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Odontology

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https://www.readbyqxmd.com/read/28776281/expression-of-optineurin-isolated-from-rat-injured-dental-pulp-and-the-effects-on-inflammatory-signals-in-normal-rat-kidney-cells
#1
Kyoko Senoo, Keisuke Yamashairo, Tadashi Yamamoto, Fumio Myokai, Mari Kawamura, Shogo Takashiba
We previously isolated rat 14.7K-interacting protein-2 (rFIP-2) from the rat-wounded pulp. The protein, homologous to human FIP-2, is known as optineurin and was initially identified as a novel tumor necrosis factor-α (TNF-α)-inducible protein, and more recently, as an autophagy receptor. However, the biological role of optineurin in dental pulp remains elusive. We hypothesized that optineurin has a crucial role in regulating molecular processes during pulp inflammatory responses induced by TNF-α. We examined the kinetics of optineurin expression in pulp inflammation...
August 3, 2017: Odontology
https://www.readbyqxmd.com/read/28770416/a-stepwise-under-prepared-osteotomy-technique-improves-primary-stability-in-shallow-placed-implants-a-preliminary-study-for-simultaneous-vertical-ridge-augmentation
#2
Daisuke Ueno, Kei Nakamura, Kousuke Kojima, Takeshi Toyoshima, Hideaki Tanaka, Kazuhiko Ueda, Kiyoshi Koyano, Toshiro Kodama
Simultaneous vertical ridge augmentation (VRA) can reduce treatment procedures and surgery time, but the concomitant reduction in primary stability (PS) of a shallow-placed implant imparts risk to its prognosis. Although several studies have reported improvements in PS, there is little information from any simultaneous VRA model. This study aimed to evaluate whether tapered implants with stepwise under-prepared osteotomy could improve the PS of shallow-placed implants in an in vitro model of simultaneous VRA...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28770415/measurement-accuracy-of-alveolar-soft-tissue-contour-using-a-laboratory-laser-scanner
#3
Daisuke Ueno, Mariko Kobayashi, Kenko Tanaka, Tsuneaki Watanabe, Tetsuro Nakamura, Kazuhiko Ueda, Takatoshi Nagano
Steric analysis of morphological changes is important for evaluation of surgical techniques. This study was performed to assess the measurement accuracy of alveolar soft tissue contour with a laboratory laser scanner. The width of the maxillary alveolar soft tissue contour was evaluated in 20 volunteers. Measurement sites were established in the alveolar soft tissue contour of the maxillary incisor and canine areas. Each site was evaluated by direct measurement with a microcaliper for each subject (DMM) and image measurement using a laboratory laser scanner (IMS)...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28770414/oral-status-quality-of-life-and-anxiety-and-depression-in-hemodialysis-patients-and-the-effect-of-the-duration-of-treatment-by-dialysis-on-these-variables
#4
F Camacho-Alonso, C Cánovas-García, C Martínez-Ortiz, T De la Mano-Espinosa, T Ortuño-Celdrán, J I Marcello-Godino, R Ramos-Sánchez, M Sánchez-Siles
This study aimed is to evaluate the oral health status, quality of life, anxiety and depression among hemodialysis patients and to analyze the effect of the duration of dialysis on these variables. 120 patients on hemodialysis and 120 control subjects underwent oral examination, periodontal evaluation, xerostomia study using a Visual Analogue Scale (VAS), sialometry evaluation; quality of life (QOL) using the OHIP-14 questionnaire and anxiety/depression. Bleeding index, CPTIN, clinical attachment level, and probing depth were significantly higher in the hemodialysis group than the control group (p < 0...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28748270/color-difference-of-composite-resins-after-cementation-with-different-shades-of-resin-luting-cement
#5
Esra Cengiz, Sevcan Kurtulmus-Yilmaz, Izgen Karakaya, Huseyin Aktore
The purpose of this study was to evaluate the color difference of nanohybrid and ormocer-based composite resins with different thicknesses when 4 different shades of resin luting cement were used. 56 disc specimens of each composite resin (Aelite aesthetic enamel, Ceram-X mono) with 0.5 and 1 mm thicknesses were fabricated. Baseline color measurements were performed using a clinical spectrophotometer. The specimens of each thicknesses of each resin were randomly divided into 4 groups according to the shades of resin luting cement (white/A1, yellow/universal/A3, transparent and white opaque) (n = 7)...
