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Changing trends in preadjusted edgewise system /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.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
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Changing trends in preadjusted edgewise system /certified fixed orthodontic courses by Indian dental academy

  1. 1. www.indiandentalacademy.com
  2. 2. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  3. 3. “anchorage burning appliance” - - A torque of 7° on central incisors was soon found to be insufficient, since the play between archwire and bracket slot, which wasn’t taken into account, creates important loss of information during retraction stages and hence the amount torque necessary to compensate for the unwanted lingual tipping was clearly greater than 7° www.indiandentalacademy.com
  4. 4. 1974, Ronold Roth: www.indiandentalacademy.com
  5. 5. www.indiandentalacademy.com
  6. 6. www.indiandentalacademy.com
  7. 7. www.indiandentalacademy.com
  8. 8. Wick Alexander : www.indiandentalacademy.com
  9. 9. www.indiandentalacademy.com
  10. 10. “Fully Programmed Translation brackets” by Andrew’s - These are three sets of information mixed according to the treatment needs. -These come in 3 sets bearing values of angulation, torque and anti rotation www.indiandentalacademy.com
  11. 11. “Minimum translation brackets” www.indiandentalacademy.com
  12. 12. “Medium Translation Brackets” www.indiandentalacademy.com
  13. 13. “Maximum Translation Brackets” www.indiandentalacademy.com
  14. 14. www.indiandentalacademy.com
  15. 15. Summarizing so far… -All the above prescriptions globally reflect the treatment philosophy of their different authors. -It will be necessary for the practitioner to complete the programme by adding information to the wire. www.indiandentalacademy.com
  16. 16. Incisor torque Andrews Roth Alex Root Benett Hilgers www.indiandentalacademy.com
  17. 17. Canine Position Andrews Andrews Roth Alex Root Max www.indiandentalacademy.com Bennett Hilgers
  18. 18. Evolution toward facial type This evolution is also taking place in cephalometrics where the notion of mean now tends to be replaced by growth considerations. This corresponds to the need for individualization of information. Since variability in the morphology of the facial skeleton necessarily implies variability in the dento-alveolar compensations. www.indiandentalacademy.com
  19. 19. “Dolichofacial” www.indiandentalacademy.com
  20. 20. “Brachyfacial” www.indiandentalacademy.com
  21. 21. www.indiandentalacademy.com
  22. 22. www.indiandentalacademy.com
  23. 23. SNA - 840 SNB – 770 ANB- 70 Mnd- FH- 250 0 U1 to SN -103 0 U1 to NA- 260, 3mm L1 to MP- 1020 L1 to NB- 300, 6mm www.indiandentalacademy.com
  24. 24. www.indiandentalacademy.com
  25. 25. www.indiandentalacademy.com
  26. 26. 0 SNA - 79 0 SNB – 820 ANB- 30 Mnd- FH- 230 U1 to SN -1080 U1 to NA- 250, 3mm L1 to MP- 900 L1 to NB- 230, 3mm www.indiandentalacademy.com
  27. 27. www.indiandentalacademy.com
  28. 28. SNA - 840 SNB – 780 ANB- 60 Mnd- FH- 360 U1 to SN -1140 U1 to NA- 320, 8mm L1 to MP- 930 L1 to NB- 260, 4mm www.indiandentalacademy.com
  29. 29. Cl. III Cl. I Cl.II Cl. III Cl. I Cl. II www.indiandentalacademy.com Cl. III Cl. I Cl. II
  30. 30. At the incisor level: Maxillary deficiency Normal transverse relationship www.indiandentalacademy.com Mandibular deficiency
  31. 31. At the Canine Level Hypo-maxilla Normo -transversal www.indiandentalacademy.com Hypo-mandible
  32. 32. At the Molar level: Maxillary deficiency Normal transverse relationship www.indiandentalacademy.com Mandibular deficiency
  33. 33. Thus, In the absence of functional anomalies: 1. The dento-alveolar compensations (inclination and angulation) take place in a coherent way, in accordance with every single facial type, determined by skeletal relationships, either established in the three planes. www.indiandentalacademy.com
  34. 34. 2. No matter what technique is used, the information (torque and angulation) we apply must also be coherent in the three planes. In the sagittal plane, the inclinations (or torque ) of the incisors must be coordinated with the angulations of the buccal segments in a well balanced dento-alveolar system www.indiandentalacademy.com
  35. 35. •The torque level is high on the incisors, the angulation values in the buccal segments, especially on the canines will be greater. •On the contrary, if the torque level on the incisors is low, the angulations in the buccal segments, especially on the canines, will be smaller. www.indiandentalacademy.com
  36. 36. www.indiandentalacademy.com
  37. 37. In this case, the high torque level on the incisors doesn’t come with a sufficient angulation of the buccal segments; this creates a high risk of root approximation. www.indiandentalacademy.com
  38. 38. Here, the high level of torque on the incisors comes with a sufficient canine angulation but an insufficient angulation of the bicuspids; this creates an occlusal disturbance and a risk of root approximation. www.indiandentalacademy.com
  39. 39. www.indiandentalacademy.com
  40. 40. www.indiandentalacademy.com
  41. 41. www.indiandentalacademy.com
  42. 42. www.indiandentalacademy.com
  43. 43. www.indiandentalacademy.com
  44. 44. www.indiandentalacademy.com
  45. 45. www.indiandentalacademy.com
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  47. 47. www.indiandentalacademy.com
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  49. 49. www.indiandentalacademy.com
  50. 50. www.indiandentalacademy.com
  51. 51. www.indiandentalacademy.com
  52. 52. Here, the canine has a positive torque, which is adopted to the transverse skeletal relationships: if the torque on the bicuspids is not coordinated, an occlusal disharmony is created. www.indiandentalacademy.com
  53. 53. www.indiandentalacademy.com
  54. 54. “A normal face is no longer one where cephalometric values are closest to the mean, but one whose cephalometric values show relationships harmony defined in in their variable association tables. In this concept, there is no such thing as a unique normal face defined by a mean value, there are a series of normal faces” - J. Dibbets. www.indiandentalacademy.com
  55. 55. www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com

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