A dental mouthpiece is provided that may be attached to a high-suction dentaladapter for the purpose of assisting the dental staff during dental proceduresthrough chair-side, hands-free suction, and isolation. Such a mouthpiece maycomprise a main body portion, a cheek retractor portion, and a suctionconnectorportion. In some embodiments, the main body portion, cheek retractor portion,andsuction connector portion (and sub-portions thereof) may be molded in onepiece,preferably by injection molding. In an exemplary embodiment, the mouthpiecemaybe made of a material that is flexible, translucent, conducive to injectionmolding,high heat-resistant, and autoclavable. Such a material may include silicone.Becausethe mouthpiece may be made of a high heat-resistant and autoclavable material,sucha mouthpiece may be reusable.