International Journal of Adhesion and Adhesives最新文献

{"title":"Enhancing the properties of thermoplastic-bonded plywood by treating the birch veneers with citric acid","authors":"Pavlo Bekhta ,&nbsp;Ján Sedliačik ,&nbsp;Iryna Kusniak ,&nbsp;Vladimir Gryc ,&nbsp;Tomáš Pipíška ,&nbsp;Jozef Ráheľ ,&nbsp;Petr Lepcio ,&nbsp;David Pavliňák ,&nbsp;Diana Tymyk ,&nbsp;Orest Chernetskyi","doi":"10.1016/j.ijadhadh.2024.103781","DOIUrl":"10.1016/j.ijadhadh.2024.103781","url":null,"abstract":"<div><p>Formaldehyde-free plywood can be successfully manufactured using thermoplastic polymers as adhesives. However, such polymers are characterised by low interfacial adhesion to wood. Citric acid was sprayed on to the surface of the wood veneer to improve its interfacial adhesion to low-density polyethylene film. Birch wood veneers, and virgin (LDPE) and recycled (rLDPE) low-density polyethylene film as adhesives were used to manufacture plywood panels. The wood veneer surface was sprayed with 5 %, 15 % and 25 % citric acid at a dosage of 50, 100 and 150 g/m² before the bonding process. The citric acid treatment was proven to enhance the properties of plywood measured. It was found that the values of water absorption and thickness swelling of plywood decreased (improved), while shear and bending strength increased. The concentration of the citric acid solution significantly affected the properties of plywood, while its dosage did not. Plywood bonded with virgin LDPE film exhibited better properties than that bonded with recycled rLDPE film.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103781"},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of adhesion/cohesion fracture resistant FRP composite repair system for V-notched Al-6061-T6 Aircraft skin","authors":"Somanath Mohanty,&nbsp;Rashmi Ranjan Das","doi":"10.1016/j.ijadhadh.2024.103771","DOIUrl":"10.1016/j.ijadhadh.2024.103771","url":null,"abstract":"<div><p>Designing a highly fracture-resistant FRP composite repair system by considering crucial bonded region (adhesion/cohesion)-type joint fractures in resin infilled V-notched Al-6061-T6 aircraft skin material has been reported. Three-dimensional LEFM-based VCCT integrated FE modelling with parametrized APDL codes for V-notch region joint fractures such as; VNS-AF (V-Notch-Surface-Adhesion-Fracture), VNE-AF (V-Notch-Edges-Adhesion-Fracture), and VNT-CF (V-Notch-Tip-Cohesive-Fracture) have been established for analyzing: (i) effect of patch size variation on critical fracture modes and (ii) suggesting optimum patch size that gives maximum joint fracture resistance. SERR (Strain Energy Release Rate)-based fracture modes with corresponding critical locations on the fracture front are extracted through varying patch sizes along length/width directions. Numerical analyses reveal predominant fracture mode for different joint fractures, i.e. (VNT-CF→Mode-I), (VNE-AF→Mode-III), and (VNE-AF→Mode-III) remains invariant for different patch sizes. Both edge regions of the fracture front for VNS-AF and VNT-CF are critical throughout the patch length/width, but VNE-AF, which propagates unsymmetrically and critical at the central region of the fracture front. In addition, SERR-reduction rates conclude that patch length variation is more critical than patch width for escalating joint fractures, with VNS-AF being the critical fracture responsible for poor design against bond line resin metal interface failure at all patch sizes. SERR-based approach with implemented failure criteria suggests two optimum patch sizes, (40x42) mm² and (40x52) mm^2, that arrest joint region fractures and are further to be verified through corelating with experimental results. Experimental analyses are carried out to (i) validate (resemblance in experimental failure load between the maximum and optimum patch cases) the FE model and (ii) support the numerically achieved optimized patch size by examining failure mode with post-fracture damaged surfaces. A larger proportion of leftover damaged bond line resin on both interface surfaces, highly damaged pattern of resin infilled materials, and the extent of debonding at the FRP patch's side edges support the numerically computed optimum patch size (40x42) mm².