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Retention Phase of Orthodontics

Retention Phase of Orthodontics. It is the functional adaptation period, following active orthodontic phase. Biological basis of retention. Within a short period of time , most of the periodontal fibers realign themselves, the supra-alveolar and transeptal fibers change very slowly.

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Retention Phase of Orthodontics

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  1. Retention Phase of Orthodontics

  2. It is the functional adaptation period, following active orthodontic phase.

  3. Biological basis of retention • Within a short period of time , most of the periodontal fibers realign themselves, the supra-alveolar and transeptal fibers change very slowly. • Woven bone matures into bundle bone.

  4. Factors affecting retention planning • 1- Original mal-occlusion. • 2- lengths of cusps, relation of • inclined plane. • 3-status of perio-oral muscles. • 4- Etiology of malocclusion. • 5- Skeletal age of the patient.

  5. Factors affecting retention planning • 6- Cooperation of the patient. • 7-Distance of the teeth movement. • 8-Length of active period. • 9- Status of cranio-facial growth. • 10-Post-treatment occlusion. • 11- Status of third molars

  6. Types of retainers • 1- Removable retainer. • 2- Fixed retainer. • 3- Positioner.

  7. Duration of Retention • 1- No Retention • 2- Permanent Retention. • 3- Temporary Retention.

  8. Orthodontic Relapse • Relapse is the loss of correction achieved through orthodontic treatment.

  9. Common relapse problems • 1-Collapse of mandibular expansion. • 2- Relapse of corrected open –bite or deep bite. • 3- Relapse of posterior cross- bite. • 4- Relapse of corrected rotation, Re -apperance spacing or crowding

  10. Etiology of relapse • 1-Improper orthodontic diagnosis. • 2- Inadequate

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