Aging Methods—An Evaluation of Their Influence on Bond Strength

Teixeira, Gabriela Simões; Pereira, Gabriel Kalil Rocha; Susin, Alexandre Henrique

doi:10.1055/s-0040-1721906

Cited by 15 publications

(14 citation statements)

References 31 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperature fluctuation stresses the bond between the tooth and the resin, which may decrease the bond strength. 23,24 In the current study, the thermal aging method only had an effect on the APC FF group; the mean SBS values of APC FF increased significantly from 24 hours to 1 year, while TP remained constant at all times. A previous study tested the SBS of APC FF after thermocycling for 500 cycles and obtained results that were similar to ours at 24 hours and 6 months.…”

Section: Discussionmentioning

confidence: 53%

Adhesive Precoated Bracket: Is It Worth Using? Long-term Shear Bond Strength: An In Vitro Study

2022

View full text Add to dashboard Cite

Objectives The objectives of this study were to compare the long-term shear bond strength of conventional adhesive on metal brackets with that of adhesive precoated brackets in vitro and to evaluate the amount of adhesive remnant on the tooth surface after debonding. Materials and Methods A total of 90 maxillary permanent premolars were randomly divided into two groups. The samples in the first group were bonded with metal brackets using Transbond PLUS Color Change Adhesive (TP), and the samples in the second group were bonded with Flash-Free adhesive precoated brackets (APC FF). The bonding techniques were performed, according to the manufacturer's instructions. The samples from each group were randomly divided into three subgroups with different thermal cycles (n = 15). The shear bond strength (SBS) and adhesive remnant index (ARI) were measured and calculated. Statistical Analysis Two-way ANOVA and Chi-square test were used to analyze the differences in the SBS and ARI between the groups, respectively. Results The means of the SBS of the APC FF subgroups were significantly lower than those of the TP subgroups, except in the 10,000 thermocycle subgroups. Chi-square test showed no statistically significant differences between the groups and subgroups. An ARI score of 1 was the predominant score in both groups. Conclusions This study found that the SBS of APC FF gradually increased with time and thermal aging did not affect the failure pattern.

show abstract

Section: Discussionmentioning

confidence: 53%

Adhesive Precoated Bracket: Is It Worth Using? Long-term Shear Bond Strength: An In Vitro Study

2022

View full text Add to dashboard Cite

show abstract

“…The storage method of immersing samples in a 10% NaOCl solution, lasting 1 to 5 h, leverages the proteolytic properties of hypochlorite to imitate aging effects by degrading the organic resin and tooth interface components, including unprotected collagen fibrils [76]. Threedimensional printing materials, such as composite cements, are made of dimethacrylates or higher-functional materials (3-6 methacylate or acrylate groups), which means they are highly densely cross-linked, resulting in inferior sorption and solubility [77]. According to the study of Ghavami-Lahiji [78], the process of thermocycling significantly decreased the hardness and flexural strength of the experimental bodies.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Water Sorption and Solubility of 3D-Printed, CAD/CAM Milled, and PMMA Denture Base Materials Subjected to Artificial Aging

Dimitrova,

Vlahova,

Hristov

et al. 2023

J. Compos. Sci.

View full text Add to dashboard Cite

Background: This in vitro study aimed to investigate and evaluate the values of water sorption and water solubility of four types of denture base polymers—3D-printed NextDent 3D Denture + (NextDent, 3D Systems, Soesterberg, The Netherlands), CAD/CAM milled Ivotion Base (Ivotion Denture System, Ivoclar Vivadent, Schaan, Liechtenstein), PMMA conventional Vertex BasiQ 20 (Vertex Dental, 3D Systems, Soesterberg, The Netherlands), and conventional heat-cured BMS (BMS Dental Srl, Rome, Italy)—which were subjected to artificial aging. Materials and methods: 200 specimens were created (n = 50), dried, and weighed accurately. They were immersed in artificial saliva (T1 = 7 days, T2 = 14 days, T3 = 1 month) and re-weighed after water absorption. After desiccation at 37 °C for 24 h and then at 23 ± 1 °C for 1 h, samples were weighed again. Next, thermocycling (100 h, 5000 cycles, 5–55 °C) was performed, and the water sorption and solubility were re-measured. IBM SPSS Statistics 0.26 was used for data analysis, revealing a direct correlation between water sorption and material type. Thermocycling at 55 °C increased water sorption for BMS and Vertex BasiQ 20. In conclusion, NextDent’s 3D-printed resin had higher water sorption values throughout the study. Water solubility averages decreased over time, reaching the lowest in the 30-day period for CAD/CAM milled dental resin Ivotion Base. The artificial aging had no effect on Ivotion Base and NextDent’s water sorption. Thermocycling did not affect the solubility of the materials tested. The conducted study acknowledges the great possibilities of dental resins for additive and subtractive manufacturing for the purposes of removable prosthetics in daily dental practice.

