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European Journal of Oral Sciences

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https://www.readbyqxmd.com/read/29984852/response-of-the-mouse-sublingual-gland-to-spaceflight
#1
Didem Dagdeviren, John Beallias, Izaz Khan, Maija I Mednieks, Arthur R Hand
The ultrastructure and immunohistochemistry of secretory proteins of sublingual glands were studied in mice flown on the US space shuttles Discovery [Space Transportation System (STS)-131] and Atlantis (STS-135). No differences in mucous acinar or serous demilune cell structure were observed between sublingual glands of ground (control) and flight mice. In contrast, previous studies showed autophagy and apoptosis of parotid serous acinar cells in flight mice. The expression of parotid secretory protein (PSP) in sublingual demilune cells of STS-131 flight mice was significantly increased compared with ground (control) mice but decreased in STS-135 flight mice...
July 9, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29978921/shear-fatigue-strength-of-resin-composite-bonded-to-dentin-at-physiological-frequency
#2
Akimasa Tsujimoto, Wayne W Barkmeier, Robert L Erickson, Nicholas G Fischer, Mark D Markham, Toshiki Takamizawa, Mark A Latta, Masashi Miyazaki
The purpose of this study was to examine the shear fatigue strengths of a resin composite bonded to dentin. Three adhesive systems - a two-step self-etch adhesive (OptiBond XTR; Kerr) and two universal adhesives [Scotchbond Universal (3M ESPE) and G-Premio Bond (GC)] - were used in self-etch mode to bond a resin composite to dentin at a physiologic frequency of 2 Hz over 50,000, 100,000, and 1,000,000 cycles. A staircase method of fatigue testing was used. Twenty specimens were used for each test condition...
July 6, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29972599/in-vivo-compatibility-between-pacemakers-and-dental-equipment
#3
Isabel Conde-Mir, Jaume Miranda-Rius, Emilce Trucco, Eduard Lahor-Soler, Lluís Brunet-Llobet, Rebeca Domingo, José M Tolosana, Lluís Mont
In-vitro studies suggest that electromagnetic interference can occur under specific conditions involving proximity between electronic dental equipment and pacemakers. At present, in-vivo investigations to verify the effect of using electronic dental equipment in clinical conditions on patients with pacemakers are scarce. This study aimed to evaluate, in vivo, the effect of three commonly used electronic dental instruments - ultrasonic dental scaler, electric pulp tester, and electronic apex locator - on patients with different pacemaker brands and configurations...
July 4, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29961994/in-vivo-biocompatibility-and-biomineralization-of-calcium-silicate-cements
#4
Francine Benetti, João E Gomes-Filho, Juliana M de Araújo Lopes, Jéssica G Barbosa, Rogério C Jacinto, Luciano T A Cintra
A new mineral trioxide aggregate (MTA) material has been developed with a modified composition that requires investigations to support its clinical use. This study evaluated the biocompatibility and biomineralization of this new MTA material and compared it with that of two other MTA cements over time. Tubes containing materials (or empty tubes as controls) were inserted into the subcutaneous tissues of 40 rats. On days 7, 15, 30, 60, and 90, the tubes were removed with the surrounding tissues, which were either stained with haematoxylin and eosin or von Kossa for further analyses or unstained for observation under polarized light...
July 1, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29952027/effect-of-bone-marrow-mesenchymal-stem-cells-on-healing-of-temporomandibular-joints-in-rats-with-induced-rheumatoid-arthritis
#5
Rana M N El Qashty, Nesreen N Mohamed, Lobna R S Radwan, Fatma M M Ibrahim
The healing capacity of bone marrow mesenchymal stem cells (BMMSCs) has been evaluated in various studies. This study aimed to evaluate the effect of BMMSCs on the healing of temporomandibular joints (TMJs) with induced rheumatoid arthritis. Fifty healthy male Sprague Dawley rats were divided into three groups: group I (n = 10), negative control; group II (n = 20), positive control (induction of arthritis by adjuvant followed by intravenous injection of 0.1 ml of PBS); and group III (n = 20), intervention (as for group II but injected intravenously with 1 × 106  cells ml-1 of BMMSCs suspended in PBS)...
