Abstract
This paper focuses on adolescent orthodontic treatment. It should be stressed that a retainer appliance, of whatever sort, is only useful once the planned result, and especially the occlusal objective, has been achieved. A review of Tweed technique objectives is also presented.Prognosis depends on quality of finishing, acquisition of normal function and neuro-muscular adaptation, to minimize risk of relapse. Nonetheless, relapse seems inevitable in the long term as regards individual crowding, except if retention is maintained for a very long time. Many clinical situations, in different pathologies and with 5 to 22 years’ follow-up after active treatment will be described illustrate progress in retention strategy, as it is difficult to assess real stability after only 1 year's retention, as can be seen from the orthodontic literature.
Highlights
This paper focuses on adolescent orthodontic treatment
Prognosis depends on quality of finishing, acquisition of normal function and neuro-muscular adaptation, to minimize risk of relapse
Relapse seems inevitable in the long term as regards individual crowding, except if retention is maintained for a very long time
Summary
This paper focuses on adolescent orthodontic treatment. It should be stressed that a retainer appliance, of whatever sort, is only useful once the planned result, and especially the occlusal objective, has been achieved. According to Quaglio[45], stability over time is better in superior than inferior incisors, as confirmed by another study of 52 female patients, at a mean 24 years after end of treatment[15].
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