Abstract: A customizable scuba-diving mouthpiece for gripping with a diver's teeth, the mouthpiece including including a front member forming a horizontal passageway and a U-shaped back member with a pair of leg portions each including a thermoformable custom-moldable bite portion which in some embodiments is substantially X-shaped in cross-section along the bite-line. Upper-inner and lower-inner wall-portions of each leg portion may terminate rearwardly beside the diver's premolars and forward of the diver's first molar, thereby reducing gagging effect. The passageway may be defined by tapered inner sidewall portions defining the greatest between-sidewall-portions cross-dimension at the leg portions. A bite-limiter may be inserted into the passageway and includes a bite-limiting portion positioned for engagement with the diver's incisors to control the degree of bite and depth of tooth impressions, the bite-limiting portion having a thickness no greater than one third of a passageway vertical dimension.

Abstract: The invention involves a plug for a dive mouthpiece. The plug comprises a plug portion and a handle portion. The plug portion has a plug-portion distal end and a plug-portion proximal end. The plug-portion includes an exterior surface, which is complementary in shape to a distal portion of the passageway shape of the mouthpiece. The handle portion has a handle-portion proximal end integral with the plug-portion distal end. The handle portion also has a handle-portion distal end and of a handle-portion exterior surface configured to be complementary in shape to the proximal portion of the passageway shape of the mouthpiece.

Abstract: The invention involves a plug for a dive mouthpiece. The plug comprises a plug portion and a handle portion. The plug portion has a plug-portion distal end and a plug-portion proximal end. The plug-portion proximal end has a plug-portion-proximal-end exterior surface, which is complementary in shape to a distal portion of the passageway shape of the mouthpiece. The handle portion has a handle-portion proximal end integral with the plug-portion distal end. The handle portion also has a handle-portion distal end of a handle-portion exterior shape which is configured to be complementary in shape to the proximal portion of the passageway shape of the mouthpiece.

Abstract: The invention involves an osteogenic mandibular distraction device. The device is particularly suited for bucchal installation. The device comprises a thoracic member having a fore end and an aft end; a tail member slidably engaged to the thoracic member at the aft end thereof, thereby defining a longitudinal axis between the thoracic member and the tail member, and having a tail member fastening feature for attachment with respect to a first boney structure; an axial extender rotatably attached with respect to the thoracic member, extending therefrom in an aft direction, and engaged with respect to the tail member, whereby a distance between the thoracic member and the tail member may be variably established; a head member; and a rotator attached with respect to the fore end of the thoracic member allowing specific and fixable rotational positioning transverse to the longitudinal axis of the head member with respect to the thoracic member.