June 27, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29943867/short-term-longitudinal-changes-in-adult-dental-fear
#6
Outi Hagqvist, Mimmi Tolvanen, Kari Rantavuori, Linnea Karlsson, Hasse Karlsson, Satu Lahti
This study aimed to evaluate (i) longitudinal fluctuations and considerable changes in adult fear at five data-collection points during a 2.5-yr period and (ii) the stability of symptoms of depression in dental fear-change groups. Pilot data from the FinnBrain Birth Cohort study, of 254 families expecting a baby, were used. Data-collection points (DCPs) were: 18-20 and 32-34 gestational weeks; and 3, 12, and 24 months after delivery. At baseline, 119 women and 85 men completed the Modified Dental Anxiety Scale (MDAS) questionnaire...
June 26, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29939426/effects-of-regional-enamel-and-prism-orientations-on-bovine-enamel-bond-strength-and-cohesive-strength
#7
Chaoyang Wang, Yangyan Ou, Ling Zhang, Zihuai Zhou, Mingxing Li, Jingqiu Xu, Jiayan Fan, Baiping Fu, Matthias Hannig
This study investigated the regional microtensile bond strength (MTBS) and cohesive strength of bovine enamel. The crowns of bovine incisors were sectioned, either horizontally along incisal and cervical thirds to produce horizontal and tangential segments, or longitudinally along the midline to produce longitudinal segments. Half of the horizontal and longitudinal segments were prepared using a 45° bevel. Then, the differently sectioned enamel surfaces were treated with one- or two-step self-etch adhesives (Clearfil SE Bond or Clearfil S3 Bond) and a composite resin (Clearfil Majesty) was placed...
June 25, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29752756/soluble-urokinase-type-plasminogen-activator-receptor-is-associated-with-signs-of-periodontitis-in-adolescents
#8
Peter D Skottrup, Gunnar Dahlén, Vibeke Baelum, Rodrigo Lopez
Owing to its molecular stability in body fluids, soluble urokinase-type plasminogen activator receptor (suPAR) is used as a biomarker for the level of systemic inflammation. This study compares the suPAR levels in serum with those in the saliva of adolescents and evaluates their association with the periodontal conditions. Adolescents identified as screen positive (n = 87) or screen negative (n = 73) for periodontitis had saliva and serum samples taken, along with subgingival plaque samples. The concentrations of suPAR were determined in saliva and serum, and 18 microbial species and the immunoglobulin response to them was evaluated...
May 11, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/30006965/synergistic-effects-of-ischemic-preconditioning-and-immediate-post-conditioning-in-the-protection-against-ischemia-reperfusion-injury-in-rabbit-submandibular-glands
#9
Si-En Zhang, Shi-Hong Wen, Yu-Xiong Su, Guang-Sen Zheng, Di-Kan Wang, Yu-Jie Liang, Gui-Qing Liao
Submandibular gland autotransplantation is an effective approach for treating severe keratoconjunctivitis sicca. However, ischemia/reperfusion (I/R) injury, which inevitably occurs during transplantation, is involved in the hypofunction and structural damage that occur early after transplantation. Therefore, it is critical to identify effective strategies to ameliorate I/R injury in submandibular glands. In this study, we investigated the ability of immediate post-conditioning combined with ischemic preconditioning to attenuate I/R injury...
August 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/30006964/core-circadian-clock-gene-expression-in-human-dental-pulp-derived-cells-in-response-to-l-mimosine-hypoxia-and-echinomycin
#10
Klara Janjić, Christoph Kurzmann, Andreas Moritz, Hermann Agis
Core circadian clock genes set the pace for a wide range of physiological functions, including regeneration. The role of these genes and their regulation in the dental pulp, in particular under hypoxic conditions, is unknown. Here we investigated if core clock genes are expressed in human dental pulp-derived cells (DPC) and if their expression is modulated by the hypoxia mimetic agent, L-mimosine (L-MIM), hypoxia or echinomycin. Dental pulp-derived cells in monolayers and spheroids were treated with L-MIM, hypoxia or echinomycin...
