks. The micro-tensile bond strength (μTBS) test groups were divided into 4 conditions. There are two types of CAD/CAM resin composite blocks, namely A block and P block (KATANA Avencia Block and KATANA Avencia P Block, Kuraray Noritake Dental, Tokyo, Japan) and two types of resin cements. Additionally, there are two curing methods (light cure and chemical cure) prior to the μTBS test—Immediate: cementation was performed immediately; Delay: cementation was conducted after one week of storage in air under laboratory conditions. The effect of Immediate and Delayed cementations were evaluated by a μTBS test, surface roughness measurements, light intensity measurements, water sorption measurements and Scanning electron microscope/Energy dispersive X-ray spectrometry (SEM/EDS) analysis. From the results of the μTBS test, we found that Delayed cementation showed significantly lower bond strength than that of Immediate cementation for both resin cements and both curing methods using A block. There was no significant difference between the two types of resin cements or two curing methods. Furthermore, water sorption of A block was significantly higher than that of P block. Within the limitations of this study, alumina air abrasion of CAD/CAM resin composite restorations should be performed immediately before bonding at the chairside to minimize the effect of humidity on bonding.

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A comparison between the capacity of 2D and 3D finite element models in analyzing the stress distribution in shear and microshear bond strength tests

Journal of Research in Dentistry ◽

10.19177/jrd.v1e1201341-54 ◽

2013 ◽

Vol 1 (1) ◽

pp. 41 ◽

Cited By ~ 2

Author(s):

Tathy Aparecida Xavier ◽

Rafael Yagüe Ballester

Keyword(s):

Finite Element ◽

Stress Distribution ◽

Bond Strength ◽

Resin Composite ◽

Adhesive Layer ◽

3D Models ◽

Test Set ◽

Adhesive Interface ◽

Set Up ◽

Microshear Bond Strength

Numerical computational analyses by means of finite element method (FEM) have been allowing the understanding of how the test set-up configurations influence on stress distribution in the tested specimen. During such analysis, the models are simplified but, at the same time, they must allow obtaining enough data and, thus, enough knowledge for changing and standardizing the tests set-ups. This study aimed at comparing the capacity of 2D plane strain simplified finite element models, simulated in a previous study, in analyzing the shear and microshear bond strength tests set-ups, compared to 3D more refined models. Booth 2D and 3D models represented a resin-composite cylinder (with two different stiffness) adhered to a dentin flattened surface by means of an adhesive layer. The shear and microshear specimens had dimensions in a 5:1 ratio, except for the adhesive layer thickness, which remained constant in booth-sized models. It was simulated a load applied by an orthodontic wire-loop in all the cases, varying the distance from the load to the adhesive interface. The 2D models showed to be enough for analyzing the stress distribution patterns along the dentin-adhesive interface. They also allowed verifying the influence of variables such as the relative thickness of the adhesive layer and the distance between the loading and the adhesive interface on the stress distribution. However, the 2D plane strain models showed an opposite effect of the elastic modulus of the resin-composite cylinder on the stress concentration. Furthermore, they lead to a different prediction with respect to the real test set-up configurations. As the 3D models were built with more realistic geometrical refinements compared to the simplified 2D models, they should be considered as more reliable than the 2D models for analyzing the shear and microshear bond strength test set-ups.

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A Comparative Study on the Mechanical Properties of a Polymer-Infiltrated Ceramic-Network Material Used for the Fabrication of Hybrid Abutment

Materials ◽

10.3390/ma11091681 ◽

2018 ◽

Vol 11 (9) ◽

pp. 1681 ◽

Cited By ~ 1

Author(s):

Salim Ongun ◽

Sevcan Kurtulmus-Yilmaz ◽

Gökçe Meriç ◽

Mutahhar Ulusoy

Keyword(s):

