An adjustable segmental distalization appliance for orthodontic treatments features elongated first and second components that cooperatively define a central body of the appliance spanning longitudinally between an anterior end of the first component and a distal end of the second component. First and second terminal heads are respectively carried at the anterior and distal ends and adapted for attachment to first and second teeth of a dental arch. The first and second components are arranged for selective longitudinal displacement relative to one another to adjust an overall length of the central body to adapt to a patient-specific mesial-distal distance between the first and second teeth of the dental arch. In one embodiment, one component is a tubular female component carrying a ratchet pawl, and the other component is an insertable male component with cooperating ratchet teeth for incremental extension of the central body.
