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Retention

  • MAXILLARY HAWLEY RETAINER
  • Palate = transverse+antero-posterior
  • Labial bow = overjet + alignment    standard or circumferential
  • Anterior bite plane = overbite
  • Finger springs = rotations, spaces,   lingual tipping
  • Clasps for retention of appliance  -ball, Adams, interproximal, “C” clasp
  • Headgear for Class II to molar bands

 

  • CROWDING IN ORTHODONTICALLY TREATED PATIENTS OVER TIME
  • ARCH LENGTH AND ARCH DEPTH DECREASE AFTER ERUPTION OF SECOND MOLARS……. LEADING TO CROWDING
  • CROWDING IN UNTREATED SUBJECTS BETWEEN 12-18-30 YEARS
  • NORMAL PHYSIOLOGIC PHENOMENON
  • (10 REFERENCES)

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