Long-term tensile bond durability of two different 4-META containing resin cements to dentin

Clinical Relevance Conventional multistep resin cements presented higher adhesive performance to dentin than simplified self-adhesive cements, which is an important criterion for indirect restoration prognosis. SUMMARY This study aimed to conduct a systematic review of the literature on laboratory studies assessing bonding performance to dentin of conventional and self-adhesive resin cements, in cementing indirect restorations. This review was reported according to the PRISMA Statement. Of a total of 518 studies, 36 were screened full text and reviewed according to exclusion criteria. Nineteen papers were included in the systematic review and meta-analyses, according to the following inclusion criteria: studies that evaluated the bond strength to dentin of indirect restorations cemented with dual conventional or self-adhesive resin cements and those that presented bond strength data in MPa as an outcome. Statistical analyses were conducted using Rev-Man 5.1. Comparisons were performed with random effects models at 5% significance level. A global analysis comparing conventional and self-adhesive cements and three subgroup analyses comparing immediate and long-term results were performed. Global analysis showed a difference between groups, with conventional resin cements presenting higher bond strength results than self-adhesive resin cements, in immediate and long-term time periods (both p=0.03). Immediate and longterm bond strength results were different for self-adhesive cements, favoring immediate bond strength (p=0.03), but immediate and long-term bond strength results for conventional resin cements were not different (p=0.06). Medium or high risk of bias was found in all studies. Conventional multistep resin cements showed superior overall adhesive performance compared with simplified self-adhesive resin cements when used to cement indirect restorations to dentin.

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Effect of Chlorhexidine Treatment Prior to Fiber Post Cementation on Long-Term Resin Cement Bond Strength

Operative Dentistry ◽

10.2341/16-241-lr2 ◽

2018 ◽

Vol 43 (2) ◽

pp. E72-E80 ◽

Cited By ~ 1

Author(s):

M Durski ◽

M Metz ◽

G Crim ◽

S Hass ◽

R Mazur ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Vertical Axis ◽

Resin Cement ◽

Fiber Post ◽

Resin Cements ◽

Single Root ◽

Number Of Cycles ◽

Push Out

SUMMARY The purpose of this study was to evaluate the push-out bond strength of two different adhesive cements (total etch and self-adhesive) for glass fiber post (GFP) cementation in simulated, long-term service (thermocycling) when the root canal is treated with chlorhexidine before cementation. One hundred twenty premolar specimens with a single root canal were selected, endodontically treated, and shaped for GFP cementation (n=120). The specimens were randomly placed into one of 12 groups (10 specimens each) according to cement (T = total-etch RelyX ARC or S = self-adhesive RelyX Unicem), treatment with chlorhexidine (N or Y: without or with), and number of thermal cycles (00, 20, or 40: 0, or 20,000 or 40,000 cycles): 1. TN00, 2. TN20, 3. TN40, 4. TY00, 5. TY20, 6. TY40, 7. SN00, 8. SN20, 9. SN40, 10. SY00, 11. SY20, 12. SY40. The root of each specimen was cut perpendicular to the vertical axis, yielding six 1.0 mm-thick sections. A push-out bond strength test was performed followed by statistical analysis using a factorial analysis of variance. Pairwise comparisons of significant factor interactions were adjusted using the Tukey test. Significant differences of push-out bond strengths were found in the four main effects (resin cement [p<0.0001], treatment with chlorhexidine [p<0.0001], number of cycles [p<0.0001], and root third [p<0.0001]) and all interactions (p<0.05 for all). Both resin cements produced higher bond strength in the cervical third followed by the middle third, and lower values were detected in the apical third. Additionally, the results suggest that the use of an additional disinfection treatment with chlorhexidine before the cement application produced the highest push-out bond strength regardless of root third. Further, the thermocycling simulation decreased the bond strength for both resin cements long-term when the chlorhexidine was not applied before cementation. However, when the root canal was treated with chlorhexidine and the fiber post was cemented with self-adhesive cement, the bond strength increased after 0, 20,000 and 40,000 cycles.

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Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

Dental Materials ◽

10.1016/j.dental.2012.09.006 ◽

2012 ◽

Vol 28 (11) ◽

pp. 1183-1190 ◽

Cited By ~ 43

Author(s):

Thomas Hitz ◽

Bogna Stawarczyk ◽

Jens Fischer ◽

Christoph H.F. Hämmerle ◽

Irena Sailer

Keyword(s):

Bond Strength ◽

Laboratory Study ◽

Resin Cements ◽

Adhesive Resin

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Endodontic irrigants effect on long-term intraradicular adhesion of resin cements

Journal of Adhesion Science and Technology ◽

10.1080/01694243.2017.1307496 ◽

2017 ◽

Vol 31 (22) ◽

pp. 2503-2514

Author(s):

