20,728 results match your criteria adhesives

Natural antioxidants to restore immediate bond strength to bleached enamel: Systematic review and meta-analysis of in vitro studies.

J Esthet Restor Dent 2021 May 11. Epub 2021 May 11.

Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo Sate, Pachuca, Hgo, Mexico.

Objective: To evaluate whether natural antioxidant treatment would enhance the immediate bond strength of dental adhesives to bleached enamel through a systematic review and meta-analysis.

Materials And Methods: Two reviewers performed a literature search up to November 2019 in seven databases. Only in vitro studies that evaluated the effect of the application of natural antioxidants in the bond strength of dental adhesives to bleached enamel were included. Read More

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Influence of wood species and adhesive type on the performance of multilaminated plywood.

Environ Sci Pollut Res Int 2021 May 10. Epub 2021 May 10.

Department of Engineering, Federal University of Lavras, Lavras, MG, 37200-000, Brazil.

The quality of plywood depends on factors such as the forest species and the adhesive used in their production, and understanding the interferences of these factors in the final properties of the plywood is of fundamental importance. The study aimed to develop multilayer plywood with two forest species and two types of adhesive and to evaluate the influences of these factors (forest species and adhesive) on the physical and mechanical properties of the plywood. The panels were produced with wood veneers of parica and pine with two types of adhesives, urea-formaldehyde and phenol-formaldehyde, with a weight of 150 g. Read More

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A prospective, multi-center, practice-based cohort study on all-ceramic crowns.

Dent Mater 2021 May 7. Epub 2021 May 7.

Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Switzerland; Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University Mainz, Germany.

Objectives: The aim of this prospective, multi-center, practice-based cohort study was to analyze factors associated with the success of all-ceramic crowns.

Methods: All-ceramic crowns placed in a practice-based research network ([Ceramic Success Analysis, AG Keramik) were analyzed. Data from 1254 patients with (mostly in-office CAD/CAM) all-ceramic crowns placed by 101 dentists being followed up for more than 5 years were evaluated. Read More

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Tissue adhesives for bacterial inhibition in extracorporeal membrane oxygenation cannulae.

Intensive Care Med Exp 2021 May 10;9(1):25. Epub 2021 May 10.

Critical Care Research Group, The Prince Charles Hospital and University of Queensland, Chermside, QLD, Australia.

Background: One of the most serious complications of extracorporeal membrane oxygenation (ECMO) therapy is ECMO cannulae infection, which can occur at quadruple the rate of central venous catheter infections, and significantly impact morbidity and paediatric mortality. The objective of this in vitro observational study was to assess antimicrobial properties of two n-butyl-2-octyl cyanoacrylate tissue adhesive (TA) formulations for bacterial inhibition at peripheral ECMO cannulae insertion sites.

Methods: Antimicrobial properties were assessed using modified agar disk-diffusion (n = 3) and simulated agar cannulation insertion site (n = 20) models. Read More

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Methacrylate-functionalized proanthocyanidins as novel polymerizable collagen cross-linkers - Part 2: Effects on polymerization, microhardness and leaching of adhesives.

Dent Mater 2021 May 5. Epub 2021 May 5.

School of Dentistry, University of Missouri - Kansas City, Kansas City, MO, 64108, USA. Electronic address:

Objective: The aim of the study was to investigate the effects of a novel polymerizable collagen cross-linker methacrylate-functionalized proanthocyanidins (MAPA) on the polymerization, microhardness and leaching of a HEMA-based experimental dental adhesive system.

Methods: Three MAPAs were synthesized using different methacrylate (MA) to proanthocyanidins (PA) feeding ratios of 1:2, 1:1, and 2:1 to obtain MAPA-1, MAPA-2, and MAPA-3, respectively. The resulting three MAPAs and PA were added to an experimental adhesive formulated with HEMA and a tri-component photoinitiator system (0. Read More

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Not Removing the Glossy White Cover from Adhesive INVOS Neonatal Sensors Affects the Oxygenation Measurement.

Adv Exp Med Biol 2021 ;1269:353-357

Biomedical Optics Research Laboratory (BORL), Department of Neonatology, University Hospital Zürich, University of Zürich, Zurich, Switzerland.

