Kazunori Nakajima

Summary

Affiliation: Tokyo Dental College
Country: Japan

Publications

  1. ncbi request reprint [Questionnaire survey of dentists who made their own mouthguards]
    Kazunori Nakajima
    Department of Sports Dentistry, Tokyo Dental College
    Nihon Hotetsu Shika Gakkai Zasshi 49:708-15. 2005
  2. doi request reprint A vacuum technique to increase anterior thickness of athletic mouthguards to achieve a full-balanced occlusion
    Kazunori Nakajima
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 24:50-2. 2008
  3. ncbi request reprint Does hard insertion and space improve shock absorption ability of mouthguard?
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 22:77-82. 2006
  4. doi request reprint Are all mouthguards the same and safe to use? Part 2. The influence of anterior occlusion against a direct impact on maxillary incisors
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 24:360-5. 2008
  5. ncbi request reprint The influence of the sensor type on the measured impact absorption of mouthguard material
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Dent Traumatol 20:29-35. 2004
  6. doi request reprint Easy fabrication of a new type of mouthguard incorporating a hard insert and space and offering improved shock absorption ability
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 27:489-95. 2011
  7. ncbi request reprint Are all mouthguards the same and safe to use? The influence of occlusal supporting mouthguards in decreasing bone distortion and fractures
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Dent Traumatol 20:150-6. 2004
  8. ncbi request reprint Can mouthguards prevent mandibular bone fractures and concussions? A laboratory study with an artificial skull model
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 21:134-40. 2005
  9. ncbi request reprint In search of necessary mouthguard thickness. Part 1: From the viewpoint of shock absorption ability
    Masahiko Maeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Nihon Hotetsu Shika Gakkai Zasshi 52:211-9. 2008
  10. doi request reprint Influence of pre-laminated material on shock absorption ability in specially designed mouthguard with hard insert and space
    Jun Handa
    Department of Sports Dentistry, Tokyo Dental College, 1 2 2 Masago, Mihama ku, Chiba 261 8502, Japan
    J Prosthodont Res 55:214-20. 2011

