Shear fatigue strength of resin composite bonded to dentin at physiological frequency

Tsujimoto, Akimasa; Barkmeier, Wayne W.; Erickson, Robert L.; Fischer, Nicholas G.; Markham, Mark D.; Takamizawa, Toshiki; Latta, Mark; Miyazaki, Masashi

doi:10.1111/eos.12537

Cited by 20 publications

(18 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Development started with Erickson et al [10,11] and was refined by researchers from NU and CU (Barkmeier et al [12], Takamizawa et al [13], and Tsujimoto et al [14]). The appropriate frequency [13,15], number of cycles [14], and analysis are now well-established. However, at the present time, research comparing the bonding performance of universal adhesives using this bond fatigue test for either etch-and-rinse or self-etch mode has been limited.…”

Section: Introductionmentioning

confidence: 99%

Etch-and-rinse vs self-etch mode for dentin bonding effectiveness of universal adhesives

et al. 2019

Self Cite

View full text Add to dashboard Cite

In this study, dentin bond fatigue resistance and interfacial science characteristics of universal adhesives through etch-and-rinse and self-etch modes were investigated. Resin composite was bonded to human dentin with four universal adhesives, namely, Adhese Universal, All-Bond Universal, G-Premio Bond, and Scotchbond Universal Adhesive. The initial bond strengths, bond fatigue strengths, and interfacial science characteristics of the universal adhesives with dentin through etch-and-rinse and self-etch modes were determined. Bond fatigue resistance (initial bond strength and bond fatigue strength) of universal adhesives in etch-and-rinse mode showed no significant difference in contrast to that in self-etch mode and was material-dependent regardless of the etching mode. Although phosphoric acid conditioning of dentin did not have a strong impact on the bond fatigue resistance, surface free energy and parameters of dentin were significantly decreased by etching and by application of universal adhesives regardless of etching mode. Changes in γ S and γ S h for when universal adhesive was applied to etched and ground dentin were significantly different depending on the adhesive. The results suggest that bonding performance of universal adhesives was effective in both etching modes; however, bonding mechanisms may be different for each. Keywords; light-curing of dental adhesives, dental debonding, dental etching, dental restoration failure, dental stress analysis Materials and Methods Study materials Four universal adhesives were used in this study: (i) Adhese Universal (AU, Ivoclar Vivadent, Schaan, Liechtenstein), (ii) All-Bond Universal (AB, Bisco, Schaumburg, IL, USA), (iii) G-Premio Bond (GB, GC, Tokyo, Japan), and (iv) Scotchbond Universal Adhesive (SU, 3M Oral Care). Ultra-Etch (Ultradent, South Jordan, UT, USA) was used as a 35% phosphoric acid pre-etching agent and Z100 Restorative (3M Oral Care) as the resin composite employed to make specimens. Table 1 lists the tested materials and their lot numbers and components. Specimen preparation This study used de-identified extracted human molar teeth. To comply with research ethics, the protocol was reviewed and approved by the Ethics Committee for Human Studies of NU (#2015-06) and Biomedical Institutional Review Board at CU (#760765-1). Preparation of the teeth was done in the manner described in the study by Nagura et al. [18], except that a flat dentin surface, rather than enamel surface, was prepared. Specimens with and without etching were prepared for each adhesive, giving a total of eight experimental groups for each of the procedures performed (Table 2). Initial bond strength testing Initial bond strength testing was carried out as described by Nagura et al. [18]. Bond fatigue strength testing Bond fatigue strength testing was carried out as described by Nagura et al. [18].

show abstract

Section: Introductionmentioning

confidence: 99%

Etch-and-rinse vs self-etch mode for dentin bonding effectiveness of universal adhesives

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Many studies applied a cycling rate between 1 and 2 Hz because chewing rate in humans mostly reported was below 2 Hz [43]. Tsujimoto et al [44] stated that the use of physiologic frequency rates for fatigue studies conducted in the laboratory is a challenge because of time requirements. The loading frequency applied in the present study is in accordance with other researches [21,22,45,46] which applied higher rates because the duration of mastication force is reported to be from 0.25 to 0.33 seconds and also to ensure full application of the load.…”