The randomized clinical trial, SafeBoosC III, evaluates the effect of treatment guided by cerebral tissue oximetry monitoring in extremely preterm infants. Treatment should be considered, when cerebral oxygen saturation (StO) drops below a predefined hypoxic threshold. This threshold value differs between different brands of instruments. Read More

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Characteristics of biofilm-induced degradation at resin-dentin interfaces using multiple combinations of adhesives and resins.

Dent Mater 2021 May 5. Epub 2021 May 5.

Laboratory of Molecular and Preventive Dentistry, Department of Preventive Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Huangpu District, Shanghai 200011, China. Electronic address:

Objective: We aimed to evaluate morphological, mechanical and chemical characteristics at resin-dentin interfaces using multiple combinations of adhesives and resins after a short-term biofilm-induced degradation.

Methods: Cervical cavities were prepared in bovine incisors, treated by Clearfil SE Bond 2 (SE) or FL-Bond II (FL), restored by Clearfil Majesty ES Flow (ES) or Beautifil Flow Plus (BFP) and grouped into SE-ES, SE-BFP, FL-ES and FL-BFP. After biofilm challenge, interfacial gaps and dentin wall lesions were examined by optical coherence tomography (OCT). Read More

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Assessment of Commercial Off-the-Shelf Tissue Adhesives for Sealing Military-Relevant Corneal Perforation Injuries.

Mil Med 2021 May 7. Epub 2021 May 7.

Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX 78234, USA.

Introduction: Open-globe ocular injuries have increased in frequency in recent combat operations due to increased use of explosive weaponry. Unfortunately, open-globe injuries have one of the worst visual outcomes for the injured warfighter, often resulting in permanent loss of vision. To improve visual recovery, injuries need to be stabilized quickly following trauma, in order to restore intraocular pressure and create a watertight seal. Read More

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Effect of urea concentration on properties of peanut protein isolate, arachin and conarachin-based adhesives during urea-epichlorohydrin modification.

R Soc Open Sci 2021 Mar 31;8(3):202227. Epub 2021 Mar 31.

College of Food Science and Engineering, Henan University of Technology, 100, Lianhua Street, High-tech, Zhengzhou 450001, Henan, People's Republic of China.

To lay a theoretical basis for the preparation of peanut protein-based adhesives and promote the sustainable development of the adhesive industry, properties of peanut protein isolate (PPI), arachin and conarachin-based adhesives modified by urea and epichlorohydrin (ECH) were investigated under different urea concentrations. When the urea concentration was 2 mol l, the wet shear strength of the PPI-based adhesive was 1.24 MPa with the best water resistance. Read More

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Effects of 9,300 nm Carbon Dioxide Laser on Dental Hard Tissue: A Concise Review.

Clin Cosmet Investig Dent 2021 30;13:155-161. Epub 2021 Apr 30.

Faculty of Dentistry, The University of Hong Kong, Hong Kong.

A carbon dioxide laser at 9,300 nm has a high absorption affinity for water and a shallow depth of penetration. It can be used for soft tissue surgery and hemostasis. Besides, it matches well with the absorption characteristic of hydroxyapatite in enamel and dentine. Read More

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Multifaceted Design and Emerging Applications of Tissue Adhesives.

Adv Mater 2021 May 6:e2007663. Epub 2021 May 6.

Department of Mechanical Engineering, McGill University, Montréal, QC, H3A 0C3, Canada.

Tissue adhesives can form appreciable adhesion with tissues and have found clinical use in a variety of medical settings such as wound closure, surgical sealants, regenerative medicine, and device attachment. The advantages of tissue adhesives include ease of implementation, rapid application, mitigation of tissue damage, and compatibility with minimally invasive procedures. The field of tissue adhesives is rapidly evolving, leading to tissue adhesives with superior mechanical properties and advanced functionality. Read More

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Dental tray adhesives and their role as potential transmission medium for microorganisms.

Clin Exp Dent Res 2021 May 6. Epub 2021 May 6.

Department of Prosthodontics and Materials Science, University of Leipzig, Leipzig, Germany.

Objectives: This study aimed to evaluate the possible ability of dental impression tray adhesives to serve as a transmission medium for bacteria and fungi when reusable adhesive applicators are utilized.

Materials And Methods: Ten flasks with tray adhesive were monitored over a period of 12 weeks during clinical use for contamination with bacteria or fungi. Adhesive fluid samples were cultivated on eight different culture media. Read More

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Generic selection criteria for safety and patient benefit [X]: Water-vapor permeability and peel force properties of brand-name and generic ketoprofen tapes.

