Abstract: An apparatus for use in treatment of sleep apnea includes: a first body for use on an upper jaw; and a second body which is matingly engaged by the first body wherein the second body is used on a lower jaw. The first body has a first member and the second body has a second member. The member slidably engages the second member and the second body has a wall which slides along a wall of the first body which moves the second body. The second body is secured to at least one dental implant on the lower jaw. A method of treating sleep apnea, includes: providing an apparatus having a first body for use on an upper jaw; and a second body which is matingly engaged by the first body wherein the second body is used on a lower jaw. The first body has a first member and the second body has a second member. The first member slidably engages the first member with the second member. The second body is mounted onto the lower jaw by securing the second body onto at least one dental implant in the lower jaw.