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. 4, No. 1

Preface * Misao Kawara (p. 5)

Original Article

Influence of Reheating after Vacuum Forming Process on Mouthguard Properties –Dimensional Changes after Immersion in Water and after Drying– * Fumi Mizuhashi, Kaoru Koide, Mutsumi Takahashi, Ryo Mizuhashi (p. 7)

Clinical Reports

Double-Layered Mouthguard for Patients with Upper Edentulous Jaws * Kozaburo Hashii, Tetsuya Takamata, Yoshiyuki Okada, Masaaki Anzai, Masahito Shoumura, Takami Nakamura (p. 15)

Implant Therapy after Dental Trauma: A Case Report * Takuto Yamanaka, Jared Willis, Stephen St James, Toshiyuki Takahashi, Goshi Kondo, Toshiaki Ueno (p. 21)

A Non-metal Clasp Denture for Tooth Replacement in a Karate Athlete * Hirota Saito, Hiroshi Suzuki, Aito Watanabe, Megumi Takao, Toshikazu Kuroki, Osamu Komiyama, Takashi Asano, Takashi Iida, Misao Kawara (p. 28)

Clinical Effectiveness of a Custom Faceguard for a Futsal Player Injured with a Nasal Bone Fracture for Early and Safe Return: A Case Report * Hiroshi Churei, Keisuke Abe, Sachiko Fujino, Shahrin Sharika, Ruman Uddin Chowdhury, Sei Saito, Eijiro Isoyama, Minoru Shiraishi, Tomohiko Tateishi, Naoko Yui, Yusuke Morimoto, Fumio Ushijima, Toshiaki Ueno (p. 34)