</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103771"},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141697065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tensile-shear mechanical properties of friction stir spot weld bonding hybrid joint in welding prior to and after adhesive curing for vehicle using","authors":"Yu Guishen ,&nbsp;Zhao Chunhui ,&nbsp;Liu Chunsheng ,&nbsp;Guo Shaopeng ,&nbsp;Zhang Yanghui ,&nbsp;Zhang Yifeng ,&nbsp;Chen Xin","doi":"10.1016/j.ijadhadh.2024.103769","DOIUrl":"10.1016/j.ijadhadh.2024.103769","url":null,"abstract":"<div><p>This research proposed a temperature-controlled friction stir spot weld bonding process as a solution to the issues of adhesive carbonization and weld impurities in the traditional combination of friction stir spot welding and adhesive bonding. A comprehensive investigation was conducted, including the establishment of a simulation model using the DFLUX subroutine to analyze the welding temperature field and the implementation of an overflow groove to separate the weld from the adhesive. The microstructure and mechanical properties of the joint were examined in the joint of welding before and after the adhesive curing process. The results demonstrated significant improvements in the failure load of the hybrid joints, with increases of 57.4 % and 27.7 %, compared to the welding joint. Additionally, the failure mechanism of the hybrid joint was elucidated by analyzing the fracture morphology.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103769"},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyurethane adhesives from CO2-based polyols and their applied use in footwear, wood and furniture industries","authors":"M Pilar Carbonell-Blasco ,&nbsp;Alicia Marco-Aleixandre ,&nbsp;Rosa María Pérez-Campos ,&nbsp;José Mollá-Landete ,&nbsp;Francisca Arán-Aís ,&nbsp;Elena Orgilés-Calpena","doi":"10.1016/j.ijadhadh.2024.103779","DOIUrl":"10.1016/j.ijadhadh.2024.103779","url":null,"abstract":"<div><p>The decarbonisation of industry is becoming a serious commitment in our society and it is now possible to transform CO₂ captured from industrial emissions into high added value chemical products. In this respect, chemical precursors can be obtained for use in the synthesis of highly demanded polymers on an industrial scale, such as polyurethanes, which are the basis for many formulations of adhesives, varnishes and coatings.</p><p>In this work, reactive polyurethane hot-melt adhesives have been obtained from the revalorisation of CO₂ for use as bioadhesives in the footwear, wood and furniture industries. The CO₂-based reactive polyurethane hot-melt adhesives obtained by the prepolymer method were first characterised with different experimental techniques such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), softening temperature and melting viscosity. The adhesion properties of these adhesives were subsequently measured with T-peel tests on leather/HMPUR adhesives/SBR rubber joints in order to ensure that they met the minimum requirements for use in footwear.</p><p>The performance of these new reactive polyurethane hot-melt adhesives on wood and other furniture materials was also analysed. Initially, for non-structural applications, different adhesives were tested according to standardised methods for their classification considering the use conditions and the tensile-shear strength of lap joints. The adhesives were subsequently characterised in terms of their suitability for bonding larger surfaces. In all cases, they yielded an optimal performance, and those showing the best results were validated for gluing laminated wood intended for structural purposes. Finally, the best adhesive obtained was applied to real furniture, observing no breakage nor any kind of damage.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103779"},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141706887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of the application protocol and bonding strategy of the universal adhesive on dentin previously impregnated with bioceramic sealer","authors":"Antonia Patricia Oliveira Barros ,&nbsp;Joatan Lucas de Sousa Gomes Costa ,&nbsp;Jardel Camilo do Carmo Monteiro ,&nbsp;Lucas David Galvani ,&nbsp;Marcelo Ferrarezi de Andrade ,&nbsp;José Roberto Cury Saad ,&nbsp;Milton Carlos Kuga","doi":"10.1016/j.ijadhadh.2024.103765","DOIUrl":"10.1016/j.ijadhadh.2024.103765","url":null,"abstract":"<div><h3>Purpose</h3><p>To evaluate the effects of the application of universal adhesive with manual brush (MB) or rotary brush (RB), in the etch-and-rinse (ER) or self-etching (SE) strategy, on the bond strength, adhesive layer thickness, and adhesive failure pattern to dentin impregnated with bioceramic sealer, at 24 h and 1 year.