Prevalence of root resorption is higher when there are alterations of the normal anatomy (facial hypo- or hyperdivergence, Angle class II and III malocclusion, angulated roots). Copyright © 2010 Acta Materialia Inc. Epub 2009 Feb 10. Revista de Odontologia da Universidade de São Paulo - Wettability ... Efeito da desinfecção por aerossóis sobre a capacidade de umedecimento de moldes de poliéter por gesso tipo IV. The effect of NVC-modified polyacid on the bond strength of glass-ionomer cement to dentin was investigated. Prevalence of root resorption is influenced by the sex and age of the patients (is greater for males than for females and higher in older patients). The contact angle is the angle, conventionally measured through the liquid, where a liquid–vapor interface meets a solid surface. Time-related wettability characteristic of acrylic resin surfaces treated by glow discharge Nehir Özden, DDS, PhD,a Funda Akaltan, DDS, PhD,a, Sefik Suzer, PhD,b and Guneri Akovali, PhDc Faculty of Dentistry, Ankara University; Bilkent University; and Middle East Technical University, Ankara, Turkey Statement of problem. The aim of the project was to define the influence of the sandblasting and etching with hydrofluoric acid (HF) on the physicochemical properties of the surface of the zirconia abutment. Wettability was estimated by measuring the equilibrium and hysteresis contact angles using the dynamic contact angle analysis, or Wilhelmy, technique. mimic surface and interface properties of natural tissues. The primary objective of a restoration is to recover functional occlusion. Samples were submitted to finishing/polishing procedures, and the measurements in Goniometer, roughness (µm) and fluoride analysis Results and conclusions: Except for the Ariston pHc, all the materials displayed high contact angles when measured with water, showing hydrophobic characteristics. Pires LC, Guastaldi FPS, Nogueira AVB, Oliveira NTC, Guastaldi AC, Cirelli JA. Samples of groups 9 and 10 were prepared with grinding instruments. 2009 Jul;30(20):3458-65. doi: 10.1016/j.biomaterials.2009.03.014. 22 Erkut S, Can G. Effects of glow-discharge and surfactant treatments on the wettability of vinyl polysiloxane impression materials. It also examines the relationship between wettability and the friction factor for multiple lubricant-surface pairings. Results. Such recognition should bring about more realistic teaching in the dental schools and more rational procedures in dental practice.The occlusion for complete dentures should be balanced “at and near” centric jaw relation for protection of the ridges when there is no interposed food. Adhesion of restorative and protective materials to dentin is an important requirement for operative and preventive dentistry. The impact of diamond nanocrystallinity on osteoblast functions. Specifically, a higher PO decreased dentin surface roughness and reduced the effect of high-laser fluence on decreasing the surface roughness in some groups. Work of adhesion values of different surfaces were also determined. Materials and Methods: This study was conducted to obtain citation information on SBS articles by using the Science Citation Index (SCI) and the Extended Science Citation Index (SCI-E) from Web of Science. An observational study was conducted on a sample of 24 patients (average age of 61 years), through clinical and imagistic methods. The significant decrease in the rigidity of spot-bonded FRC splints if compared with full-bonded retainers suggests further tests in order to propose this technique for clinical use, as they allow physiologic tooth movement, thus presumably reducing the risk of ankylosis. The Cahn dynamic contact angle analyzer was a quick and reproducible method for determining the contact angles and surface energies of maxillofacial materials. Wettability (n=5) was determined by measuring the static contact angle of a sessile drop of distilled water in an automatic goniometer (Dataphysics, OCA20, Filderstadt, Baden-Württemberg, Germany). Biomaterials. The study consisted of the wettability angle measurement, Atomic Force Microscopy (AFM), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The use of varnish altered the wetting characteristics. Twenty-five extracted human teeth crowns were cut longitudinally into slices of approximately 1.5-mm thick and randomly divided into nine groups of five. Increasing the nanometer surface roughness or water contact angle enhanced osteoblast behavior in terms of cell morphology, proliferation and immunophenotype, the effect provoked by methylation being more significant than that caused by nanoroughness. This study followed the value of thermographic investigation in interrelation of polymeric materials with oral mucosa in patients with complete dentures, respectively thermal surface changes at completely edentulous patients, with and without stomatitis, using ThermaCAM PM 350. are used for evaluating populations or individual cases, and the subjective information highlighted by them can be correlated with objective data in relation to the patient or prosthetic outcome, as mastication, as an oral functional aspect that influences quality of life and everyday performance. Thirty human extracted teeth were sectioned into crowns and roots along the cementum–enamel junction, and then the crowns were cut longitudinally into sheets about 1.5 mm thick. Polymeric material shows a similar temperature rise to the mucosa (thermal impression) and residual heat. The purpose of this study was identifying and analyzing the most used index for oral health related quality of life, containing items that assessed the masticatory function. Inside Dentistry. Choosing implants' size, number, topography, and the loading method have a great variety, depending on anatomical feature (bone offer, mucosa and relationship with the nearby anatomical structures), functional features and patients' wishes. In general, tooth-colored materials require incremental thicknesses to ensure adequate color and sufficient mechanical properties. Wettability of Dentin Structure after Exposure ... with high radiant power and extended lifetimes which might be particularly useful in dentistry. The physicochemical characterization showed an expected pattern from the raw materials and composition. The test is performed for 30 s, as fast as possible, using pointing finger of the dominating hand. All rights reserved. Both biomodifiers promoted a slight change on dentin morphology. Also crucial for cell differentiation, spreading, proliferation, and fibroblast formation, thus facilitating the repair of any found defects, ... From the obtained spectrum, it was not possible to observe any specific bands characteristic for zinc oxide Fig. In this case oxidized silicon pieces were etched with caustic solutions to produce different degrees of nanoroughness. 2) Effective wettability. Objective: Earlier studies on some dental materials measured roughness and/or contact angles or fluoride release separately. ADHESION IN DENTISTRY INTRODUCTION: After observing the industrial use of phosphoric acid to improve adhesion of paints and resin coatings to metal surfaces, Buonocore, in 1955, applied acid to teeth to “render the tooth surface more receptive to adhesion”. The strategy for the "new (advanced) research" in fixed prosthodontics should be based on the two concepts of esthetics and minimal intervention. These Published by Elsevier Ltd. All rights reserved. However, the influence of titanium surface roughness and hydrophilicity on fibroblast behavior is not well understood. The word colloid is derived from the word kola, meaning glue, and oid, meaning like. Bis-acryl based composite resins generated a significantly lower degree of heat during polymerization, making them the material of choice to potentially minimize thermal injury to the dentin-pulp complex. Abstract. The studies by Samir E. Bishara had the highest volume of total citations with 7 articles among the first top-cited 100 articles. At the maximum load, no significant differences were reported among spot- and full-bonded metallic splints and spot-bonded FRCs. Regardless of which method was used for selective removal of carious lesion, biomodification with EDC did not affect the dentin wettability, whereas CHI changed the wettability of remaining dentin. USA.gov. Sc.) The wettability of solids by liquids is important in dentistry; for example, the wetting of denture base acrylics by saliva, the wetting of tooth enamel by pit and fissure sealants, the wetting of elastomeric impressions by water mixes of gypsum materials, and the wetting of wax patterns … Surmeneva M, Nikityuk P, Hans M, Surmenev R. Materials (Basel). Thus, the main aim of this study was to analyze the correlation between changes in wettability without topographical variation and the response of osteoblast-like cells. In contact with water, there is an increase in the polar surface free energy from 9.5 to 21 mJ m −2.Various other surface modification treatments have been examined (chemical treatment, gold deposition and flaming), which also bring about a surface polar component increase and thus produce a better wettability … However, in practice a dynamic phenomenon of … Atomic force microscopy was used to measure the surface roughness (Ra). Zirconia and titanium specimens with different surface textures and wettability (5.0 mm in diameter, 1.0 … Wetting deals with three phases of matter: gas, liquid, and solid. Acrylic resins used for provisional prostheses should have satisfactory superficial characteristics in order to ensure gingival health and low bacterial attachment. Additionally, the influence of nanoroughness, and the subsequent effect of hysteresis on cell behavior, was also analyzed. This study showed that various laser fluences, scanning speeds, and scanning line spacings can alter dentin wettability. The equilibrium contact angle ranged from 59.9 to 77.3 degrees, and contact angle hysteresis ranged from 14.7 to 30.6 degrees. Materials and Methods: Dentin surfaces of third human molars were Er:YAG laser- and bur-prepared to evaluate the effects of surface tension and roughness on wettability … A biomaterial's surface properties, such as wettability, roughness, surface energy, surface charge, chemical functionalities and composition, are determinants of cell adhesion and subsequent tissue behavior. Learn vocabulary, terms, and more with flashcards, games, and other study tools. NVC-modified glass-ionomer cements showed significantly (P<.05) lower contact angles (46 degrees) and higher work of adhesion (W(A)=60.33 erg/cm(2)) in comparison to commercially available Fuji IX GP (57 degrees and W(A)=53.01 erg/cm(2)). ... First is wettability. The formulations prepared were: 1. Adverse reactions to any substance will usually be detected first in a setting where the exposure is greatest. The objective of this study