An anti-obstructive airway dental orthotic (10) having multiple fixed jaw displacement adjustments is provided. A maxillary retainer (100) is connected to a mandibular retainer (200) by a strut having a length variable between a fixed minimum and a fixed maximum length. The maxillary retainer (100) has two pivot points (120, 125) such that the strut (300) may be moved from the second pivot point (125) to the first pivot point (120) to effect a progressive adjustment of mandibular advance. Additionally, the maxillary retainer (100) may be provided with a spacing area (140) that creates a minimum vertical separation between a cusp of the user's maxillary premolar and a cusp of the user's opposing mandibular premolar. Other fenestrations and cut-outs in the device (10) may also be provided.