</p></div><div><h3>Materials and methods</h3><p>Eighty-eight bovine incisor crowns were impregnated with bioceramic sealer was kept for 15 min and cleaned with cotton soaked in distilled water. They were then divided into four groups (n = 22): ER-MB, ER-RB, SE-MB, SE-RB. Subsequently, the specimens were restored with Filtek Z-250 resin. The adhesive layer thickness was individually analyzed using laser confocal microscope. Bond strength was assessed through microtensile testing, and the failure pattern was examined using a stereomicroscope. Data were analyzed by one-way ANOVA/Tukey's tests (α = 0.05).</p></div><div><h3>Results</h3><p>The adhesive layer thickness provided by ER-MB and SE-MB was greater than that provided by ER-RB and SE-RB (P &lt; 0.05). ER-MB showed the lowest bond strength at 24 h (P &lt; 0.05). At 1 year, SE-MB and SE-RB exhibited the highest bond strength values (P &lt; 0.05). ER-MB demonstrated a higher incidence of adhesive failure at 24 h. At 1 year, SE-RB and SE-MB showed a higher incidence of mixed failure.</p></div><div><h3>Conclusion</h3><p>The use of Scotchbond Universal® adhesive in the etch-and-rinse strategy applied with a MB negatively affects bond strength at 24 h, worsening after 1 year of control, regardless of the application protocol.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103765"},"PeriodicalIF":3.2,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of amino-functionalized carbon nanotubes and acrylic triblock copolymer on lap shear and butt joint strength of high viscosity epoxy at room and elevated temperatures","authors":"Jojibabu Panta ,&nbsp;Andrew N. Rider ,&nbsp;John Wang ,&nbsp;Richard (Chunhui) Yang ,&nbsp;R. Hugh Stone ,&nbsp;Ambrose C. Taylor ,&nbsp;Scott Cheevers ,&nbsp;Ashleigh L. Farnsworth ,&nbsp;Y.X. Zhang","doi":"10.1016/j.ijadhadh.2024.103770","DOIUrl":"10.1016/j.ijadhadh.2024.103770","url":null,"abstract":"<div><p>This study investigates the effectiveness of incorporating different amino-functionalized carbon nanotubes (CNTs) and acrylic triblock copolymer (BCP) into an aerospace-grade relatively high-viscosity epoxy (EA9396) resin to enhance the lap shear and tensile butt-joint strength at room and elevated temperatures (90 °C). To address the common issue of nanoparticle agglomeration in epoxy resin, which is exacerbated by its relatively high viscosity, a novel processing method was developed. This method involves ozone oxidation followed by functionalization with either polyethyleneimine (P + oz-CNTs) or a polyamine hardener (H + oz-CNTs). The functionalization not only ensures uniform dispersion of carbon nanotubes (CNTs) but also enhances their chemical reactivity with both the epoxy and block copolymer (BCP) matrix. The bonding performance of the epoxy, incorporating functionalized CNTs and BCP, was evaluated using single lap shear and tensile butt-joint tests. The results emphasize the substantial enhancement of both lap shear and butt-joint strength in the BCP-modified epoxy with the incorporation of functionalized CNTs (P + oz-CNTs and H + oz-CNTs), evident at both room temperature and 90 °C. At ambient conditions, the lap shear strength of the nanocomposite adhesives (P + oz-CNT + BCP/EA9396 and H + oz-CNT + BCP/EA9396) exhibited significant improvements of 40 % and 48 % respectively. At 90 °C, both formulations demonstrated a 20 % increase in lap shear strength. Furthermore, considerable advancements were observed in butt joint strength, with enhancements of 22 % (P + oz-CNT + BCP/EA9396) and 28 % (H + oz-CNT + BCP/EA9396) at room temperature. Importantly, compared to the unmodified epoxy, the butt joint strength displayed even more remarkable improvements of 49 % (P + oz-CNT + BCP/EA9396) and 42 % (H + oz-CNT + BCP/EA9396) at 90 °C. The analysis of fracture studies showed that introducing amine functionalization resulted in a more consistent dispersion of CNTs and enhanced the ability of the BCP/EA9396 to undergo plastic deformation. The study further demonstrates that functionalization with PEI and amine hardener reduces CNT pull-out, which enhances energy dissipation mechanisms and increases lap shear and butt joint strengths.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103770"},"PeriodicalIF":3.