A mouth guard designed to minimize discomfort and speech interference associated with conventional mouthpieces is disclosed. The mouth guard has a substantially uniform thickness on the facial/buccal and biting surfaces of the anterior and posterior teeth, and along the lingual surface of the posterior teeth. The thickness of the mouth guard along the lingual surface of the anterior teeth is greater near the biting surface than near the gum line. This minimizes interference with the wearer's tongue, making it relatively easy to drink, speak, and breathe, while protecting the anterior and posterior teeth from impact from the front or underneath. The mouth guard can be a boil-and-bite or custom-made mouth guard, and can also include an impact shield, one or more power wedges or shock absorbers, a flavoring component, and/or an antibacterial component.

An oral sanitation system may include a case including: a support portion defining a lower end of the case; and a container portion extending from the support portion. The container portion may define a wall extending from the support portion to a top end of the container portion. The oral sanitation system may further include a closure including a lid formed with a peripherally-extending wall; a lower cavity defined by the wall of the container portion; an upper cavity defined by the peripherally-extending wall of the closure; and a light-guiding floor that is substantially transparent to UVC light, the light-guiding floor forming a bottom of the container portion that is surrounded by the wall.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

An oral appliance for treating sleep apnea in a user includes a mouthpiece configured for being positioned in an oral cavity of the user, and at least one pulse oximeter attached to the mouthpiece. According to an aspect, the pulse oximeter is configured to monitor actual oxygen saturation levels of hemoglobin of the user when the oral appliance is positioned in the oral cavity of the user. The oral appliance may include an additional sensor attached to the mouthpiece that includes at least one of an airflow sensor, a pressure sensor, a noise detector, and an actigraphy sensor.

The present disclosure generally provides oral inserts useful for determining forces experienced by a user, such as a human user, to the head, for example, by measuring one or more of acceleration, velocity, displacement, or rotation. In some aspects, the disclosure provides oral inserts that, when worn properly by a human user, calculate the forces experienced by the user's head with high accuracy. In some aspects, the disclosure provides systems for detecting and calculating forces experienced by the user's head and to determine whether such forces are above a certain threshold indicative of increased concussion risk. In some aspects, the disclosure provides methods for calculating forces experienced by the user's head and determining whether such forces are above a certain threshold indicative of concussion.

A personal entertainment respiratory apparatus provides air to a user to provide a fully immersive entertainment experience. The personal entertainment system may comprise a flow generator for providing the flow of air. A personal spatial respiratory interface may be coupled to the flow generator. The personal spatial respiratory interface may comprise an outlet for the flow generator. The personal spatial respiratory interface may further be configured to direct the flow of air within an ambient breathing proximity of a user. The personal entertainment respiratory apparatus may further comprise a controller and a sensory particle dispenser. The controller and sensory particle dispenser may be configured to selectively activate release of a sensory particle from the dispenser into the directed flow of air in response to an entertainment triggering signal.

A system for reducing traumatic brain injuries in players on a sports field includes a number of transmitters worn by at least some of the players; a plurality of sensors configured for placement on or near the sports field for receiving signals transmitted from the transmitters as the players move about on the field; a head-stabilizing component worn by at least one of the players that inhibits relative motion of the player's head when activated; and a processing element coupled with the sensors and in communication with the head-stabilizing component. The processing element determines locations of the players based on the signals transmitted from the transmitters worn by the players, determines if the players are likely to impact one another or an object on the field based on the locations of the players, and transmits an activating signal to the head-stabilizing component to inhibit relative motion of the player's head if the processing element determines the player is likely to impact another player or an object on the sports field.

A personal entertainment respiratory apparatus provides air to a user to provide a fully immersive entertainment experience. The personal entertainment system may comprise a flow generator for providing the flow of air. A personal spatial respiratory interface may be coupled to the flow generator. The personal spatial respiratory interface may comprise an outlet for the flow generator. The personal spatial respiratory interface may further be configured to direct the flow of air within an ambient breathing proximity of a user. The personal entertainment respiratory apparatus may further comprise a controller and a sensory particle dispenser. The controller and sensory particle dispenser may be configured to selectively activate release of a sensory particle from the dispenser into the directed flow of air in response to an entertainment triggering signal.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

The present disclosure relates to systems and methods for manufacturing a mouthpiece with desired dimensions or thicknesses that may enhance the performance of an individual when participating in a contact sport. Mouthpieces and methods consistent with the present disclosure may include incremental steps of three dimensional printing that use different materials. Dimensions and materials used when manufacturing mouthpieces of the present disclosure may be optimized according to user preferences or settings.