Brackets in orthodontics /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,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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Brackets in orthodontics /certified fixed orthodontic courses by Indian dental academy

  1. 1. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. What is a bracket??? www.indiandentalacademy.com
  3. 3. What is a bracket???  Bracket- an attachment that serves to deliver the necessary tooth moving forces.  Bracket may be defined as an orthodontic attachment secured to a tooth for the purpose of engaging an arch wire - Thurow www.indiandentalacademy.com
  4. 4. Ancient orthodontics splint of ivory www.indiandentalacademy.com
  5. 5. E.H ANGLE  Father of orthodontics  Valuable contributions  Latest – edgewise app  Angle’s line of occlusion www.indiandentalacademy.com
  6. 6. E.H ANGLE  All you can do is push, pull or turn a tooth.  Edgewise appliance - ‘‘Latest and the best’’  Evolution of edgewise appliance…. www.indiandentalacademy.com
  7. 7. Evolution of edgewise appliance  Angle graduated in 1878  1888 – angle system  Standard Orthodontic appliance should have 5 properties www.indiandentalacademy.com
  8. 8. Evolution of edgewise appliance  Simplicity  Stability  Efficiency  Delicacy  Inconspicuousness www.indiandentalacademy.com
  9. 9. Evolution of edgewise appliance Angle patented the jackscrew – he gave the credit for the regulating screw to dwinelle 1849- did not give credit to farrar who had described a similar appliance in 1876 – his rival. www.indiandentalacademy.com
  10. 10. Evolution of edgewise appliance www.indiandentalacademy.com
  11. 11. Evolution of edgewise appliance  1907 – angle discontinued the use of jack screws E Arch www.indiandentalacademy.com
  12. 12. Evolution of edgewise appliance  Heavy archwires supplied in 4 designs Basic E arch Ribbed E arch E arch without threaded ends E arch with hooks www.indiandentalacademy.com
  13. 13. Evolution of edgewise appliance Basic E arch www.indiandentalacademy.com
  14. 14. Evolution of edgewise appliance Ribbed E arch www.indiandentalacademy.com
  15. 15. Evolution of edgewise appliance E arch without threaded ends www.indiandentalacademy.com
  16. 16. Evolution of edgewise appliance E arch with hooks www.indiandentalacademy.com
  17. 17. Evolution of edgewise appliance  Problems with Angle’s E arch appliance 1. Removal of retention app – malocclusion. Axial relationship of teeth can not be accomplished Unstable results 2. 3. Teeth should be moved bodily www.indiandentalacademy.com
  18. 18. Evolution of edgewise appliance Pin and tube-1910 www.indiandentalacademy.com
  19. 19. Evolution of edgewise appliance Pin and tube-1910 Adv - root movement Disadv – technique sensitive and time consuming - rotational adjustments difficult to achieve www.indiandentalacademy.com
  20. 20. Evolution of edgewise appliance The Ribbon Arch-1915 Brackets www.indiandentalacademy.com
  21. 21. Evolution of edgewise appliance  Advantages  Disadvantages 1. Rotations readily accomplished Incisogingival Labiolingual 1. Enmasse movement of teeth Mesial and distal tipping bends 2. 3. 2. www.indiandentalacademy.com
  22. 22. Evolution of edgewise appliance contrast to ribbon arch??? 0.022×0.028 0.050 Inch wide Gold bracket Gold band Ligature tie www.indiandentalacademy.com
  23. 23. Evolution of edgewise appliance Gold alloy archwires First order bends Second order bends Third order bends www.indiandentalacademy.com
  24. 24. Cornerstones of modern edgewise orthodontics  Tooth movement in all 3 planes  Philosophy of treating to ideal arch form  Use of rectangular arch wires www.indiandentalacademy.com
  25. 25. Single width bracket www.indiandentalacademy.com
  26. 26. Siamese twin bracket swain Interbracket span 050’’ www.indiandentalacademy.com
  27. 27. www.indiandentalacademy.com
  28. 28. Posterior brackets  Twice the width of single width bracket 010’’ www.indiandentalacademy.com
  29. 29. Curved base twin bracket Positive control Mechanism of action www.indiandentalacademy.com
  30. 30. Twin bracket – important points   Rotational control : mainly by deflection of arch wire Positive control Disadvantages 1. 2. 3. 4. 10% play of arch wire Inter bracket span is reduced  Resiliency Closing loop arch wires Second order bends www.indiandentalacademy.com
  31. 31. Lewis bracket Soldered auxiliary rotation arms Single width feature- retained www.indiandentalacademy.com
  32. 32. Lewis bracket  Types: www.indiandentalacademy.com