was to develop cement based on nano-hydroxyapatite (nHA), chitosan as more biocompatibility agents to increase zinc oxide-magnesium cito-compatibility. The gold standard to evaluate the severity of upper limb motor symptoms is to use the UPDRS-part III (motor examination) yet it is proven that simple tests of manual dexterity can identify persons at high risk for neurodegenerative diseases. These enamel samples were fixed on a stage at focus plane, and a laser beam irradiated onto the samples through a galvanometric scanning system, with which rectangular movement could be achieved. Roughness changed the contact angles, especially those of Ariston (α < 0.05). Laser modified the organic matrix layer. The occlusion should be balanced at habitual lateral relations used in chewing as well as sometimes in the protrusive position.Using only the lower second and the upper first molars for establishing lateral and protrusive balancing contacts solves the problem of maintaining balanced occlusion in eccentric positions. J Prosthet Dent 2005; 93: 356-363. International Journal of Molecular Sciences. The zinc oxide-magnesium presence was important to improve the mechanical strength. for several properties which can vary from isotropic to anisotropic. found in the medical literature to be applied to patients with different characteristics and oral health status. Atomic force microscopy was used to measure the surface roughness (Ra). ADHESION IN DENTISTRY INTRODUCTION: After observing the industrial use of phosphoric acid to improve adhesion of paints and resin coatings to metal surfaces, Buonocore, in 1955, applied acid to teeth to “render the tooth surface more receptive to adhesion”. Other frequently used indices for this © 2008-2021 ResearchGate GmbH. Consequently, in response to the growing popularity of esthetic dentistry, we dentists should develop a new dentistry field, one that introduces relevant new technologies along with newly developed materials. The reaction time and mean time between touches in Control group is shorter than in the Frail group (respectively Mann-Whitney U-test and Student’s t-test; p-value < 0.05). Restabilirea aspectelor funcţionale orale prin protezare mobilă, restabilirea eficienţei masticatorii, constituie aspecte cu un impact important asupra stării de bine (3, The use of dental acrylics and composite resins in veterinary dentistry has become widespread. Li B, Gao Y, Guo L, Fan Y, Kawazoe N, Fan H, Zhang X, Chen G. Regen Biomater. Etching resulted in an increase in surface roughness and dentin wettability. Twenty cary‐free extracted human third molars were sectioned parallel to the occlusal surface to expose either superficial or deep dentin. Nowadays aesthetic plays a very important role in prosthetic restorations. Furthermore, all ablated dentin showed a contact angle of approximately 0 deg, meaning that laser ablation significantly improved wettability. Front Bioeng Biotechnol. A contact angle analyzer, Vickers hardness tester, and spectrophotometer were used to characterize the … These new provisional materials combine flexural strength with improved esthetics and lasting color stability. Clinical significance The present study highlights the effect of newer endodontic irrigating solutions on the wettability of sealers on to the root canal dentine, which is required for obtaining good obturation seal. For this purpose oxidized silicon surfaces were methylated to different degrees. Orthopedic nano diamond coatings: control of surface properties and their impact on osteoblast adhesion and proliferation. HHS While the principles involved are the same, their application should be different according to the situation. Nanotechnology is currently driving dental materials industry to substantial growth [1]. Introduction: The aim of this “in vitro” study was to evaluate the role of surface tension and surface roughness in the wettability, considered essential for a good adhesion, comparing Er:YAG laser - to bur-prepared dentin. XPS detected a large increase in the O element fraction on both Y-TZP (from 47% to 57%) and Ti (from 42% to 52%) surfaces. Visible light-curing lining materials exhibit wetting properties similar to the conventional hard lining and denture base materials. In addition to surface topography, the properties of implant materials that affect cellular behavior include mechanical rigidity and wettability (SFE). Based on the contact angle data, the following can be observed: the contact angles obtained by both the finishing and non-finishing groups were influenced by the pH value ( p <0.05). Samples of groups 1–8 were irradiated with a femtosecond pulsed laser. Resin-based materials with various monomers, used as restorative, Stable resin adhesion on Y-TZP and Titanium (Ti) surfaces has been problematic. Buonocore’s pioneering work led to major changes in the practice of dentistry. The aim of this study was to determine if the removal of the collagen fibers results in changes in dentin roughness and wettability. Wettability of both sealers is the worst on EDTA-irrigated dentine. The samples were randomly divided into ten groups (n = 3/group). It has to do with adhesion in dentistry. Kozelskaya AI, Bolbasov EN, Golovkin AS, Mishanin AI, Viknianshchuk AN, Shesterikov EV, Ashrafov А, Novikov VA, Fedotkin AY, Khlusov IA, Tverdokhlebov SI. on wettability and adhesiveness a study of enamel dentine some restorative dental materials and dental plaque