Drug Discov Ther 2021 Apr 29. Epub 2021 Apr 29.

Department of Pharmaceutical Sciences, Meiji Pharmaceutical University, Tokyo, Japan.

Tape products containing ketoprofen have transdermal analgesic and anti-inflammatory effects. We compared the physicochemical properties (water-vapor permeability, peel force, peel force-time curve) between one brand-name product and eight generic products. Regarding the measurement of water-vapor permeability, the formulations using methacrylic acid n-butyl acrylate copolymer (MBA) adhesives showed higher water-vapor permeability than those using styrene isopropyl styrene block copolymer (SIS) adhesives. Read More

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Qualitative and quantitative evaluation of epoxy systems by Fourier transform infrared spectroscopy and the flexibilizing effect of mercaptans.

An Acad Bras Cienc 2021 3;93(2):e20200799. Epub 2021 May 3.

Instituto Tecnológico de Aeronáutica (ITA), Praça Marechal Eduardo Gomes, 50, Vila das Acácias, 12229-900 São José dos Campos, SP, Brazil.

Epoxy systems are widely applied as adhesives in the aerospace industry. They have excellent adhesion properties, however, being thermosetting, epoxy systems show fracture brittleness characteristics. Polysulfide and polymercaptans are good options to increase the flexibility of the epoxy adhesive. Read More

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Physicochemical properties and biological effects of quaternary ammonium methacrylates in an experimental adhesive resin for bonding orthodontic brackets.

J Appl Oral Sci 2021 3;29:e20201031. Epub 2021 May 3.

Universidade Federal do Rio Grande, Pós-Graduação em Odontologia da do Sul, Porto Alegre, RS, Brasil.

Methodology: Fixed orthodontic appliances may lead to biofilm accumulation around them that may increase caries risk. This study aimed to evaluate the influence of quaternary ammonium methacrylates (QAMs) on the physicochemical properties, cytotoxicity, and antibacterial activity of adhesive resins for orthodontic purposes. A base resin was prepared with a comonomer blend and photoinitiator/co-initiator system. Read More

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An Engineered Protein Adhesive with Properties of Tissue Integration and Controlled Release for Efficient Cartilage Repair.

Adv Healthc Mater 2021 May 5:e2100109. Epub 2021 May 5.

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.

Cartilage damage is a prevalent health concern among humans. The inertness of cartilage, the absence of self-healing properties, and the lack of appropriate repair materials that integrate into the tissue pose a significant challenge for cartilage repair. Thus, it is important to develop novel soft biomaterials with strong tissue adhesion and chondrogenic capabilities for cartilage repair. Read More

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Validation of Adhesive Single-Lead ECG Device Compared with Holter Monitoring among Non-Atrial Fibrillation Patients.

Sensors (Basel) 2021 Apr 30;21(9). Epub 2021 Apr 30.

Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea.

There are few reports on head-to-head comparisons of electrocardiogram (ECG) monitoring between adhesive single-lead and Holter devices for arrhythmias other than atrial fibrillation (AF). This study aimed to compare 24 h ECG monitoring between the two devices in patients with general arrhythmia. Twenty-nine non-AF patients with a workup of pre-diagnosed arrhythmias or suspicious arrhythmic episodes were evaluated. Read More

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Repeat variation resolves a complete aggregate silk sequence of bolas spider Mastophora phrynosoma.

Integr Comp Biol 2021 May 4. Epub 2021 May 4.

Department of Biological Sciences, University of Maryland, Baltimore County, 1000 Hilltop Circle, MD 21250, USA.

Many species of spider use a modified silk adhesive, called aggregate glue, to aid in prey capture. Aggregate spidroins (spider fibroins) are modified members of the spider silk family, however they are not spun into fibers as are their solid silk relatives. The genes that encode for aggregate spidroins are the largest of the known spidroin genes and are similarly highly repetitive. Read More

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Effect of double layer application on bond durability of universal adhesives to proximal dentin-cementum gingival margins.

Am J Dent 2021 Apr;34(2):80-86

Bioscience Research Center, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA.

Purpose: To evaluate and compare the effect on micro-tensile bond strength (µTBS) of a double layer application of three universal adhesives applied in self-etch mode to proximal dentin/cementum gingival margins of class II direct composite restorations, immediately and after 12 months water storage.