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0143749624001520/pdfft?md5=0be572a01ebedb99777bb4b54a2719cd&pid=1-s2.0-S0143749624001520-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the PEEK composites-titanium interface performances through electrochemical treatment in fibre-metal laminates for aerospace applications","authors":"Riccardo Miranda ,&nbsp;Tommaso Scalici ,&nbsp;Francesco Di Franco ,&nbsp;Monica Santamaria ,&nbsp;Antonino Valenza","doi":"10.1016/j.ijadhadh.2024.103767","DOIUrl":"10.1016/j.ijadhadh.2024.103767","url":null,"abstract":"<div><p>In this work, different surface treatments were investigated to improve the adhesion between grade 5 titanium alloy and carbon fibre-reinforced PEEK composites for aerospace applications. Three types of processes were compared: mechanical treatment (MT), carried out by sander with #80 grit sandpaper, chemical treatment, using a silane coupling agent (SIL) and electrochemical treatment, performed by anodic oxidation. The latter was performed by using an ethylene glycol solution composed of 0.5%wt of ammonium fluoride (NH₄F) and variable volume content of deionized water: 5%v/v, 20 % v/v, 50 % v/v. The ammonium fluoride content was fixed, while the ethylene glycol percentage depend on the variation of water volume. Two values of electric potential were evaluated: 30V and 50V. Finally, for each potential and water content, three different anodizing times were studied: 10 min, 30 min, and 60 min. Morphology studies were performed through Scanning electron microscopy to evaluate how the anodizing parameters could affect the shape of the nanotubes (NTs) layers. Moreover, short beam shear tests were carried out to evaluate the achieved improvement given by the different surface treatments.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103767"},"PeriodicalIF":3.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adhesive contact mechanics of bio-inspired pillars: Exploring hysteresis and detachment modes","authors":"G. Violano,&nbsp;S. Dibitonto,&nbsp;L. Afferrante","doi":"10.1016/j.ijadhadh.2024.103768","DOIUrl":"10.1016/j.ijadhadh.2024.103768","url":null,"abstract":"<div><p>Engineering technologies frequently draw inspiration from nature, as exemplified in bio-inspired adhesive surfaces. These surfaces present textures adorned by pillars, mimicking the topography found on the pads of certain animals renowned for their exceptional adhesive capabilities. The adhesive response is strongly influenced by the morphology of these pillars. In typical existing models, perfect bonding conditions are assumed between the pillar and the countersurface, and solely the detachment process of the pillar from the countersurface is investigated.</p><p>The proposed model, based on the assumption that interactions at the interface are governed by van der Waals forces modeled by the Lennard-Jones potential law, enables the examination of the entire approach and retraction cycle, tracking the movement of the pillar towards and away from the countersurface.</p><p>Our findings reveal that adhesive contact mechanics is primarily influenced by the geometry of the pillar and the potential presence of interfacial ’defects’, which in turn affect the distribution of contact pressure. Furthermore, we show that the detachment process may simultaneously involve various modes of separation, such as crack propagation from outer edge, crack propagation from inner defects, and uniform decohesion. This suggests that existing theoretical models alone cannot fully elucidate the complexity of detachment phenomena. Additionally, we anticipate the occurrence of hysteretic losses during the approach-retraction cycle, attributed to pull-in and pull-off contact jumps. Adhesive hysteresis is a phenomenon consistently observed in experiments but frequently overlooked in existing models.