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Serial extraction

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Serial extraction

  1. 1. Serial extraction An interceptive orthodontic procedure. Other terminologies: Guidance of eruption Guidance of occlusion www.indiandentalacademy.com
  2. 2. Serial extraction Definition: It is a timed, planned extraction regimen involving deciduous teeth, followed by extraction of the permanent teeth in order to alleviate crowding as well as the duration of fixed mechanotherapy. www.indiandentalacademy.com
  3. 3. Serial extraction History: Robert Bunon (1743)was the first to describe serial extraction. Kjellgren coined the term ‘ serial extraction’ Nance is considered as the father of serial extraction in the USA. Other pioneers have been : Hotz, Tweed, Dewel and Jack Dale. www.indiandentalacademy.com
  4. 4. Serial extraction Definition: It is a planned sequential extraction regimen involving deciduous teeth, followed by extraction of the permanent teeth in order to alleviate future crowding as well as the duration of fixed mechanotherapy. www.indiandentalacademy.com
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  6. 6. Serial extraction Indications: •Class I malocclusion. •Arch length discrepancy of 10 mm •Normal overjet and overbite www.indiandentalacademy.com
  7. 7. Serial extraction Diagnosis for an ideal case •Cephalometric analysis •Arch discrepancy model analysis www.indiandentalacademy.com
  8. 8. Serial extraction Methods: •Nance method •Tweed method •Dewel method www.indiandentalacademy.com
  9. 9. Serial extraction Methods: •Dewel method: Extraction of deciduous canines , followed by deciduous first molars and finally first premolars www.indiandentalacademy.com
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  11. 11. Serial extraction Methods: •Nance method : Extraction of deciduous first molars, followed by first premolars and then deciduous canines •Tweed method : similar to the above except that extraction sequence may involve the deciduous laterals also www.indiandentalacademy.com
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  13. 13. Serial extraction  Contra-indications of Serial extraction: 1) Skeletal Class II and Class III conditions 2) Deep overbite 3) Class I cases with minimal arch length discrepancy www.indiandentalacademy.com
  14. 14. Serial extraction  Advantages of Serial extraction: 1) Minimal fixed appliance treatment 2) Relatively less compliance from the patient www.indiandentalacademy.com
  15. 15. Serial extraction  Disadvantages of Serial extraction: 1) Thorough diagnosis is needed 2) Bite deepening usually occurs 3) It becomes a two-stage treatment www.indiandentalacademy.com
  16. 16. Serial extraction Serial extraction in Class II malocclusions: Usual procedure may be carried out , but only in the upper arch. www.indiandentalacademy.com

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