INFLUENCE OF ETCHING AGGRESSIVENESS OF UNIVERSAL ADHESIVES ON LONGEVITY OF RESIN-DENTIN BONDING USING SELF-ETCH MODE

SUMMARY Objectives: The aim of this study was to investigate the effect of different protocols of 17% ethylene diamine tetra-acetic acid (EDTA) conditioning on the etching pattern and immediate bond strength of universal adhesives to enamel and sclerotic dentin. Methods and Materials: Forty bovine teeth with sclerotic dentin and 20 human third molars were randomly divided into eight groups resulting from the combination of the main factors surface treatment (none, two-minute EDTA conditioning manual application, 30-second EDTA manual application, 30-second EDTA sonic application) and adhesives systems (Scotchbond Universal Adhesive [SBU] and Prime & Bond Elect [PBE]). Resin-dentin and enamel-dentin bond specimens were prepared and tested under the microtensile bond strength (μTBS) and microshear bond strength (μSBS) tests, respectively. The etching pattern produced on the unground enamel and the sclerotic dentin surfaces under the different protocols and adhesive systems was evaluated under scanning electron microscopy. Results: For enamel, only the main factor adhesive was significant (p<0.0001), with SBU showing the highest μSBS. In sclerotic dentin, the lowest mean was observed for the group without EDTA application and the highest mean in the group with EDTA application with the sonic device for 30 seconds. Regardless of the EDTA protocol, the highest means of μTBS were observed for SBU (p<0.05). Conclusions: EDTA conditioning improves the bonding performance of universal adhesives in the self-etch mode on sclerotic dentin, mainly when applied for 30 seconds with the aid of a sonic device. EDTA pretreatment also improves the retentive etching pattern of enamel, but it does not result in higher enamel bond strength.

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Dentin Bonding and SEM Analysis of a New Experimental Universal Adhesive System Containing a Dendrimer

Polymers ◽

10.3390/polym12020461 ◽

2020 ◽

Vol 12 (2) ◽

pp. 461 ◽

Cited By ~ 1

Author(s):

Joana Vasconcelos e Cruz ◽

Mário Polido ◽

José Brito ◽

Luisa L. Gonçalves

Keyword(s):

Mixed Models ◽

Dental Materials ◽

Adhesive System ◽

Sem Analysis ◽

New Paradigm ◽

Adhesive Properties ◽

Universal Adhesive ◽

Cross Sectional ◽

Universal Adhesives ◽

Self Etch

Due to their polymerization characteristics, hyper-branched dendrimers have lately shown to be promising candidates for use in dental materials. In this study, a new dental adhesive system was prepared, using a dendrimer derived from 2-isocyanatoethyl methacrylate (G-IEMA), and its adhesive properties were investigated. The exposed dentin was treated with four universal adhesives (UAs): SBU (Scotchbond Universal™), FUT (Futurabond M+™), AE1 (experimental adhesive with Bis-GMA) and AE2 (experimental adhesive with G-IEMA), using Etch & Rinse (ER) or Self Etch (SE) protocols. Composite build-ups were prepared and stored for 24 h at 37 °C in distilled water. Composite/dentin beams were prepared with cross-sectional areas of 1 ± 0.3 mm2 and µTBS (Micro-tensile bond strength) test was performed at 0.5 mm/min. Failures modes were evaluated by stereomicroscopy, and bonding interfaces were observed by scanning electron microscopy (SEM). Statistical analysis of µTBS data was performed using General Linear (GLM) and Linear Mixed Models (LMM). The effect of adhesive type on µTBS was significant (p = 0.010), with AE1 presenting significantly higher µTBS than SBU (p = 0.019). No other differences between adhesives were observed. ER showed significantly better results than SE (p = 0.019), and no significant interactions between the adhesives and protocols were determined. Results obtained so far pinpoint the emergence of a new paradigm in the dental materials field, as G-IEMA can be used successfully as an alternative to Bis-GMA.

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Flow Cytometry Analysis of Antibacterial Effects of Universal Dentin Bonding Agents on Streptococcus mutans

Molecules ◽

10.3390/molecules24030532 ◽

2019 ◽

Vol 24 (3) ◽

pp. 532 ◽

Cited By ~ 7

Author(s):

Barbara Lapinska ◽

Magdalena Konieczka ◽

Beata Zarzycka ◽

Krzysztof Sokolowski ◽

Janina Grzegorczyk ◽

...