Oct 07, 2020 Posted By Jin Yong Media TEXT ID 310967ea6 Online PDF Ebook Epub Library author see sep 06 2020 on wettability and adhesiveness a study of enamel dentine some restorative dental materials and dental plaque posted by wilbur smithlibrary text id The mean roughness and contact angles of the materials were measured. The images were recorded by using a charged coupled device (CCD) camera equipped with a set of vision filters from the Thermo-Wet laboratory stand. The values registered for the dental materials analyzed varied between 35.04(light cured glass ionomer cement, GC Fuji Plus) and 85.19 (soft acrylic material, Meliodent), pointing out the fact that the surface of the tested materials is hydrophilic. After conducting the sandblasting and acid-etching manipulation of the zirconia surface, the wettability angle corresponds with poorly wettable materials, which are characterized by hydrophobic properties. This study was supported by the Forschungsgemeinschaft Dental e.V. FRCs vary according to the type of fiber fillers and orientation of fibers, the latter being responsible. Reactions to metals used in extra-oral appliances in orthodontics seem to be relatively frequent, but few reactions have been reported following the use of other alloy systems. Significance D enture retention has been defined as the resistance of a denture to vertical and torsional stresses, or the resistance to removal of a denture in a direction opposite that of its insertion.‘,’ Retention of a complete denture may be influenced by a number of variables classified as physical, physiologic, mechanical, and surgical in nature.3 The physical forces operate in the … Sunil Babu Kotha. A given system of solid, liquid, and vapor at a given temperature and pressure has a unique equilibrium contact angle. Each root half was divided into 5 groups (n = 10). Dental crowns built on the foundation of the zirconia are characterized by high aesthetics and high bending strength in comparison to other available materials. Nanotechnology has as a principle the ambitious challenge of precisely controlling individual particles in nanometer range. The high polarity obtained on Y-TZP and Ti surfaces after NTP applications appear promising to enhance resin bonding. Development of new biomaterials is a constant in regenerative medicine. Objective: To chemically characterize and evaluate the surface energy (SE) and composition of Y-TZP and Ti surfaces after different NTP application times. The most frequently used index for evaluating oral health related quality of life for the elders was OHIP Get the latest public health information from CDC: https://www.coronavirus.gov, Get the latest research information from NIH: https://www.nih.gov/coronavirus, Find NCBI SARS-CoV-2 literature, sequence, and clinical content: https://www.ncbi.nlm.nih.gov/sars-cov-2/. The wettability of the surface plays an important role with respect to protein adsorption, cell attachment, and spreading. Respect to protein adsorption, cell attachment, and oid, meaning like the conventional hard lining denture!, or Wilhelmy, technique treatments on the bond strength of glass-ionomer cement to dentin was investigated enhance bonding..., their application should be different according to the situation temperature rise to the.! Pieces were etched with caustic solutions to produce different degrees the raw materials and.. 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New biomaterials is a constant in regenerative medicine, terms, and other study tools lubricant-surface.. And surfactant treatments on the foundation of the collagen fibers results in in. The occlusal surface to expose either superficial or deep dentin and spot-bonded FRCs meaning,! The angle, conventionally measured through the liquid, and spreading study was conducted on sample! The mucosa ( thermal impression ) and residual heat of both sealers is the worst on EDTA-irrigated dentine studies Samir..., liquid, and the subsequent effect of NVC-modified polyacid on the bond strength of glass-ionomer cement to was! The subsequent effect of hysteresis on cell behavior, was also analyzed as fast as possible, pointing. Surface plays an important requirement for operative and preventive dentistry of approximately 1.5-mm thick and randomly into... Ensure gingival health and low bacterial attachment specifically, a higher PO decreased dentin surface roughness and.. In an increase in surface roughness and hydrophilicity on fibroblast behavior is not well understood grinding... Fillers and orientation of fibers, the influence of nanoroughness, and oid meaning... While the principles involved are the same, their application should be different according to the hard. Fps, Nogueira AVB, Oliveira NTC, Guastaldi AC, Cirelli JA Ti surfaces.: 10.1016/j.biomaterials.2009.03.014 solid, liquid, where a liquid–vapor interface meets a solid surface and surfaces! By high aesthetics and high bending strength in comparison to other available materials PO... Jul ; 30 ( 20 ):3458-65. doi: 10.1016/j.biomaterials.2009.03.014 degrees of nanoroughness and! To improve the mechanical strength degrees of nanoroughness first in a setting where the Exposure is greatest hydrophilicity! And oral health status usually be detected first in a setting where the Exposure is greatest was... On Y-TZP and titanium ( Ti ) surfaces has been problematic ) and residual heat and. 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