Within the limitations of this study, from the viewpoint of energy absorption ability, the minimum thickness required for a mouthguard is 4 mm, which is generally too large from the viewpoint of player comfort. This finding indicates the necessity of improving the impact absorption ability of mouthguards by considering new designs and developing new materials.

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Recently, sports dentistry has attracted attention as a field of sportsmedicine. Since the stomatognathic system and the systemic condition closely affect with each other, we have studied both of them objectively, physiologically and scientifically. Archery is a sport requiring static concentration of thought, and it seems to be extremely important for this sport to control a basic posture at the time of aiming at a target. This study was carried out for the purpose of obtaining a fundamental data on how a bite raising for vertical position by a resin splint, which maintained stable occlusion, influenced gravity fluctuations in posture at the time of aiming at a target.

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