Abstract:
BACKGROUND:Ultrasonic excitation (US) was applied to glass ionomer cement (GIC) during early set time to increase the advantageous properties of this material. PURPOSE:The aim of this in vitro study was to assess the inner porosity of GIC after US. STUDY DESIGN:A total of 16 specimens, for each material, were prepared from high-viscosity GIC Fuji IX GP, Ketac Molar, and Ketac Molar Easymix. Half of these specimens (n = 8) received 30 s of US during the initial cement setting. After completion of the material setting, specimens were fractured and observed by scanning electronic microscopy to quantitatively assay porosity inside the material using Image J software. RESULTS:Statistical data analysis revealed that US reduced the porosity for all tested materials (P ≤ 0.05). The following reductions (expressed in percentages) were achieved: Fuji IX--from 3.9% to 2.8%; Ketac Molar Easy Mix--from 4.4% to 2.6%, and Ketac Molar--from 2.4% to 1.6%. CONCLUSION:Under the tested conditions, US was an effective method for porosity reduction inside the material.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Coldebella CR,Santos-Pinto L,Zuanon ACdoi
10.1002/jemt.20873subject
Has Abstractpub_date
2011-01-01 00:00:00pages
54-7issue
1eissn
1059-910Xissn
1097-0029journal_volume
74pub_type
杂志文章abstract::We report an ingenious method of super-resolution optical microscopy utilizing scannable cantilever-combined microsphere. By scanning the microsphere over the sample surface in a cantilever-combined microsphere-sample contact state, super-resolution images can be acquired at arbitrary sample regions through near-field...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22595
更新日期:2015-12-01 00:00:00
abstract::Among the five senses, the sense of smell (olfaction) is the most sensitive and emotional window on the outside world (Stern and Marx, 1999). The olfactory system recognizes and discriminates myriad odorants of diverse molecular structures. What makes the olfactory system so specific and sensitive? OE harboring the ol...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.10130
更新日期:2002-08-01 00:00:00
abstract::This article presents an integrated approach for the authentication of five Russian icons through the study of their paint materials (elemental composition and stratigraphic mapping), state of conservation and artistic technique. The results of the applied analytical protocol, involving optical and scanning electron m...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20727
更新日期:2009-10-01 00:00:00
abstract::We discuss the use of fluorescence correlation spectroscopy for the measurement of relatively slow rotations of large macromolecules in solution or attached to other macromolecular structures. We present simulations and experimental results to illustrate the range of rotational correlation times and diffusion times th...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20121
更新日期:2004-11-01 00:00:00
abstract::This was the first comprehensive pollen micromorphological investigation of lactiferous flora (Apocynaceae) of District Rawalpindi, Pakistan. The pollen morphology of 10 species of the family Apocynaceae was observed and documented using light microscopy and scanning electron microscopy. Pollen was found subspheroidal...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23293
更新日期:2019-09-01 00:00:00
abstract::The Neotropical catfish, Corydoras paleatus (Callichthyidae) is a facultative air-breathing teleost that makes use of the caudal portion of the intestine as an accessory air-breathing organ. This portion is highly modified, being well vascularized with capillaries between epithelial cells, which makes it well suited f...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22614
更新日期:2016-03-01 00:00:00
abstract::The mechanical properties of healing ligaments and tendons are not comparable to those of normal tissue. To improve the quality of the ligament healing, therapeutic strategies include gene transfer or placement of mesenchymal stem cells at the healing site. Studies show that marker genes, growth factors, and antisense...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.10114
更新日期:2002-07-01 00:00:00
abstract::Tumor necrosis factor (TNF) exists in two bioactive forms, the membrane integrated form and the proteolytically derived soluble cytokine. Both forms of TNF are involved in a variety of different physiological and pathophysiological situations. Here we analyzed different human and mouse TNF-specific reagents for their ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20000801)50:3<243::AID-JEMT8>3.0
更新日期:2000-08-01 00:00:00
abstract::Cetoniinae is one of the showiest scarab groups, exhibiting bright-metallic body colors, and usually attract great attention from entomologists and amateur collectors. Larvae of Cetoniinae show dramatically diversity on morphology and living habits. Although being considered one of the best-studied groups of Scarabaei...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23594
更新日期:2021-02-01 00:00:00
abstract::Using the optical methods described, phase specimens can be observed with a modified light microscope in enhanced clarity, purified from typical artifacts which are apparent in standard phase contrast illumination. In particular, haloing and shade-off are absent, lateral and vertical resolution are maximized and the i...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22265
更新日期:2013-10-01 00:00:00
abstract::It is known that, besides a wide range of functions, melatonin provides protection against oxidative stress, thanks to its ability to act, directly, as a free radical scavenger and, indirectly, by stimulating antioxidant enzymes production and mitochondrial electron transport chain efficiency. Oxidative stress is one ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22663
更新日期:2016-06-01 00:00:00
abstract::Previous studies reported that intrageneric relationships of genus Veratrum of family Melanthiaceae are controversial and hard to delimit. Therefore, we observed the pollen morphological features of six species in the genus Veratrum in detail using both light microscopy and scanning electron microscopy and investigate...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23479
更新日期:2020-08-01 00:00:00
abstract::This study was carried out to identify 20 high valued medicinal plants of District Lahore, Punjab, Pakistan with the help of the palynological studies. The distinguishing characteristics for selected species were found by systematized methods using light microscopy and Scanning Electron Microscopy. In this study, impo...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23096
更新日期:2018-12-01 00:00:00
abstract::This review examines the morphology of the adrenal gland with particular reference to the adrenal vasculature. It examines the possibility that variability in adrenal gland responsiveness may be attributable to neural or hormonal modulation of adrenal blood flow. Changes in the rate of blood flow through the adrenal c...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970315)36:6<546::AID-JEM