Flexural Strength ◽

Bond Strength ◽

Computer Aided Design ◽

Fracture Resistance ◽

Test Group ◽

Cad Cam ◽

Bonding Properties ◽

Failure Loads ◽

Aided Design ◽

Microshear Bond Strength

Polymer-infiltrated ceramic-network (PICN) material is a new type of material used for the hybrid abutments of dental implants. This study aimed to compare flexural strength, bond strengths, and fracture-resistance values of PICN with lithium disilicate ceramic (LDS) and to evaluate the effect of thermocycling on the tested parameters. Twenty specimens were fabricated using computer-aided design and manufacturing (CAD-CAM) technology for each material according to three-point bending (n = 10), microshear bond strength (µSBS), and a fracture-resistance test (hybrid abutment, n = 10). All specimens of each test group were divided into two subgroups, thermocycled or nonthermocycled. Hybrid abutments were cemented on titanium insert bases and then fixed on implants to compare fracture resistance. Failure loads were recorded for each test and data were statistically analyzed. Thermocycling decreased bond strength to the resin luting agent and the fracture-resistance values of both materials (p < 0.001), whereas flexural-strength values were not affected. LDS ceramic showed significantly higher flexural strength, bond strength, and fracture-resistance values than PICN material (p < 0.001). Within the limitations of this study, LDS may be a preferable hybrid-abutment material to PICN in terms of mechanical and bonding properties.

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Comparative study of adhesive systems applied to different regions of dental substrate

Revista Odonto Ciência ◽

10.15448/1980-6523.2016.4.22482 ◽

2017 ◽

Vol 31 (4) ◽

pp. 158

Author(s):

Veridiana Camilotti ◽

Virgínia Bosquiroli ◽

Máx Dobrovolski ◽

Mario Alexandre Coelho Sinhoretic ◽

Priscilla Busatoa Do Monte Ribeiro ◽

...

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Resin Composite ◽

Adhesive System ◽

Cervical Region ◽

Test Machine ◽

Adhesive Failure ◽

Adhesive Systems ◽

Type Analysis ◽

Microshear Bond Strength

OBJECTIVE: The aim of this study was to evaluate the bond strength (BS) of different self-etching adhesive systems to bovine dentin.METHODS: For this purpose, 50 teeth were flattened with silicon carbide abrasive papers and randomly divided into 5 groups: SB – Single Bond Plus; Group AEO – Adper Easy One; Group ADH – AdheSE; Group ASE – Adper SE Plus and Group Clear – Clear Fill. After adhesive system application, 5 Tygon cylinders (1.8 mm×2 mm) were placed on the vestibular surface of each tooth, filled with resin composite (Filtek Z350) and light activated. Three composite resin cylinders were fabricated for each bovine crown, one being located in the incisal region, one in the middle third and one in the cervical region, totaling 30 composite resin test specimens (TS) for each group. The TS were submitted to the microshear bond strength test in a Universal Test Machine Kratos), at a cross-head speed of 0.5 mm/min.RESULTS: The BS was calculated and analyzed by ANOVA (one-way) and Tukey’s test (p<0.05). The highest BS values were obtained in Group SB and there were no significant differences between the adhesive systems tested in the middle and cervical thirds. In the fracture type analysis it was found that adhesive failure was dominant for all groups.CONCLUSION: The conventional two-step adhesive system SB presented the highest bond strength mean to bovine dentin for all the regions.

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Repair bond strength of resin composite to three aged CAD/CAM blocks using different repair systems

The Journal of Advanced Prosthodontics ◽

10.4047/jap.2020.12.3.131 ◽

2020 ◽

Vol 12 (3) ◽

pp. 131

Author(s):

Pinar Gul ◽

Latife Altınok-Uygun

Keyword(s):

Bond Strength ◽

Resin Composite ◽

Cad Cam ◽

Repair Systems

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Evaluation of Microshear Bond Strength of Self-Adhesive Versus Conventional Flowable Resin Composite to Sound and Affected Dentin: An In Vitro Study

International Journal of Health Sciences and Research ◽

10.52403/ijhsr.20210436 ◽

2021 ◽

Vol 11 (4) ◽

pp. 306-312

Author(s):

Dalia M. Abouelmagd ◽

Hanan K. Abouelseoud

Keyword(s):