Methods: 66 molars with compound class II cavities, with gingival margin 1 mm below CEJ, were divided into three groups according to the universal adhesive used. The adhesives evaluated included All-Bond Universal (AB), Single Bond Universal (SB), and Prime&Bond Elect (PB). Read More

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Probing the mineralized tissue-adhesive interface for tensile nature and bond strength.

J Mech Behav Biomed Mater 2021 Apr 29;120:104563. Epub 2021 Apr 29.

Institute for Bioengineering Research (IBER), University of Kansas, 1530 W. 15th St, Lawrence, KS, 66045, USA; Department of Mechanical Engineering, University of Kansas, 1530 W. 15th St, Lawrence, KS, 66045, USA; Civil, Environmental and Architectural Engineering Department, University of Kansas, 1530 W. 15th St, Lawrence, KS, 66045, USA. Electronic address:

The mechanical performance of the dentin-adhesive interface contributes significantly to the failure of dental composite restorations. Rational material design can lead to enhanced mechanical performance, but this requires accurate characterization of the mechanical behavior at the dentin-adhesive interface. The mechanical performance of the interface is typically characterized using bond strength tests, such as the micro-tensile test. Read More

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Influence of reduced application time on bonding durability of universal adhesives to demineralized enamel.

Muhammet Karadas

Clin Oral Investig 2021 Apr 30. Epub 2021 Apr 30.

Department of Restorative Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, 53100, Rize, Turkey.

Objectives: This study aimed to assess the effect of application time on the microshear bond strength (μSBS) of three universal adhesives in demineralized and sound enamel before and after aging.

Materials And Methods: Bovine teeth (192) were prepared where buccal surfaces were ground and divided into two groups (sound enamel and demineralized enamel). The specimens in each group were divided into 12 subgroups by combining 3 adhesive agents (All-Bond Universal, Scotchbond Universal, and Tokuyama Universal Bond) × 4 adhesion strategy. Read More

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Tuning gelatin-based hydrogel towards bioadhesive ocular tissue engineering applications.

Bioact Mater 2021 Nov 17;6(11):3947-3961. Epub 2021 Apr 17.

Massachusetts Eye and Ear and Schepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.

Gelatin based adhesives have been used in the last decades in different biomedical applications due to the excellent biocompatibility, easy processability, transparency, non-toxicity, and reasonable mechanical properties to mimic the extracellular matrix (ECM). Gelatin adhesives can be easily tuned to gain different viscoelastic and mechanical properties that facilitate its ocular application. We herein grafted glycidyl methacrylate on the gelatin backbone with a simple chemical modification of the precursor, utilizing epoxide ring-opening reactions and visible light-crosslinking. Read More

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November 2021

Carbon Nanotubes/Regenerated Silk Composite as a Three-Dimensional Printable Bio-Adhesive Ink with Self-Powering Properties.

ACS Appl Mater Interfaces 2021 May 3. Epub 2021 May 3.

Dipartimento di Ingegneria Civile e Ambientale, Università degli Studi di Perugia, Strada di Pentima 4, Terni 05100, Italy.

In this study, regenerated silk (RS) obtained from cocoons is compounded with carboxyl-functionalized carbon nanotubes (f-CNTs) in an aqueous environment for the fabrication of functional bio-adhesives. Molecular interactions between RS and carboxyl groups of CNTs result in structural increase of the β-sheet formation, obtaining a resistant adhesive suitable for a wet biological substrate. Moreover, the functionalization of CNTs promotes their dispersion in RS, thus enabling the production of films with controlled electrical conductivity. Read More

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An injectable double cross-linked hydrogel adhesive inspired by synergistic effects of mussel foot proteins for biomedical application.

Colloids Surf B Biointerfaces 2021 Apr 24;204:111782. Epub 2021 Apr 24.

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China; Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201301, China; Shandong International Biotechnology Park Development Co. Ltd, 39, Keji Avenue, Yantai High-Tech Zone, 264670, Shandong Province, China. Electronic address:

Hydrogel adhesives with high tissue adhesion, biodegradability and biocompatibility are benefit for promoting surgical procedures and minimizing the pain and post-surgical complications of patients. In this paper, an injectable mussel inspired double cross-linked hydrogel adhesive composed of thiolated mussel inspired chitosan (CSDS) and tetra-succinimidyl carbonate polyethylene glycol (PEG-4S) was designed and developed. CSDS was synthesized with thiol and catechol groups inspired by the synergistic effect of mussel foot proteins (mfps). Read More

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Effect of different types of acid-etching agents and adhesives on enamel discoloration during orthodontic treatment.

