The emerging field of sports dentistry has gained wider recognition over the past two decades. The Japanese Academy of Sports Dentistry has launched its official English-language journal, The International Journal of Sports Dentistry, to further open the discourse in this field on a worldwide stage. This journal provides an overview of the scientific developments in sports-related dentistry around the world, with an emphasis on orofacial injury prevention (eg, mouthguards, faceguards, gum-chewing research) and management of dentofacial trauma and craniofacial pain.

Contents
Vol. 5, No. 1

Preface * Misao Kawara (p. 5)

Original Articles

Influence of Mouthguard on Single-tooth Root Distortion * Kazunori Nakajima, Tomotaka Takeda, Katsuhide Kurokawa, Ken Hasegawa, Keishiro Narimatsu, Takaki Kajima, Takeshi Satoh, Atsushi Shimada, Yoshihiro Kondo, Keiichi Ishigami (p. 7)

Influence of the Custom-made Mouthguard Wearing for Cerebral Palsy Soccer Athlete on Masticatory Muscle Activity during Center of Gravity Fluctuation * Hiroshi Suzuki, Hiroshi Aono, Aito Watanabe, Toshikazu Kuroki, Osamu Komiyama, Takashi Asano, Takashi Iida, Ryoko Nagata, Misao Kawara (p. 13)

Influence of Reheating after the Vacuum Forming Process on Deformation of the Mouthguard * Fumi Mizuhashi, Kaoru Koide, Mutsumi Takahashi (p. 21)

Influence of Mouthguard on Masticatory Muscles Activities and Physical Performance during Exercise * Misao Kawara, Takashi Asano, Hiroshi Suzuki, Aito Watanabe, Ryouko Obara, Takashi Iida, Osamu Komiyama, Toshikazu Kuroki (p. 28)

Effect of Clenching and Pinching Force on Activation of Cortex Involved in Motor Brain Activity: an fMRI Study * Osamu Mishima, Ai Amemiya, Katsuhide Kurokawa, Kazunori Nakajima, Tomotaka Takeda, Keiichi Ishigami (p. 35)