Bond Strength ◽

Resin Composite ◽

In Vitro Study ◽

Vitro Study ◽

Flowable Composite ◽

Significant Difference ◽

The Mean ◽

Microshear Bond Strength ◽

Vertise Flow

Objectives: This study aimed to compare the microshear bond strength (µSBS) of self-adhesive flowable composite and conventional bonded flowable composite to sound and caries affected dentin. Materials and Methods: In this in vitro study, a total of freshly extracted 40 human molar teeth were used. The occlusal surface was sectioned to expose dentin for µSBS test. The teeth were randomly divided into 2 groups according to the type of flowable composite used into two groups (n=20): group A: self- adhesive flowable composite (Vertise flow), group B: Filtek Z350-XT flowable composite and one-step self-etch adhesive Adper Easy One. A plastic cylindrical mold was used to construct resin composite cylinders (0.8mm diameter x 1mm length) on the sound and caries affected exposed dentin and filled with flowable composite restorative materials according to manufacturer’s instructions. The samples were then immersed in distilled water at 37°C for 24 hours, and underwent µSBS test at a crosshead speed of 0.5 mm/min. Data were analyzed using Student's t-test to compare between the two materials as well as to compare between sound and caries affected dentin. Results: The mean values of µSBS of Filtek Z-350XT to sound and caries affected were 26.6 and 26.7 MPa respectively. The mean µSBS of Vertise Flow to sound and affected were 13.2 and 17.9 MPa respectively. With sound dentin FiltekZ-350XT showed statistically significant higher µSBS than Vertise flow. With caries affected dentin, there was no statistically significant difference between the two materials. There was no statistically significant difference between µSBS of sound and caries affected dentin within each material. The significance level was set at P ≤ 0.05. Conclusions: Within the limitations of this study, the conventional flowable composite yielded the highest µSBS to sound dentin. There was no statistical significant difference in µSBS of self-adhesive and conventional flowable to caries affected dentin. Key words: Composite Resins; Dentin; microshear.

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Data on bond strength of resin cement systems to CAD/CAM resin composite after aging

Data in Brief ◽

10.1016/j.dib.2021.107474 ◽

2021 ◽

pp. 107474

Author(s):

Masaki Yagi ◽

Toshinori Okawa ◽

Fumiaki Kawano

Keyword(s):

Bond Strength ◽

Resin Composite ◽

Resin Cement ◽

Cad Cam

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Effect of Chlorhexidine on Dentin Bond Strength of Two Adhesive Systems after Storage in Different Media

Brazilian Dental Journal ◽

10.1590/0103-6440201300159 ◽

2015 ◽

Vol 26 (6) ◽

pp. 642-647 ◽

Cited By ~ 4

Author(s):

Enio Marcos da Silva ◽

Daniel Hatschbach Glir ◽

Allana Walesca Martins Castanho Gill ◽

Allan Fernando Giovanini ◽

Adilson Yoshio Furuse ◽

...

Keyword(s):

Bond Strength ◽

Resin Composite ◽

Adhesive System ◽

Mineral Oil ◽

Time Interval ◽

Distilled Water ◽

Single Bond ◽

Storage Medium ◽

Adhesive Systems ◽

Microshear Bond Strength

The aim of this study was to evaluate the effect of 2% chlorhexidine (CHX) application during the bonding protocol on microshear bond strength of two adhesive systems, after storage in different media. Seventy-two human molars had their crowns cut in half and embedded in PVC cylinders with acrylic resin. The specimens were randomly divided into experimental groups (n=12) according to the adhesive system (Ambar and Single Bond 2), use of CHX in the bonding protocol, and time interval (24 h and 15 days) in the storage media (distilled water, mineral oil and 1% sodium hypochlorite - NaOCl). Adhesive systems were applied in accordance to manufacturers' recommendations, with or without the use of CHX, and resin composite (Z350 XT) cylinders were placed on the hybridized dentin. After photoactivation, the specimens were stored in distilled water, mineral oil and 1% NaOCl for 24 h and 15 days. Microshear bond strength was determined at a crosshead speed of 0.5 mm/min until fracture. The bond strength data were analyzed statistically by 4-way ANOVA and Tukey's test (α=5%). Use of CHX in the bonding protocol did not cause loss of bond strength in any of the evaluated situations, irrespective of time and storage medium. The storage medium had no influence on bond strength values after 15 days when the bond protocol without CHX application was used. However, the use of CHX in the protocol influenced negatively the bond strength values for Single Bond 2 after 15 days storage in distilled water and 1% NaOCl.

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