July 26, 2017: Odontology
https://www.readbyqxmd.com/read/28748269/presence-of-bpifb1-in-saliva-from-non-obese-diabetic-mice
#6
Tomoko Nashida, Junko Shimomura-Kuroki, Fumi Mizuhashi, Maiko Haga-Tsujimura, Ken Yoshimura, Sachiko Hayashi-Sakai
We previously showed that mRNA expression of BPIFB1 (Bpifb1), an antibacterial protein in the palate, lung, and nasal epithelium clone protein family, was increased in parotid acinar cells in non-obese diabetic (NOD, NOD/ShiJcl) mice, which is an animal model for Sjögren's syndrome. However, we did not previously assess the protein levels. In this report, we confirmed the expression of BPIFB1 protein in the parotid glands of NOD mice. Immunoblotting of subcellular fractions revealed that BPIBB1 was localised in secretory granules in parotid glands from NOD mice, and was almost not in parotid glands from the control mice...
July 26, 2017: Odontology
https://www.readbyqxmd.com/read/28631175/orthodontic-force-application-upregulated-pain-associated-prostaglandin-i2-pgi2-receptor-trpv1-pathway-related-gene-expression-in-rat-molars
#7
Mariko Ohkura, Naoto Ohkura, Nagako Yoshiba, Kunihiko Yoshiba, Hiroko Ida-Yonemochi, Hayato Ohshima, Isao Saito, Takashi Okiji
This study aimed to analyze the mRNA expression and protein localization of prostaglandin I2 (PGI2) synthase (PGIS), the PGI2 receptor (IP receptor) and transient receptor potential cation channel, subfamily V, member 1 (TRPV1) in force-stimulated rat molars, toward the elucidation of the PGI2-IP receptor-TRPV1 pathway that is in operation in the pulp and possibly associated with orthodontic pain and inflammation. Experimental force was applied to the maxillary first and second molars by inserting an elastic band between them for 6-72 h...
June 19, 2017: Odontology
https://www.readbyqxmd.com/read/28616672/biological-effects-of-silk-fibroin-3d-scaffolds-on-stem-cells-from-human-exfoliated-deciduous-teeth-sheds
#8
M Collado-González, M P Pecci-Lloret, D García-Bernal, S Aznar-Cervantes, R E Oñate-Sánchez, J M Moraleda, J L Cenis, F J Rodríguez-Lozano
The aim is to investigate in vitro biological effects of silk fibroin 3D scaffolds on stem cells from human exfoliated deciduous teeth (SHEDs) in terms of proliferation, morphological appearance, cell viability, and expression of mesenchymal stem cell markers. Silk fibroin 3D scaffolding materials may represent promising suitable scaffolds for their application in regenerative endodontic therapy approaches. SHEDs were cultured in silk fibroin 3D scaffolds. Then, cell numbers were counted and the Alamar blue colorimetric assay was used to analyse cell proliferation after 24, 48, 72, and 168 h of culture...
June 14, 2017: Odontology
https://www.readbyqxmd.com/read/28547570/the-effect-of-iloprost-on-cell-proliferation-and-angiogenesis-related-gene-expression-in-human-periodontal-ligament-cells
#9
Thanomsuk Jearanaiphaisarn, Teeranuch Sanharati, Prasit Pavasant, Chalida Nakalekha Limjeerajarus
Periodontal ligament is considered a rich source of mesenchymal stem cells for pulp regeneration. This study investigated the effect of iloprost, a prostacyclin analog, on cell proliferation and the expression of angiogenesis-related genes in human periodontal ligament cells (hPDLs) in vitro. The hPDLs were treated with 10(-9)-10(-6) M iloprost for 1, 6 and 24 h. Cell proliferation was determined by an MTT assay. Vascular endothelial growth factor (VEGF), alpha-1 type I collagen (COL1), and basic fibroblast growth factor (bFGF) mRNA expression were determined by semi-quantitative and qPCR...
May 25, 2017: Odontology
https://www.readbyqxmd.com/read/28547569/the-effect-of-long-term-use-of-tooth-bleaching-products-on-the-human-enamel-surface
#10
Olga Polydorou, Sophia Scheitza, Mathias Spraul, Kirstin Vach, Elmar Hellwig
The aim of this in vitro study was to evaluate the long-term effect of bleaching on human enamel. Four groups of enamel specimens were prepared (n = 20): group 1: bleaching with Opalescence Boost [40% hydrogen peroxide (H2O2), 3 × 20 min/week]; group 2: control group (the specimens were stored in human saliva); group 3: beaching with Vivastyle Paint on Plus (6% H2O2, 2 × 10 min/day), and group 4: bleaching with Opalescence PF 16% [16% carbamide peroxide (CP), 6 h/day]. After each bleaching session the specimens were stored in human saliva...
