The present invention provides an adjustable mandibular repositioningappliance including first and second connecting members and alink arm which is pivotable about an axis wherein protrusive positioning ofthe mandible is provided by relative positioning of the link arm along aidaxis, to kits and couplings for making a readily adjustable mandibularappliance,to a system for providing a readily adjustable mandibular repositioningappliance and methods of use.