Keyword(s):

Flow Cytometry ◽

Antimicrobial Activity ◽

Antibacterial Activity ◽

Streptococcus Mutans ◽

Dental Materials ◽

Antibacterial Properties ◽

Bonding Agents ◽

Dentin Bonding ◽

Bonding Systems ◽

Self Etch

There is no consensus on the antibacterial activity of dentin bonding systems (DBS). Many study models have been used to evaluate the antimicrobial activity of dental materials. In this study, a novel detection method, flow cytometry, was introduced. It allows for evaluation of the antibacterial activity of DBS, based on assessment of the disruption of the bacterial physical membrane induced by DBS. The aim of the study was to evaluate the antibacterial properties of selected dentin bonding systems against Streptococcus mutans. The highest antibacterial activity against S. mutans was observed for Adhese Universal (99.68% dead cells) and was comparable to that of Prime&Bond Universal, OptiBond Universal, or Clearfil Universal Bond Quick (p > 0.05). The lowest activity of all tested systems was displayed by the multi-mode adhesive, Universal Bond (12.68% dead bacteria cells), followed by the self-etch adhesive, OptiBond FL (15.58% dead bacteria cells). The present study showed that in the case of two-component DBS, the primer exhibited higher antimicrobial activity than the adhesive (or bond) itself.

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Influence of 38% silver diamine fluoride application on bond stability to enamel and dentin using universal adhesives in self‐etch mode

European Journal Of Oral Sciences ◽

10.1111/eos.12701 ◽

2020 ◽

Vol 128 (4) ◽

pp. 354-360

Author(s):

Mark D. Markham ◽

Akimasa Tsujimoto ◽

Wayne W. Barkmeier ◽

Carlos A. Jurado ◽

Nicholas G. Fischer ◽

...

Keyword(s):

Silver Diamine Fluoride ◽

Bond Stability ◽

Universal Adhesives ◽

Self Etch

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Effect of Double-application of Three Single-step Self-etch Adhesives on Dentin Bonding and Mechanical Properties of Resin-dentin Area

Operative Dentistry ◽

10.2341/09-011-l ◽

2009 ◽

Vol 34 (6) ◽

pp. 716-724 ◽

Cited By ~ 11

Author(s):

S. Wei ◽

Y. Shimada ◽

A. Sadr ◽

J. Tagami

Keyword(s):

Mechanical Properties ◽

Bond Strength ◽

Clinical Relevance ◽

Single Step ◽

Bonding Layer ◽

Dentin Bonding ◽

Self Etch

Clinical Relevance Double-application enhanced the hardness of bonding layer and resin-dentin interface for all the adhesives used; however, it only improved the bond strength to dentin for some of the single-step self-etch adhesives.

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Immediate Dentin Bond Strength of Self-etch Dentine Adhesives

Journal of Research in Dentistry ◽

10.19177/jrd.v2e1201451-57 ◽

2014 ◽

Vol 2 (1) ◽

pp. 51

Author(s):

David Lafuente ◽

Isabel Ferreto

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Statistical Difference ◽

Composite Resin ◽

The Other ◽

Bonding Agents ◽

Dentin Bonding ◽

Dentin Surface ◽

Sixth Generation ◽

Self Etch

Purpose: The purpose of this study was to evaluate the immediate bond strength of two sixth generation and two seventh generation dentin bonding agents to superficial dentin. Specimens were prepared to exposed superficial dentin and either Clearfil SE, Clearfil S3, Adper Prompt-l-pop of G-bond was applied over the dentin surface and light cured. Then composite resin was applied to the treated surface and light-cured in two increments. Specimens were tested 15 minutes after they were made for shear bond strength at 0.01 cm/min. Clearfil SE had statistically higher bond strength than the other three adhesives evaluated (42.9 MPa). There was no statistical difference among Clearfil S3, Adper Prompt-l-pop and G-Bond. The dentin adhesive with an application of an acidic primer before the application of the adhesive showed better immediate bond strength.

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