Collaborators

Detail Information

Publications23

  1. ncbi request reprint [Questionnaire survey of dentists who made their own mouthguards]
    Kazunori Nakajima
    Department of Sports Dentistry, Tokyo Dental College
    Nihon Hotetsu Shika Gakkai Zasshi 49:708-15. 2005
    ..This research aimed to obtain data for the selection, improvement, and spread of mouthguards in the future. A questionnaire survey of dentists who had made four kinds of mouthguard was conducted in a mouthguard seminar...
  2. doi request reprint A vacuum technique to increase anterior thickness of athletic mouthguards to achieve a full-balanced occlusion
    Kazunori Nakajima
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 24:50-2. 2008
    ..An improved vacuum fabrication method is necessary to obtain full balanced occlusion in these cases as opposed to conventional vacuum type single-layer mouthguard technique...
  3. ncbi request reprint Does hard insertion and space improve shock absorption ability of mouthguard?
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 22:77-82. 2006
    ..Furthermore, hard + space shows quite high shock absorption ability in the tooth distortion. Namely, hard + space has decreased the distortion of teeth up to several percentages in both impact objects...
  4. doi request reprint Are all mouthguards the same and safe to use? Part 2. The influence of anterior occlusion against a direct impact on maxillary incisors
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 24:360-5. 2008
    ..The results of this research should further contribute to the establishment of guidelines for safer mouthguards...
  5. ncbi request reprint The influence of the sensor type on the measured impact absorption of mouthguard material
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Dent Traumatol 20:29-35. 2004
    ..43% with the load cell). It is clear that the sensor plays an important role in the measurement values reported for absorbency of mouthguard materials and a standard sensor should be used for all experiments...
  6. doi request reprint Easy fabrication of a new type of mouthguard incorporating a hard insert and space and offering improved shock absorption ability
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 27:489-95. 2011
    ..The purpose of this article is to describe the method by which the Hard & Space mouthguard may easily be fabricated. We believe that this new type of mouthguard has the potential to reduce sports-related dental injuries...
  7. ncbi request reprint Are all mouthguards the same and safe to use? The influence of occlusal supporting mouthguards in decreasing bone distortion and fractures
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Dent Traumatol 20:150-6. 2004
    ..From this study, it would seem that wearing a mouthguard, which is insufficient in the occlusion, has the potential of causing a bone fracture of the mandible. Consequently, mouthguards should have proper occlusion...
  8. ncbi request reprint Can mouthguards prevent mandibular bone fractures and concussions? A laboratory study with an artificial skull model
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 21:134-40. 2005
    ..However, further well-designed and exhaustive studies are vital to show that mouth guards reduce the incidence of concussions and mandibular bone fractures...
  9. ncbi request reprint In search of necessary mouthguard thickness. Part 1: From the viewpoint of shock absorption ability
    Masahiko Maeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Nihon Hotetsu Shika Gakkai Zasshi 52:211-9. 2008
    ..However, this figure is based mostly on experience and is yet to be standardized. The purpose of this study is to determine the minimum thickness required to obtain sufficient energy absorption...
  10. doi request reprint Influence of pre-laminated material on shock absorption ability in specially designed mouthguard with hard insert and space
    Jun Handa
    Department of Sports Dentistry, Tokyo Dental College, 1 2 2 Masago, Mihama ku, Chiba 261 8502, Japan
    J Prosthodont Res 55:214-20. 2011
    ..The purpose of this study was to investigate the effect of this new design on shock absorption...
  11. ncbi request reprint Adhesive strength and its improvement referring to the laminated-type mouthguard
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 22:205-14. 2006
    ..Water sorption did not affect the adhesive strength. Therefore, if laminated-type mouthguards were manufactured properly, it can be used for a longer time and in a good condition...
  12. doi request reprint Functional near-infrared spectroscopy study on primary motor and somatosensory cortex response to biting and finger clenching
    Mami Shibusawa
    Department of Sports Dentistry, Tokyo Dental College, Nihon University School of Medicine, Tokyo, Japan
    Adv Exp Med Biol 662:485-90. 2010
    ..The results suggest that intensity of bite and fclench influences activation levels in MI and SI. Further, an activation was more obvious with bite than fclench...
  13. doi request reprint Activity in the premotor area related to bite force control--a functional near-infrared spectroscopy study
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College Nihon University School of Medicine, Tokyo, Japan
    Adv Exp Med Biol 662:479-84. 2010
    ..These results suggest there is a possibility that the premotor area is involved in bite force control...
  14. ncbi request reprint Expression of myosin heavy-chain mRNA in cultured myoblasts induced by centrifugal force
    Katsuhide Kurokawa
    Department of Sports Dentistry, Tokyo Dental College, 1 2 2 Masago, Mihama ku, Chiba, Japan
    Bull Tokyo Dent Coll 49:179-84. 2008
    ..The results of this study clarified the effect of different centrifugal stimulation speeds on muscle fiber characteristics, and suggest that centrifugal stimulation of myoblasts enhances cell proliferation...
  15. doi request reprint Paired maxillary and smaller mandibular mouthguard for rugby player with malalignment
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Dent Traumatol 30:76-80. 2014
    ..We believe that this new type of paired maxillary and mandibular mouthguards has the potential to reduce sports-related dental injuries. ..
  16. doi request reprint Effects of experimentally deviated mandibular position on stress response
    Ai Amemiya
    Department of Sports Dentistry, Tokyo Dental College, Chiba, Japan
    Adv Exp Med Biol 765:1-7. 2013
    ..035). These findings suggest that EDMP-induced reduction in the level of PFC activity was a response to discomfort, indicating that EDMP affects systemic function such as that of the ANS as an unpleasant stressor...
  17. doi request reprint Effect of experimental horizontal mandibular deviation on dynamic balance
    Shimpachi Wakano
    Department of Sports Dentistry, Tokyo Dental College, 1 2 2 Masago, Mihama ku, Chiba 261 0011, Japan
    J Prosthodont Res 55:228-33. 2011
    ..This aim of this study was to determine the effect of horizontal mandibular deviation on stability of upright posture on an unstable platform in order to clarify the relationship between the stomatognathic system and the dynamic balance...
  18. doi request reprint Functional near-infrared spectroscopy study on primary motor and sensory cortex response to clenching
    Mami Shibusawa
    Department of Sports Dentistry, Tokyo Dental College, Mihama ku, Chiba shi, Chiba 261 8502, Japan
    Neurosci Lett 449:98-102. 2009
    ..The results suggest that clenching elicits activation of both the primary motor and sensory cortices, and that intensity of clenching influences activation levels in the brain...
  19. ncbi request reprint The influence of impact object characteristics on impact force and force absorption by mouthguard material
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College, Tokyo, Japan
    Dent Traumatol 20:12-20. 2004
    ..0% absorbency. These results show that it is important to test the effectiveness of mouthguards on specific types of sports equipment. In future, we may select different materials and mouthguard designs suitable for specific sports...
  20. ncbi request reprint Clinical training in department of general dentistry at Tokyo Dental College Chiba Hospital
    Toshiko Sugiyama
    Chiba Hospital General Dentistry, Tokyo Dental College, 1 2 2 Masago, Mihama ku, Chiba, Japan
    Bull Tokyo Dent Coll 49:29-32. 2008
    ..In addition, a course was also established at the Department of General Dentistry, Tokyo Dental College Chiba Hospital in April 2002. We report the training curriculum of this course...
  21. ncbi request reprint [Mouthguard effect of tooth distortion during clenching]
    Tomotaka Takeda
    Department of Sports Dentistry, Tokyo Dental College
    Nihon Hotetsu Shika Gakkai Zasshi 49:608-16. 2005
    ..In this study, the effect of a mouthguard (Drufosoft 3mm, EVA) on tooth distortion caused by clenching was measured and examined at three different clenching strengths...
  22. ncbi request reprint Epidemiological and clinical aspects of malaria in Japan
    Mikio Kimura
    Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Toyama 1 23 1, Shinjuku ku, Tokyo 162 8640, Japan
    J Travel Med 10:122-7. 2003
  23. ncbi request reprint Anaphylactic transfusion reactions in haptoglobin-deficient patients with IgE and IgG haptoglobin antibodies
    Eiko Shimada
    Transfusion Information Department, The Japanese Red Cross Central Blood Center, Tokyo, Japan
    Transfusion 42:766-73. 2002
    ..Haptoglobin deficiency therefore might be a risk factor for NHTRs...