August 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/30006963/author-guidelines
#11
(no author information available yet)
No abstract text is available yet for this article.
August 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29905981/alterations-in-desmosomal-adhesion-at-protein-and-ultrastructure-levels-during-the-sequential-progressive-grades-of-human-oral-tumorigenesis
#12
Sharada Sawant, Harsh Dongre, Chetan Ahire, Shilpi Sharma, Sayli Jamghare, Yashvi Kansara, Pallavi Rane, Deepak Kanojia, Asawari Patil, Devendra Chaukar, Sudeep Gupta, Anil D'Cruz, Milind Vaidya, Prabhakar Dongre
With the aim of developing early diagnostic/prognostic markers for oral cancer, desmosomal adhesion in sequentially progressive grades of tissues from oral normal/disorders (normal, hyperplastic, dysplastic, non-metastatic/metastatic tumours, and metastatic nodes) was investigated at protein and ultrastructural levels using immunohistochemistry and transmission electron microscopy, respectively. The expression of desmosomal proteins was higher in hyperplastic tissues than in normal tissues but was significantly decreased in subsequent progressive stages of the disease...
August 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29745471/dna-replication-licensing-factor-mcm2-geminin-and-ki67-define-proliferative-state-and-are-linked-with-survival-in-oral-squamous-cell-carcinoma
#13
Nadia Al-Hazmi, Turki Alhazzazi, Gareth Williams, Kai Stoeber, Raghad Al-Dabbagh
Oral squamous cell carcinoma (OSCC) is still an unabated global killer with little advancement in its survival rate. DNA replication licensing proteins and Aurora kinase A are biomarkers that play important roles in genomic stability. The expression profile of minichromosomal maintenance protein 2 (MCM2), Ki67, geminin, and Aurora-A were linked to clinicopathological and outcome parameters, survival, and DNA content in 125 cases of OSCC. Oral fibroepithelial polyps (OFEP) were controls. The OSCC tumour cells were in a rapidly proliferating state, as assessed by the increased expression profile of MCM2, Ki67, geminin, and Aurora-A and of the geminin/Ki67 ratio, and the decrease of the MCM2/Ki67 ratio, in OSCC compared with OFEP (P < 0...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29745470/author-guidelines
#14
(no author information available yet)
No abstract text is available yet for this article.
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29676806/obstacles-to-comprehensive-dental-care-in-patients-with-sustained-limitations-of-their-decision-making-abilities-findings-from-a-delphi-study
#15
Alessandra Blaizot, Céline Catteau, Caroline Delfosse, Olivier Hamel, Thomas Trentesaux
The objective of this study was to explore the therapeutic limitations experienced by a panel of special-care dentists in France when treating patients with sustained limitations of their decision-making abilities. We used a Delphi technique conducted in three rounds from 01 June 2014 to 30 September 2015. A first questionnaire comprising open-ended questions was addressed to 72 panellists. A content analysis of the returned questionnaires served to draft a second questionnaire comprising closed-ended questions; this was sent to the 28 panellists who responded in the first round...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29676804/the-biphasic-effect-of-extracellular-glucose-concentration-on-carbachol-induced-fluid-secretion-from-mouse-submandibular-glands
#16
Momomi Terachi, Chikara Hirono, Michinori Kitagawa, Makoto Sugita
