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A treatment method for / dental courses /certified fixed orthodontic courses by Indian dental academy
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A treatment method for / dental courses /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.


Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078

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A treatment method for / dental courses /certified fixed orthodontic courses by Indian dental academy A treatment method for / dental courses /certified fixed orthodontic courses by Indian dental academy Presentation Transcript

  • INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  • Class II Correction • Headgears/ Class II elastics –Patient Compliance • Implants becoming popular • Xtn of First molars – Williams (1976) • Williams R. Single arch extraction—upper first molars or what to do when nonextraction treatment fails. Am J Orthod 1979;76:376–393. • Williams R, Hosila FJ. The effect of different extraction sites upon incisor retraction. Am J Orthod 1976;69:388–410. www.indiandentalacademy.com
  • Technique • 3 stages – Class II Correction – Space Closure & Torque – Detailing & Finishing www.indiandentalacademy.com View slide
  • Phase 1: Class II Correction www.indiandentalacademy.com View slide
  • Maxilla • The second molars are banded -7-mm buccal tubes and palatal sheaths – palatal bar – increase anchorage – correct eventual rotations and transversal malpositions • Extraction of First Molar – healing period of three weeks • Low-friction brackets - Begg light wire brackets • Maxillary premolars not bonded www.indiandentalacademy.com
  • Beginning of Class II correction www.indiandentalacademy.com
  • The Archwire • 0.016-in premium plus pull straightened Australian wire (Wilcock, Whittlesea, Australia) • If the maxillary anterior teeth cannot easily be attached to the archwire, this is completed after space is created by distal movement of the maxillary canines • Anchor bends – 5mm mesial of the second molar tubes prevents mesial tipping of these teeth • degree of bends depends on the desired amount of bite opening www.indiandentalacademy.com
  • • canines are fixed with stainless steel high hat lock pins • occlusal part - partially bent mesially - hook for the horizontal elastics (5/16 in, 2.6 oz), • attached - buccal hooks on the maxillary second molar bands • patient is instructed to replace the elastics only once per week • elastics should run inside the anchor bends in the main arch – prevent irritation to gingiva www.indiandentalacademy.com
  • If second molars move too quickly • horizontal elastics - replaced by Class II elastics (5/16 in, 2.6o) www.indiandentalacademy.com
  • Completion of Class II correction; a Class I canine and premolar inter-digitation is realized www.indiandentalacademy.com
  • Phase II : Space Closure & Torque www.indiandentalacademy.com
  • • modified with offset bends, anchor bends, and vertical offsets between second molars and second premolars • Depending on the required bite opening, v-bends between both premolars and premolars and canines are added • alignment of the maxillary premolars takes approximately one month, after which the 0.016-in archwire is replaced by a 0.018-in premium plus archwire www.indiandentalacademy.com
  • Individual adjustments • to correct the relation of maxillary central and lateral incisors in conjunction with the smile line - form of the maxillary arch is adapted to the form of the original arch • An individual two-spur torque auxilliary of 0.014-in regular wire (Wilcock, Whittlesea, Australia) ending distally of the maxillary canine brackets is applied • Aside from the torque effect, this spring has the tendency to protrude the maxillary anterior teeth. www.indiandentalacademy.com
  • • adverse effect is eliminated by horizontal traction in the lateral regions • If extensive torque is required and rest spaces are small, the palatal bar between the maxillary second molars is maintained. In the opposite situation, the bar is temporarily removed. www.indiandentalacademy.com
  • Beginning of space closure and torque; the maxillary premolars are bonded and the maxillary 0.016-in archwire is adjusted. www.indiandentalacademy.com
  • • If extensive torque is required and rest spaces are small, the palatal bar between the maxillary second molars is maintained • In the opposite situation, the bar is temporarily removed www.indiandentalacademy.com
  • A 0.018-in maxillary archwire in combination with a 0.014-in torquing auxilliary, uprighting and horizontal tractions; the palatal bar can be temporarily removed www.indiandentalacademy.com
  • • The patients are seen at intervals of six to eight weeks • The closing of the lateral spaces and torque action must be balanced • Orthodontists have to observe the progress and decide about individual adaptations in the use of horizontal tractions, uprighting springs, and eventual wear of Class II elastics. www.indiandentalacademy.com
  • Mandible • In case of the eventual wear of Class II elastics, the mandibular archwire shape is expanded to compensate for lingual tipping of the mandibular molars • When indicated, individual uprighting springs are placed in the vertical slots www.indiandentalacademy.com
  • Phase III : Detailing & Finishing www.indiandentalacademy.com
  • • In the final phase of treatment, adjustments are made in the archwires for detailed finishing and the palatal bar is reinserted when indicated • Each tooth can be uprighted independently by placement of springs, taking into account the adverse effects of the uprighting springs that all point into the same direction and causing a mesial directed tendency www.indiandentalacademy.com
  • Space closure, torque, and uprighting are complete www.indiandentalacademy.com
  • Retention • means of fixed retainers • To prevent vereruption of the mandibular second molars, local retention wires are bonded buccally between the mandibular first and second molars • These sectionals are removed when the maxillary third molars are in occlusal contact with the mandibular second molars www.indiandentalacademy.com
  • The bonded wire between the mandibular first and second molars is removed after settling in of the maxillary third molar. www.indiandentalacademy.com
  • Beginning of treatment www.indiandentalacademy.com
  • Beginning of Class II correction after extraction of the maxillary first molars www.indiandentalacademy.com
  • Beginning of space closure and torque; the maxillary premolars are bonded, and the maxillary 0.016-in archwire is adjusted www.indiandentalacademy.com
  • A 0.018-in maxillary archwire with a 0.014-in torquing auxilliary www.indiandentalacademy.com
  • Completion of treatment www.indiandentalacademy.com
  • Five years post treatment www.indiandentalacademy.com
  • Discussion www.indiandentalacademy.com
  • Conclusion Extraction of maxillary first molars, followed by fixed appliance treatment with low-friction brackets with thin round wires and a palatal bar, is an effective and efficient treatment modality for Class II Division 1 malocclusions, especially for less compliant patients. www.indiandentalacademy.com
  • For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com