A miniaturized mouthpiece for repositioning the users mandible, thereby creating an edge to edge relationship of the users anterior teeth, without covering or extending to the users posterior teeth. This miniaturized mouthpiece may be formed from a substantially trapezoidal mouthpiece blank having major and minor sides that are substantially parallel to one another. These major and minor sides may be connected by two equal length non-parallel sides. This blank will typically have a gently curved and raised contact area that follows the curvature of the users anterior dental arches. The mouthpiece blank will often be made of a thermoplastic material, so that upon application of heat, the blank can be deformed around the users maxillary central incisors and often the users maxillary lateral incisors as well, thus creating a mouthpiece that does not cover the users molars or premolars, yet which creates an interocclusal gap when worn.
