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Chiyoda-ku, Japan

The Nippon Dental University is a private university in Tokyo and Niigata, Japan, established in 1947. The predecessor of the school was founded in 1907. One out of every seven dentists in Japan is a graduate of this school.The university attracted international opprobrium in 2006 when its museum of medicine and dentistry declined to return a copy of Andreas Vesalius's De Humani Corporis Fabrica , stolen from the library of Christ Church, University of Oxford in 1995. The book was one of 74 books stolen from the library, 73 of which were subsequently recovered, with the full cooperation of libraries and dealers all over the world. http://www.timeshighereducation.co.uk/features/law-is-not-on-our-side-but-honour-is-we-wont-give-up/203097.article Wikipedia.

Abe K.,The Nippon Dental University
Pure and Applied Geophysics | Year: 2011

We explained spectra of distant tsunamis observed in enclosed basins by applying the synthesis method based on joint analysis of tsunami and background spectra from a number of stations. This method is the generalization of the method proposed by RABINOVICH (J. Geopys. Res. 102, 12663-12676, 1997) to separate source and topography effects in recorded tsunami waves. The source function is extracted by inversion of the tsunami/background spectra averaged from many observational sites. The method is applied to the 2009 Papua tsunami observed at the Owase tide station in southwest Japan, a region with complicated topography and numerous bays and inlets. The synthesized spectrum explains the observed spectral amplitudes for each frequency component. It is shown that averaging of tsunami and background from various tide gauge stations in semi-enclosed basins is an efficient approach to extract the source function. © 2011 Springer Basel AG.

Kawashima M.,The Nippon Dental University
European journal of histochemistry : EJH | Year: 2012

Transient receptor potential vanilloid subfamily member 1 (TRPV1) is activated by capsaicin, acid, and heat and mediates pain through peripheral nerves. In the tongue, TRPV1 expression has been reported also in the epithelium. This indicates a possibility that sensation is first received by the epithelium. However, how nerves receive sensations from the epithelium remains unclear. To clarify the anatomical basis of this interaction, we performed immunohistochemical studies in the rodent tongue to detect TRPV1 and calcitonin gene-related peptide (CGRP), a neural marker. Strong expression of TRPV1 in the epithelium was observed and was restricted to the apex of the tongue. Double immunohistochemical staining revealed that CGRP-expressing nerve terminals were in close apposition to the strongly TRPV1-expressing epithelium of fungiform papilla in the apex of rodent tongues. These results suggest that the TRPV1-expressing epithelium monitors the oral environment and acquired information may then be conducted to the adjacent CGRP-expressing terminals.

Karibe H.,The Nippon Dental University
International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children | Year: 2010

To compare subjective symptoms among three diagnostic subgroups of young patients with temporomandibular disorders (TMDs). We comprehensively examined 121 patients with TMDs (age ≤20 years; 90 female patients and 31 male patients) who completed self-reported forms for assessing subjective symptoms, which consisted of five items on pain intensity in the orofacial region and six items on the level of difficulty in activities of daily living (ADL) (rating scale, 0-10). They were divided into three diagnostic subgroups: temporomandibular joint (TMJ) problem (JT) group, masticatory muscle pain (MM) group, and the group with a combination of TMJ problems and masticatory muscle pain (JM group). Their symptoms were compared using the Kruskal-Wallis and Mann-Whitney U-tests. The intensity of jaw or face tightness and difficulty in talking and yawning were not significantly different among the groups. However, the MM and JM groups had a significantly higher rating for jaw or face pain, headache, neck pain, tooth pain, and difficulty in eating soft foods (P < 0.01). Young patients with MM or JM report more intense pain in the orofacial region and have more difficulties in ADL than those with JT problems alone. © 2010 The Authors. International Journal of Paediatric Dentistry © 2010 BSPD, IAPD and Blackwell Publishing Ltd.

Lin J.,The Nippon Dental University
International journal of oral science | Year: 2010

AIM: To evaluate the interactive effects of different self-adhesive resin cements and tribochemical treatment on bond strength to zirconia. METHODOLOGY: The following self-adhesive resin cements for bonding two zirconia blocks were evaluated: Maxcem (MA), Smartcem (SM), Rely X Unicem Aplicap (UN), Breeze (BR), Biscem (BI), Set (SE), and Clearfil SA luting (CL). The specimens were grouped according to conditioning as follows: Group 1, polishing with 600 grit polishing paper; Group 2, silica coating with 110 microm Al2O3 particles which modified with silica; and, Group 3, tribochemical treatment--silica coating + silanization. Specimens were stored in distilled water at 37 degrees C for 24 hours before testing shear bond strength. RESULTS: Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, BI, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP-containing self-adhesive resin cement CL had the highest bond strengths to zirconia. CONCLUSION: Applying silica coating and tribochemical treatment improved the bond strength of self-adhesive resin cement to zirconia, especially for CL.

Ono H.,The Nippon Dental University | Miyamoto A.,High Energy Accelerator Research Organization
European Physical Journal C | Year: 2013

Precise measurement of the Higgs boson couplings is an important task for International Linear Collider (ILC) experiments and will clarify the understanding of the particle mass generation mechanism. In particular, high precision measurement of Higgs branching ratios plays a key role in the search for the origin of the Yukawa and Higgs interactions. In this study, the measurement accuracies of Higgs boson branching ratios to b and c quarks and gluons were evaluated using a full detector simulation based on the International Large Detector, and assuming a Higgs mass of 120 GeV/c2. We analyze two center-of-mass (CM) energies, 250 and 350 GeV, close to the e+e-→ZH and e+e- → tt̄ production thresholds. At both energies, an integrated luminosity of 250 fb-1 and an electron (positron) beam polarization of -80 % (+30 %) were assumed. We obtain the following measurement accuracies for the product of the Higgs production cross section and the branching ratio of the Higgs into bb̄, cc̄, and gg: 1. 0 %, 6. 9 %, and 8. 5 % at a CM energy of 250 GeV and 1. 0 %, 6. 2 %, and 7. 3 % at 350 GeV. (After writing our article, Large Hadron Collider experiments reported the observation of a new resonance around the mass of 125 GeV/c2 (ATLAS Collaboration, arXiv:1207. 7214v1 [hep-ex]; CMS Collaboration, arXiv:1207. 7235v1 [hep-ex]). Considering the small difference in branching ratios of the Higgs at masses of 120 and 125 GeV/c2, our results are not significantly affected by this mass difference.) © 2013 The Author(s).

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