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"134 ","pages":"Article 103768"},"PeriodicalIF":3.2,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface mineral deposition and mechanical properties of one-step bonding agent with copper-modified niobium nanoparticles – An in vitro study","authors":"Alyssa Teixeira Obeid ,&nbsp;Marilia Mattar de Amoêdo Campos Velo ,&nbsp;Tatiana Rita de Lima Nascimento ,&nbsp;Fernanda Sandes de Lucena ,&nbsp;Ana Paula de Melo Alves Guedes ,&nbsp;Ana Zélia Falcão Mendes ,&nbsp;Adriana Nunes dos Santos ,&nbsp;Carlos Alberto Spironelli Ramos ,&nbsp;Rafael Francisco Lia Mondelli ,&nbsp;Juliana Fraga Soares Bombonatti","doi":"10.1016/j.ijadhadh.2024.103764","DOIUrl":"10.1016/j.ijadhadh.2024.103764","url":null,"abstract":"<div><p>This study aimed to investigate the incorporation of copper-modified niobium (Nb/Cu) nanoparticles at concentrations of 0.1 % and 0.3 wt% in a one-step adhesive (PacBond Adhesive). Thirty sound human third molars were randomly divided into three groups: control, 0.1NbCu, and 0.3NbCu. Specimens were restored with PacBond and resin composite OptiComp, Composite LC. Stick specimens (0.64 mm²) were obtained and subjected to microtensile bond strength (MTBS) testing (n = 10) using a universal testing machine at a rate of 0.5 mm/min after 24 h and 6 months. Scanning electron microscope (SEM) analysis, microhardness after 24 h and immersion in ethanol (HK) (n = 7), degree of conversion (DC) (n = 6), and surface mineral deposition (n = 3) were also conducted. Data were analyzed using two-way ANOVA for MTBS and HK, and one-way ANOVA for %SHL and DC, all of them were followed by Tukey's test (p &lt; 0.05). For MTBS, statistical difference in storage times was observed for 0.1NbCu after 24 h (p = 0.007). There was no statistical difference between the control and 0.3NbCu regarding time and materials after 24 h and 6 months (p = 0.065). There was no statistical difference among the groups for DC (p = 0.278), but there was a significant difference among the groups for the factor of time in HK measurements (p = 0.047). The 0.1NbCu and 0.3NbCu groups exhibited absorbance Bands indicative of surface mineral deposition after 14 and 21 days, and the 0.3NbCu interface showed better preservation in SEM analysis. The concentration of 0.3 % NbCu in a one-step adhesive appears promising and may offer enhanced longevity for the tooth/restoration interface.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"133 ","pages":"Article 103764"},"PeriodicalIF":3.2,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shear bond strength and adhesive remnant index evaluation of three different orthodontic adhesive systems using three different light curing times","authors":"Mohammad R. Al-Salem ,&nbsp;Nehal F. Albelasy ,&nbsp;Essam El. Al-Wakeel ,&nbsp;Yasser L. Abdelnaby","doi":"10.1016/j.ijadhadh.2024.103762","DOIUrl":"10.1016/j.ijadhadh.2024.103762","url":null,"abstract":"<div><h3>Background</h3><p>Success of long orthodontic treatment using orthodontic brackets depends mainly on the efficiency of the adhesive system used and it's degree of resistance in the face of stresses and foresees applied during treatment. The aim of this study was to evaluate the shear bond strength of orthodontic brackets bonded with three adhesive systems using different light curing times.</p></div><div><h3>Materials and methods</h3><p>The 126 human extracted premolars were randomly divided into three equal groups (n = 42) depending on the type of adhesive system used; total-etch (Transbond XT), self-etch (Transbond Plus), and self-adhesive (GC-Ortho Connect) system. Then each group was randomly subdivided into three subgroups (n = 14) based on the curing time; 1-s, 3-s, and 20-s. The shear bond strength (SBS) and adhesive remnant index (ARI) were evaluated in each subgroup using universal testing machine and stereomicroscope respectively. The data were analyzed statistically by a two-way ANOVA for SBS, and Scheirer Ray Hare Test for ARI. The significance level was set at P ≤ 0.05.</p></div><div><h3>Results</h3><p>The results showed a statistically significant difference in shear bond strength at the three-time points for each adhesive system (p &lt; 0.001) with the highest SBS value in 20-sec groups followed by 3-sec groups while 1-sec groups was the lowest. However, there was no statistically significant difference in Shear bond strength between the three adhesive systems except 20-sec groups (p &lt; 0.001). ARI showed a statistically significant difference between all adhesive systems with the highest scores in TE groups, while the lowest in SE groups.</p></div><div><h3>Conclusion</h3><p>All adhesive systems provided acceptable values of SBS at all curing times except the 1-sec group in SE and SA adhesive systems where the SBS values were the lowest and below the acceptable range.</p></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"133 ","pages":"Article 103762"},"PeriodicalIF":3.2,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}