Section: Discussionmentioning

confidence: 99%

Influence of fatigue loading on fracture resistance of endodontically treated teeth restored with endocrowns

Elashmawy¹,

Elshahawy²,

Seddik³

et al. 2021

J Prosthodont Res

View full text Add to dashboard Cite

Purpose: This in vitro study aimed to evaluate the influence of fatigue loading on fracture resistance of endodontically treated molars restored with endocrowns using different machinable blocks. Methods: Endodontically treated mandibular first molars were prepared using a standardized method. Specimens were divided into 4 groups (n = 10). Anatomically shaped endocrowns groups were manufactured using VITA ENAMIC (VE) and KATANA Zirconia (KZ). Layered endocrowns groups were manufactured using IPS e.max CAD (EM) and BioHPP (BH). Half of the specimens of each group were subjected to fracture resistance test, while the other half were subjected to thermocycling and chewing simulation. After fatigue loading, specimens were loaded until failure. Specimens were examined using stereomicroscopy. Data were analyzed using ANOVA analysis of variance and Bonferroni post hoc test (α=0.05). Results: KZ group had the highest initial fracture resistance value (1810.20± 119.56 N) and BH had the lowest value (579.50± 76.15 N). The reduction of fracture resistance after fatigue loading was significant for KZ group (1588.30±216.25 N) and BH group (502.60±11.53 N) and non-significant to VE group (1101.70±77.05 N) and EM group (1112.10±74.12 N). Failure modes of KZ and EM groups showed high percentage of non-restorable fractures, while VE and BH groups showed high percentage of restorable fractures. Conclusions: Within the limitations of this study, the following can be concluded: Poly infiltrated ceramics should be considered as a proper material to be used as an endocrown material because of its ability to be restorable if failure occurred.

show abstract

“…This estimate is much longer than one calculated directly from cycles. A previous study reported that a person makes approximately 2700 chewing cycles per day, or approximately 1,000,000 cycles per year [28]. In addition, another study reported that 1,200,000 cycles are often used to simulate a service time of 5 years [29].…”

Section: Discussionmentioning

confidence: 99%

Bonding and wear properties of self‐adhesive flowable restorative materials

Takamiya

Tsujimoto

Teixeira

et al. 2021

European J Oral Sciences

Self Cite

View full text Add to dashboard Cite

The purpose of this study was to evaluate the bonding and wear properties of selfadhesive flowable restorative materials. Five self-adhesive flowable restorative materials were used. The study parameters were: (i) shear bond strengths; (ii) microleakage; (iii) occlusal wear; and (iv) qualitative evaluation of the bonding interface.The range of shear bond strengths of the materials was as follows: 7.4-12.2 MPa to ground enamel, 22.5-32.5 MPa to etched enamel, and 1.3-4.2 MPa to dentin. The microleakage scores of the materials did not show any statistically significant differences regardless of the presence or absence of etching. The wear facets on the materials showed 0.099-0.447 mm 3 of volume loss and 148.6-365.3 µm maximum depth, with statistically significant differences between materials. Scanning electron microscopic images of the interfaces of the materials showed good adaptation regardless of substrate. The bonding and wear properties of self-adhesive flowable restorative materials were still limited and showed lower values than previously reported results for nanofilled composites with an adhesive system. Selective enamel etching can improve the bonding performance of these materials.

show abstract

Shear fatigue strength of resin composite bonded to dentin at physiological frequency

Cited by 20 publications

References 33 publications

Etch-and-rinse vs self-etch mode for dentin bonding effectiveness of universal adhesives

Etch-and-rinse vs self-etch mode for dentin bonding effectiveness of universal adhesives

Influence of fatigue loading on fracture resistance of endodontically treated teeth restored with endocrowns

Bonding and wear properties of self‐adhesive flowable restorative materials

Contact Info

Product

Resources

About