Abstract: A mouthguard apparatus is disclosed herein. In various aspects, the mouthguard apparatus includes an electronics package adapted to attach removably to a dental appliance. The dental appliance may be configured to be secured within the mouth of a user. At least portions of the electronics package adapted to extend external to a mouth of the user when the electronics package is attached to the dental appliance and the dental appliance is secured within the mouth of the user, in various aspects. Related methods are disclosed herein. This Abstract is presented to meet requirements of 37 C.F.R. §1.72(b) only. This Abstract is not intended to identify key elements of the apparatus and methods disclosed herein or to delineate the scope thereof.