| 主权项 |
1. A mouthguard comprising:
an arch-shaped upper channel adapted to receive a user's maxillary teeth, said upper channel comprising upward facing walls disposed along the buccal and lingual surfaces of the user's maxillary teeth; an arch-shaped lower channel adapted to receive a user's mandibular teeth, said lower channel comprising downward facing walls disposed along the buccal and lingual surfaces of the user's mandibular teeth; and a connecting portion disposed along the interface between said upper channel and said lower channel, said connecting portion comprising a plurality of hollow, tubular conduits running substantially anterior-to-posterior therethrough, said conduits having a median cross-sectional area between 0.1 and 4 cm2. |