更新日期:1997-03-15 00:00:00
abstract::3D surface profiling and high resolution imaging were performed to refine the Florin rings and epicuticular wax crystals of Pinus koraiensis needles. Needles were collected from four-year-old seedlings and air-dried for surface observations. Field emission scanning electron microscopy revealed that stomata were found ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.21010
更新日期:2011-12-01 00:00:00
abstract::Frozen skin sections are routinely used for light microscopic immunohistochemical study of the skin basement membrane zone for two reasons: some skin basement membrane zone proteins are labile to routine chemical fixation, and skin is not amenable to vibratome sectioning. However, inherent limitations of conventional ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.1136
更新日期:2001-08-15 00:00:00
abstract::In yeast, peroxisomes are the site of specific catabolic pathways that characteristically include hydrogen peroxide producing oxidases and catalase. During the last 10 years, much progress has been made in unravelling the molecular mechanisms involved in the biogenesis of this organelle. At present, 23 different genes...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/1097-0029(20001215)51:6<584::AID-JEMT8>3.0
更新日期:2000-12-15 00:00:00
abstract::Regeneration of skeletal parts of fossil echinoderms is reviewed. Among regenerations of various fossil echinoderms, those of crinoids are most common and many examples have been reported. Mesozoic and Cenozoic crinoids, the subclass Articulata, are characterized by the dominance of muscular articulations in the arms ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.1186
更新日期:2001-12-15 00:00:00
abstract::One of the lessons learned from studying the nervous systems of phylogenetically distant species is that many features are conserved. Indeed, aminergic neurons in invertebrate and vertebrate systems share a multitude of common characteristics. In this review, the varied roles of serotonin, octopamine, dopamine, and hi...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19990115/01)44:2/3<105::AI
更新日期:1999-01-15 00:00:00
abstract:PURPOSE:To evaluate the influence of irrigation protocols and drying procedures on the bond strength of two methacrylate-based sealers to dentin and the associated failure pattern using scanning electron microscopy (SEM). MATERIALS AND METHODS:Fifty single-rooted human teeth were prepared with an irrigation protocol u...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22839
更新日期:2017-06-01 00:00:00
abstract::This article reviews recent research using a low-energy electron microscope, built by Tromp at IBM, and equipped with an accelerator that permits in situ irradiation with a beam of self-ions. The available ion energies of 20 eV to 5 keV span the range from epitaxial growth by a hyperthermal beam to sputtering at the l...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.20672
更新日期:2009-03-01 00:00:00
abstract::This study represents the first definitive anatomical description of the tongue and lingual papillae of the pampas deer and compares the different information on the morphology of the other ruminant species available in the literature. In this study, the tongues of four adult and one fetal deer were used. The tongue w...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22263
更新日期:2013-10-01 00:00:00
abstract::The ultrastructural characteristics of peptidergic peripheral contacts in the snail, Helix pomatia, were investigated, with special attention to the innervation of the heart, buccal mass, and salivary gland by Mytilus inhibitory peptide-immunoreactive neurons. Following the application of correlative light- and electr...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20000615)49:6<534::AID-JEMT4>3.0
更新日期:2000-06-15 00:00:00
abstract::Surface ultrastructures of gill filaments and secondary lamellae of Rita rita and Cirrhinus mrigala, inhabiting different ecological habitat, were investigated to unravel adaptive modifications. R. rita is a sluggish, bottom dwelling carnivorous catfish, which inhabits regions of river with accumulations of dirty wate...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.21074
更新日期:2012-04-01 00:00:00
abstract::This manuscript reviews gap junctions' roles in control of intestinal motility. Gap junctions (GJs) of small intestine (SmIn) are found between circular muscle (CM) cells, between interstitial cells of Cajal (ICC) of deep muscular plexus (DMP) and between them and adjacent outer circular muscle (OCM). GJs between long...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19991201)47:5<309::AID-JEM
更新日期:1999-12-01 00:00:00
abstract::Several studies searching for methods to control Rhipicephalus sanguineus s.l., (dog tick) infestations have been developed aiming to minimize the damages caused by these ectoparasites to the hosts and the environment, which is harmed by the indiscriminate use of toxic acaricide products. In this scenario, neem oil ha...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22871
更新日期:2017-08-01 00:00:00
abstract::The cut gene of Drosophila melanogaster is an identity selector gene that establishes the program of development and differentiation of external sense organs. Mutations in the cut gene cause a transformation of the external sense organs into chordotonal organs, originally assessed by the use of immunostaining methods ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0029(19971215)39:6<492::AID-JEM
更新日期:1997-12-15 00:00:00
abstract::We compared physiological and ultrastructural indices of acute lung injury (ALI) during septic shock caused by taxonomically diverse pathogens to distinguish ALI due to endogenous inflammatory mediators vs. microbial exotoxins or other factors. Conscious rats were infected i.v. with gram-negative Escherichia coli (EC,...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.1070260512
更新日期:1993-12-01 00:00:00
abstract::In the present work, we propose the use of the Laser Scanning Confocal Microscopy (LSCM) to determine the effect of water repellents on rock's pore-network configuration and interconnection. The rocks studied are sandstones of Miocene age, a building material that is commonly found in the architectural heritage of Tun...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20624
更新日期:2008-11-01 00:00:00
abstract::The morphology of pancreatic excretory duct segments was reviewed in mammals. The fine structure of the epithelial lining was described in intercalated ducts, intra- and extralobular ducts, and in major pancreatic ducts. Morphological characteristics of the various cell types comprising to the duct epithelium were det...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970601)37:5/6<407::AID-J
更新日期:1997-06-01 00:00:00