Fernanda Cristina de Lacerda ◽

Flávia Lucisano Botelho Amaral ◽

Cecília Pedroso Turssi ◽

Roberta Tarkany Basting ◽

Fabiana Mantovani Gomes França

Keyword(s):

Resin Cements

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Effect of long-term water storage on resin cements hardness

Dental Materials ◽

10.1016/j.dental.2012.07.136 ◽

2012 ◽

Vol 28 ◽

pp. e59

Author(s):

R.N. Tango ◽

Nogueira Irn ◽

F.C. Gonçalves ◽

P.C. Pereira ◽

P.C.K. Carvalho

Keyword(s):

Water Storage ◽

Resin Cements

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Long-term effect of chlorhexidine on the dentin microtensile bond strength of conventional and self-adhesive resin cements: A two-year in vitro study

International Journal of Adhesion and Adhesives ◽

10.1016/j.ijadhadh.2014.02.001 ◽

2014 ◽

Vol 50 ◽

pp. 228-234 ◽

Cited By ~ 2

Author(s):

Thiago Henrique Scarabello Stape ◽

Murilo de Sousa Menezes ◽

Flávio Henrique Baggio Aguiar ◽

Paulo Sérgio Quagliatto ◽

Carlos José Soares ◽

...

Keyword(s):

Bond Strength ◽

In Vitro Study ◽

Term Effect ◽

Vitro Study ◽

Microtensile Bond Strength ◽

Resin Cements ◽

Adhesive Resin ◽

Long Term Effect

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Effect of Cavity Cleanser With Long-Term Antibacterial and Anti-Proteolytic Activities on Resin–Dentin Bond Stability

Frontiers in Cellular and Infection Microbiology ◽

10.3389/fcimb.2021.784153 ◽

2021 ◽

Vol 11 ◽

Author(s):

Yaping Gou ◽

Wei Jin ◽

Yanning He ◽

Yu Luo ◽

Ruirui Si ◽

...

Keyword(s):

Binding Capacity ◽

Oral Microbiome ◽

Control Group ◽

Secondary Caries ◽

Dentin Bonding ◽

Dentin Surface ◽

Proteolytic Activities ◽

Hybrid Layers ◽

Bond Durability

ObjectiveSecondary caries caused by oral microbiome dysbiosis and hybrid layer degradation are two important contributors to the poor resin–dentin bond durability. Cavity cleansers with long-term antimicrobial and anti-proteolytic activities are in demand for eliminating bacteria-induced secondary caries and preventing hybrid layers from degradation. The objectives of the present study were to examine the long-term antimicrobial effect and anti-proteolytic potential of poly(amidoamine) dendrimers with amino terminal groups (PAMAM-NH2) cavity cleanser.MethodsAdsorption tests by attenuated total reflectance–infrared (ATR-IR) spectroscopy and confocal laser scanning microscopy (CLSM) were first performed to evaluate whether the PAMAM-NH2 cavity cleanser had binding capacity to dentin surface to fulfill its relatively long-term antimicrobial and anti-proteolytic effects. For antibacterial testing, Streptococcus mutans, Actinomyces naeslundii, and Enterococcus faecalis were grown on dentin surfaces, prior to the application of cavity cleanser. Colony-forming unit (CFU) counts and live/dead bacterial staining were performed to assess antibacterial effects. Gelatinolytic activity within the hybrid layers was directly detected by in situ zymography. Adhesive permeability of bonded interface and microtensile bond strength were employed to assess whether the PAMAM-NH2 cavity cleanser adversely affected resin–dentin bonding. Finally, the cytotoxicity of PAMAM-NH2 was evaluated by the Cell Counting Kit-8 (CCK-8) assay.ResultsAdsorption tests demonstrated that the binding capacity of PAMAM-NH2 on dentin surface was much stronger than that of 2% chlorhexidine (CHX) because its binding was strong enough to resist phosphate-buffered saline (PBS) washing. Antibacterial testing indicated that PAMAM-NH2 significantly inhibited bacteria grown on the dentin discs as compared with the control group (p < 0.05), which was comparable with the antibacterial activity of 2% CHX (p > 0.05). Hybrid layers conditioned with PAMAM-NH2 showed significant decrease in gelatin activity as compared with the control group. Furthermore, PAMAM-NH2 pretreatment did not adversely affect resin–dentin bonding because it did not decrease adhesive permeability and microtensile strength. CCK-8 assay showed that PAMAM-NH2 had low cytotoxicity on human dental pulp cells (HDPCs) and L929.ConclusionsPAMAM-NH2 cavity cleanser developed in this study could provide simultaneous long-term antimicrobial and anti-proteolytic activities for eliminating secondary caries that result from a dysbiosis in the oral microbiome and for preventing hybrid layers from degradation due to its good binding capacity to dentin collagen matrix, which are crucial for the maintenance of resin–dentin bond durability.

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