Cholinergic agonists evoke elevations of the cytoplasmic free-calcium concentration ([Ca2+ ]i ) to stimulate fluid secretion in salivary glands. Salivary flow rates are significantly reduced in diabetic patients. However, it remains elusive how salivary secretion is impaired in diabetes. Here, we used an ex vivo submandibular gland perfusion technique to characterize the dependency of salivary flow rates on extracellular glucose concentration and activities of glucose transporters expressed in the glands. The cholinergic agonist carbachol (CCh) induced sustained fluid secretion, the rates of which were modulated by the extracellular glucose concentration in a biphasic manner...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29676511/role-of-the-high-mobility-group-box-1-signalling-axes-via-the-receptor-for-advanced-glycation-end-products-and-toll-like-receptor-4-in-the-immunopathology-of-oral-lichen-planus-a-potential-drug-target
#17
Abdelhakim Salem, Rabeia Almahmoudi, Mari Vehviläinen, Tuula Salo
High mobility group box 1 (HMGB1) is an extremely conserved DNA-binding protein that stabilizes nucleosomes and facilitates gene transcription in mammalian cells. When released extracellularly, HMGB1 becomes an alarmin that can mediate systemic diseases. High mobility group box 1 signals via two main receptors: receptor for advanced glycation end-products (RAGE) and toll-like receptor-4 (TLR4). We hypothesized that HMGB1 expression is increased in patients with oral lichen planus (OLP) relative to healthy controls...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29676477/influence-of-estrogen-deficiency-on-guided-bone-augmentation-investigation-of-rat-calvarial-model-and-osteoblast-like-mc3t3-e1-cells
#18
Tatsuya Kubota, Akira Hasuike, Naoya Tsukune, Yasumasa Ozawa, Takanobu Yamamoto, Seiko Min, Masako Naito, Shuichi Sato
The effect of estrogen deficiency in bone augmentation, and the mechanisms by which estrogen deficiency impedes osteoblast differentiation and collagen matrix production, were examined. Twenty female Jcl:Wistar rats were divided into two groups: ovariectomized rats; and control rats. Guided bone augmentation was performed by positioning plastic caps in the calvarium of all animals at 8 wk after ovariectomy or sham surgery. Micro-computed tomography and histological sections were used to determine the amount of bone augmentation within the plastic caps...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29664137/msh-homeobox-1-polymorphisms-and-the-risk-of-non-syndromic-orofacial-clefts-a-meta-analysis
#19
REVIEW
Min Gu, Yan Zhang, Hualian Liu, Jue Liu, Danxia Zhu, Xu Yang
MSH homebox 1 (MSX1) is a susceptibility gene for non-syndromic orofacial clefts (NSOCs). Here, a meta-analysis was conducted to assess their associations. A systematic search of PubMed to 1 September 2017, was performed to retrieve all eligible studies. Odds ratios (ORs) were used to calculate the associations. The stability of the results was evaluated by sensitivity analysis. Publication bias was assessed using Begg's funnel plots and the Egger test. In silico Msx1 expression during early mouse craniofacial development was evaluated by the Gene Expression Omnibus...
June 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29517121/effects-of-three-%C3%AE-alkylidene-%C3%AE-lactams-on-the-formation-of-multispecies-biofilms
#20
Josiane de Almeida, Andrea L Pimenta, Ulisses A Pereira, Luiz C A Barbosa, Michel A Hoogenkamp, Suzette V van der Waal, Wim Crielaard, Wilson T Felippe
This study evaluated the inhibitory effects of lactams on Streptococcus mutans, Enterococcus faecalis, and Candida glabrata multispecies biofilm formation. γ-Alkylidene-γ-lactams 1, 2, and 3 [solubilized in 3.5% dimethyl sulfoxide (DMSO)] were tested. Glass coverslips were conditioned with either the lactams or 3.5% DMSO (control) for 1 h, inoculated with microbial cultures, and incubated for 48 h. To assess the effect of the lactams on biofilm formation, the following parameters were determined: the biofilm biomass (by both crystal violet staining and protein determination); the amount of insoluble polysaccharides of the extracellular matrix; and the number of viable and total cells [by both colony-forming unit counting and quantitative real-time PCR (qPCR)]...
June 2018: European Journal of Oral Sciences
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