May 25, 2017: Odontology
https://www.readbyqxmd.com/read/28070701/use-of-a-continual-sweep-motion-to-compare-air-polishing-devices-powders-and-exposure-time-on-unexposed-root-cementum
#11
Mandy L Herr, Ralph DeLong, Yuping Li, Scott A Lunos, Jill L Stoltenberg
Low abrasive air polishing powders are a viable method for subgingival biofilm removal. This in vitro study evaluated the effects of air polishing using a standard tip on cementum following clinically recommended protocols. Forty-eight teeth were randomly divided into eight groups with six teeth per group. Teeth were treated using either a Hu-Friedy EMS or DENTSPLY Cavitron(®) air polishing device. One of three glycine powders (Air-flow 25 µm, Clinpro 45 μm, Clinpro+TCP 45 μm) or a sodium bicarbonate powder (NaHCO3  85 μm) was sprayed on cementum using a clinically relevant sweeping motion...
July 2017: Odontology
https://www.readbyqxmd.com/read/27878641/dental-arch-spatial-changes-after-premature-loss-of-first-primary-molars-a-systematic-review-of-controlled-studies
#12
Eleftherios G Kaklamanos, Dimitra Lazaridou, Dimitra Tsiantou, Nikolaos Kotsanos, Athanasios E Athanasiou
Studies investigating dental arch spatial changes following first primary molar premature loss are controversial regarding clinical significance. The purpose of this review was to systematically investigate the relevant literature. Controlled studies investigating changes before and after premature loss of first primary molars were searched in various databases. Split-mouth design studies were considered eligible for inclusion. The risk of bias was judged according to ADA Clinical Practice Guidelines. Only two analyzable split-mouth studies on mandibular first primary molar loss were identified...
July 2017: Odontology
https://www.readbyqxmd.com/read/27853978/sex-differences-of-dental-pathology-in-early-modern-samurai-and-commoners-at-kokura-in-japan
#13
Joichi Oyamada, Yoshikazu Kitagawa, Masahito Hara, Junya Sakamoto, Takayuki Matsushita, Toshiyuki Tsurumoto, Yoshitaka Manabe
So-called "Ohaguro", teeth blackening, in the married females was a general custom regardless of class in the early modern period. As a result, Ohaguro was thought to have enhanced the acid resistance of tooth substance and tightened gingiva and prevented tooth morbidity due to periodontal disease. For investigation into the influence of Ohaguro, the skeletal remains of early modern samurai and commoners at Kokura were examined for differences in the dental pathology based on sex. Though females from archeological sites have significantly more carious teeth and antemortem tooth loss (AMTL) than males in the previous studies, the prevalence of caries and AMTL in males was higher than in females among the early modern samurai and commoners in Kokura...
July 2017: Odontology
https://www.readbyqxmd.com/read/27807653/localization-and-expression-pattern-of-amelotin-odontogenic-ameloblast-associated-protein-and-follicular-dendritic-cell-secreted-protein-in-the-junctional-epithelium-of-inflamed-gingiva
#14
Yohei Nakayama, Ryoki Kobayashi, Sari Matsui, Hiroyoshi Matsumura, Yasunobu Iwai, Keisuke Noda, Mizuho Yamazaki, Tomoko Kurita-Ochiai, Atsutoshi Yoshimura, Tamayuki Shinomura, Bernhard Ganss, Yorimasa Ogata
The purpose of this study is to elucidate the localization of amelotin (AMTN), odontogenic ameloblast-associated protein (ODAM) and follicular dendritic cell-secreted protein (FDC-SP) at the junctional epithelium (JE) in Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans infected mice and inflamed and non-inflamed human gingiva. We performed immunostaining to determine the localization and expression pattern of AMTN, ODAM and FDC-SP. AMTN, ODAM and FDC-SP in A. actinomycetemcomitans infected mice did not change dramatically compared with non-infected mice...
July 2017: Odontology
https://www.readbyqxmd.com/read/27803985/marginal-integrity-of-low-shrinking-versus-methacrylate-based-composite-effect-of-different-one-step-self-etch-adhesives
#15
Ladislav Gregor, Lefever Dorien, Tissiana Bortolotto, Albert J Feilzer, Ivo Krejci
The aim of the study was to evaluate the influence of composite type and adhesive system on the quality of marginal adaptation in standardized Class V cavities before and after thermo-mechanical loading (TML). The cavities were restored using different combinations of three adhesive systems [(Silorane System Adhesive (SSA), Clearfil S(3) Bond (S3), G-Bond (G-B)] and two resin composite materials (Filtek Silorane, Clearfil AP-X). Six groups (n = 10): Group A (SSA-Primer + SSA-Bond, Filtek Silorane), Group B (SSA-Primer + SSA-Bond, Clearfil AP-X), Group C (S3 + SSA-Bond, Filtek Silorane), Group D (S3 + SSA-Bond, Clearfil AP-X), Group E (G-B + SSA-Bond, Filtek Silorane) and Group F (G-B + SSA-Bond, Clearfil AP-X) were defined...