show abstract

“…This study used thermocycling for aging the samples and simulating the oral cavity environment. According to Texeira et al [ 32 ], thermocycling decreases the bond strength of a universal adhesive to enamel and dentin significantly since thermocycling produces stress in the dentin-adhesive interface due to the different thermal expansion coefficients of adhesive and dentin. This leads to an increase in water sorption and further bond failure [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

The effect of dentin surface pretreatment using dimethyl sulfoxide on the bond strength of a universal bonding agent to dentin

et al. 2023

View full text Add to dashboard Cite

Background This study aimed to evaluate the effect of dentin pretreatment by Dimethyl Sulfoxide (DMSO) on the bond strength and microleakage of a universal bonding agent to dentin. Methods Fifty-six dentinal discs (thickness = 2 mm) were obtained from the crowns of the human third molars. The disks were assigned into 4 groups and treated as follows; self-etch-control group: G-Premio universal adhesive was used in self-etch mode, total-etch-control: G-Premio universal adhesive was used in total-etch mode, self-etch-DMSO: Water-based DMSO (50% volume) was applied on the samples for 60 s followed by application of G-Premio universal adhesive in self-etch mode, and Total-etch-DMSO: The samples were etched, and then, water-based DMSO was applied on them for 60 s followed by the application of G-Premio universal adhesive in total-etch mode. Afterward, resin composite was placed on all samples and light-cured. The samples were kept in distilled water and subjected to 5000 thermal cycles. Microshear bond strength was measured using the universal testing machine and failure modes were analyzed using a stereomicroscope. Forty-eight human third molars were used for microleakage evaluation and a standardized class five cavity was prepared on the buccal surface of each tooth. The teeth were assigned into 4 groups and received aforementioned surface treatment and the cavities were filled with resin composite. After storing in water for 24 h, the samples were subjected to 5000 cycles of thermocycling and the microleakage level of the samples was evaluated using silver nitrate uptake at the bonded interface. Two-way ANOVA test was used to analyze the effect of bonding technique (self-etch/ total-etch) and DMSO pretreatment on the microshear bond strength and microleakage of G-Premio adhesive to dentin. Results Bonding technique had no effect on the bond strength values (p = 0.17) while DMSO pretreatment significantly decreased the microshear bond strength of the samples (p = 0.001). DMSO application increased microleakage significantly in total-etch (P-value = 0.02) while it had no effect in self-etch mode (P-value = 0.44). Conclusions Pretreatment of dentin using 50% DMSO significantly reduced the bond strength of G-Premio Bond in both self-etch and total-etch modes. DMSO effect on microleakage depended on the etching technique; DMSO increased the microleakage level when the adhesive was used in total-etch mode while did not affect the microleakage in self-etch mode.

show abstract

Aging Methods—An Evaluation of Their Influence on Bond Strength

Cited by 15 publications

References 31 publications

Adhesive Precoated Bracket: Is It Worth Using? Long-term Shear Bond Strength: An In Vitro Study

Adhesive Precoated Bracket: Is It Worth Using? Long-term Shear Bond Strength: An In Vitro Study

Evaluation of Water Sorption and Solubility of 3D-Printed, CAD/CAM Milled, and PMMA Denture Base Materials Subjected to Artificial Aging

The effect of dentin surface pretreatment using dimethyl sulfoxide on the bond strength of a universal bonding agent to dentin

Contact Info

Product

Resources

About