J Dent Res Dent Clin Dent Prospects 2021 13;15(1):7-10. Epub 2021 Feb 13.

Dentist, Private Practitioner, Tabriz, Iran.

Acid etching and bonding is a routine process in orthodontic treatment. The present study aimed to evaluate enamel discoloration after using different types of acid etching and adhesive agents. A total of 105 extracted human premolars were divided into six groups regarding the type of acid etching agent: solution and gel of 37% phosphoric acid, and type of self-cured adhesive agent: Unite (3M, fluoride-free), Resilience (Ortho Technology), and Rely-a-Bond (Reliance, fluoride-releasing adhesive), with each group containing 15 specimens. Read More

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February 2021

Lignin and Lignin-Derived Compounds for Wood Applications-A Review.

Molecules 2021 Apr 26;26(9). Epub 2021 Apr 26.

Department of Wood Biology and Wood Products, Georg-August University of Goettingen, Büsgenweg 4, 37077 Göttingen, Germany.

Improving the environmental performance of resins in wood treatment by using renewable chemicals has been a topic of interest for a long time. At the same time, lignin, the second most abundant biomass on earth, is produced in large scale as a side product and mainly used energetically. The use of lignin in wood adhesives or for wood modification has received a lot of scientific attention. Read More

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Study of the Electrical Properties of Aluminate Cement Adhesives for Porcelain Insulators.

Materials (Basel) 2021 Apr 26;14(9). Epub 2021 Apr 26.

College of Water and Architectural Engineering, Shihezi University, Xinjiang 832003, China.

Electrical properties are one of the essential parameters of cement-based materials used in suspension porcelain insulators. This paper studied the electrical properties of aluminate cement adhesives (ACA) containing silica fume (SF), as well as their compressive strength and porosity. The results indicated that the addition of silica fume improved the resistivity of ACA under a saturated state (relative humidity is 50%). Read More

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A Review on Current Trends of Polymers in Orthodontics: BPA-Free and Smart Materials.

Polymers (Basel) 2021 Apr 27;13(9). Epub 2021 Apr 27.

BioInspired Device and Tissue Engineering Research Group, School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81300, Malaysia.

Polymeric materials have always established an edge over other classes of materials due to their potential applications in various fields of biomedical engineering. Orthodontics is an emerging field in which polymers have attracted the enormous attention of researchers. In particular, thermoplastic materials have a great future utility in orthodontics, both as aligners and as retainer appliances. Read More

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In Search of the Driving Factor for the Microwave Curing of Epoxy Adhesives and for the Protection of the Base Substrate against Thermal Damage.

Molecules 2021 Apr 13;26(8). Epub 2021 Apr 13.

PhotoGreen Laboratory, Dipartimento di Chimica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia, Italy.

This study used controlled microwaves to elucidate the response of adhesive components to microwaves and examined the advantages of microwave radiation in curing epoxy adhesives. Curing of adhesives with microwaves proceeded very rapidly, even though each component of the adhesive was not efficiently heated by the microwaves. The reason the adhesive cured rapidly is that microwave heating was enhanced by the electrically charged (ionic) intermediates produced by the curing reaction. Read More

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Tacky-Free Polyurethanes Pressure-Sensitive Adhesives by Molecular-Weight and HDI Trimer Design.

Materials (Basel) 2021 Apr 23;14(9). Epub 2021 Apr 23.

Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea.

Polyurethane pressure-sensitive adhesives (PU-PSAs) with satisfactory tack, cohesion, and removability were newly developed through the synthetic process by reacting methylene diisocyanate, poly(ethylene glycol) (PEG), and a 1,4-butanediol chain extender based on the different HDI/HDI trimer ratios. The sticking properties of PU-PSAs depended on both the HDI/HDI trimer ratio and crosslinking-agent composition in the formulation. The molecular weight (MW) dependence of adhesion in PU-PSA was observed in the range of 1000 < Mn < 3000, suggesting that the increase in MW limits the pressure-sensitive adhesion of these samples. Read More

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