July 2017: Odontology
https://www.readbyqxmd.com/read/27796598/soft-tissue-changes-after-a-mandibular-osteotomy-for-symmetric-skeletal-class-iii-malocclusion
#16
Seigo Ohba, Haruka Kohara, Takamitsu Koga, Takako Kawasaki, Kei-Ichirou Miura, Noriaki Yoshida, Izumi Asahina
The soft tissue profile is crucial to esthetics after orthognathic surgery. The aim of this study was to assess the soft tissue changes of the subnasal and submental regions more than 1 year after a sagittal split ramus osteotomy (SSRO) in patients with skeletal class III malocclusion. A total of 22 patients with mandibular prognathism were included in this study. Patients had lateral cephalograms before and more than 1 year after they underwent an isolated SSRO. Soft and hard tissue changes were assessed using the lateral cephalograms...
July 2017: Odontology
https://www.readbyqxmd.com/read/27778135/effect-of-adhesive-system-application-for-cavities-prepared-with-erbium-chromium-yttrium-scandium-gallium-garnet-laser-on-rat-dental-pulp-tissue
#17
Mayo Takada, Masaya Suzuki, Maiko Haga-Tsujimura, Koichi Shinkai
We examined the effects of adhesive systems under study applied for a laser-cut cavity using an Er,Cr:YSGG laser on rat dental pulp at 24 h and 14 days postoperatively. Group 1, laser-cut cavities were treated with a self-etching-primer and bonding agent; group 2, pretreated with a phosphoric-acid, and then treated with a self-etching-primer and bonding agent; group 3, pretreated with a phosphoric-acid and sodium-hypochlorite, and then treated with a self-etching-primer and bonding agent; and group 4, treated with an all-in-one adhesive...
July 2017: Odontology
https://www.readbyqxmd.com/read/27771807/effects-of-photodynamic-therapy-2%C3%A2-chlorhexidine-triantibiotic-mixture-propolis-and-ozone-on-root-canals-experimentally-infected-with-enterococcus-faecalis-an-in-vitro-study
#18
Fabio Camacho-Alonso, P Salmerón-Lozano, Y Martínez-Beneyto
The aim of this study was to evaluate the antibacterial effect of photodynamic therapy (PDT), 2 % chlorhexidine (CHX). The teeth were contaminated with 0.1 mL Enterococcus faecalis (3 × 10(8) cell/mL) and randomized into eight treatment groups: Group 1 (2.5 % NaOCl); Group 2 (PDT); Group 3 (2 % CHX); Group 4 (TAM); Group 5 (propolis), Group 6 (ozone), Group 7 (positive control) and Group 8 (negative control). Following treatment, the canal content was sampled. The samples were cultured in triplicate on blood agar plates to determine the number of colony forming units (CFU)/mL...
July 2017: Odontology
https://www.readbyqxmd.com/read/27770302/the-utility-of-bone-scintigraphy-in-the-assessment-of-mandibular-metabolism-during-long-term-bisphosphonate-administration
#19
Yumiko Ohbayashi, Fumi Nakai, Akinori Iwasaki, Takaaki Ogawa, Yuka Yamamoto, Yoshihiro Nishiyama, Minoru Miyake
The duration of antiresorptive therapy is an important risk factor for medication-related osteonecrosis of the jaw. We performed a pilot study using quantitative analysis by bone scintigraphy to test the hypothesis that mandibular metabolism is affected by long-term bisphosphonate (BP) therapy. Our primary objectives were to assess changes in bone metabolism of the mandible in response to long-term BP therapy and compare the bone metabolism changes of the mandible with other bone sites. We compared the metabolic difference at the site in the mandible unaffected by disease, the humerus and the femur between 14 osteoporosis patients who were being treated with BP (BP group) and 14 patients who were not being treated with BP (control group) using a quantitative analysis and bone scintigraphy...
July 2017: Odontology
https://www.readbyqxmd.com/read/27743231/effect-of-er-cr-ysgg-laser-irradiation-on-bovine-enamel-surface-during-in-office-tooth-bleaching-ex-vivo
#20
Dimitrios Dionysopoulos, Dimitrios Strakas, Eugenia Koliniotou-Koumpia, Effimia Koumpia
The aim of this in vitro study was to evaluate the effect of using Er,Cr:YSGG laser during in-office tooth bleaching on bovine enamel surface to evaluate the safety of this therapy on tooth tissues. Thirty-six enamel specimens were prepared from bovine incisors and divided into three groups: Group 1 specimens (control) received no bleaching treatment; Group 2 received a conventional in-office bleaching treatment (40 % H2O2); Group 3 received laser-assisted bleaching procedure (40 % H2O2) utilizing an Er,Cr:YSGG laser...
July 2017: Odontology
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