  33. 33. Lewis bracket  Advantages: Does not interfere with resiliency ,closing loops &second order bends 100% correction & over corrections Wings though rigid can be bent www.indiandentalacademy.com
  34. 34. Curved base lewis bracket Increase contact with band . Reduces trapping of the food. www.indiandentalacademy.com
  35. 35. Vertical slot Lewis bracket 020 x020 vertical slot www.indiandentalacademy.com
  36. 36. Steiner bracket  Flexible rotation arms - did not rely entirely on the resiliency of archwire for tooth rotation.  Single width edgewise bracket www.indiandentalacademy.com
  37. 37. Broussard bracket Grayford broussard Modified edgewise bracket in which there is addition of 0.0185 x 0.046 slot –to accept doubled 0.018 auxiliary wire www.indiandentalacademy.com
  38. 38. Tweed-Merrifield appliance     Double width bracket on 6 anteriors Intermediate Single width brackets on Premolar bands Twin brackets on molars 0.022 tubes on second molars www.indiandentalacademy.com
  39. 39. Andrews straight wire appliance    BRACKETS stand in between tooth and the orthodontist 1960 – concept of fully programmed appliance Advantage of FPA ELIMINATES WIRE BENDING www.indiandentalacademy.com
  40. 40. Andrews  Driving force for FPA 1. Analysis of orthodontically treated final occlusion Analysis of naturally occurring optimal occlusion Six keys to normal occlusion 2. 3. www.indiandentalacademy.com
  41. 41. Andrews Andrews plane www.indiandentalacademy.com
  42. 42. Andrews FACC FA point Angulation www.indiandentalacademy.com
  43. 43. Andrews Inclination www.indiandentalacademy.com
  44. 44. Interarch relationship www.indiandentalacademy.com
  45. 45. Crown angulation www.indiandentalacademy.com
  46. 46. Crown inclination www.indiandentalacademy.com
  47. 47. Crown inclination of posteriors www.indiandentalacademy.com
  48. 48. Absence of rotations Curve of spee Tight contacts www.indiandentalacademy.com
  49. 49. Andrews classification 1. Non programmed appliance-a set of brackets designed the same for all tooth types ,relying totally on wire bending. 2. Partly programmed appliance- a set of brackets designed with some in built features ,but always require some wire bending 3. Fully programmed appliance- a set of brackets designed to guide teeth directly to their goal positions with unbent wires. www.indiandentalacademy.com
  50. 50. Features of Edgewise Bracket www.indiandentalacademy.com
  51. 51. Non programmed bracket  Angle’s edgewise app FA point on FACC All crowns will have equal facial prominences Extensive Wire bending www.indiandentalacademy.com
  52. 52. Non programmed bracket  Design shortcomings 1. Bracket base perpendicular to bracket stem. 2. Bracket bases are not contoured. 3. Slots are not angulated 4. Bracket stem are of equal faciolingual thickness. 5. Maxillary molar offset is not built in. 6. Bracket siting techniques are unsatisfactory. www.indiandentalacademy.com
  53. 53. Non programmed bracket 1. Bracket base perpendicular to bracket stem. www.indiandentalacademy.com
  54. 54. Non programmed bracket www.indiandentalacademy.com
  55. 55. Non programmed bracket www.indiandentalacademy.com
  56. 56. Non programmed bracket  Bracket bases are not contoured occlusogingivally. www.indiandentalacademy.com
  57. 57. Non programmed bracket Greater than 2° Greater than 0.5 mm www.indiandentalacademy.com
  58. 58. Non programmed bracket www.indiandentalacademy.com
  59. 59. Non programmed bracket www.indiandentalacademy.com
  60. 60. Non programmed bracket Mesio-distal base contour www.indiandentalacademy.com
  61. 61. Non programmed bracket  Slots not angulated www.indiandentalacademy.com
  62. 62. Non programmed bracket www.indiandentalacademy.com
  63. 63. Non programmed bracket  Bracket stem are of equal faciolingual thickness www.indiandentalacademy.com
  64. 64. Non programmed bracket www.indiandentalacademy.com
  65. 65. Non programmed bracket Maxillary molar offset is not built in. www.indiandentalacademy.com
  66. 66. Non programmed bracket Bracket siting techniques are unsatisfactory. Angulation -Long axis-crown -Long axis-tooth -Incisal edges- curved ,worn -Marginal ridges -Contact points www.indiandentalacademy.com
  67. 67. Non programmed bracket  Holdaway advocates that the bracket siting should be altered according to the malocclusion.  Tweed recommends siting brackets in specified number of millimeters from the incisal edge.  According to Jarabak bracket sites for inclination should be determined by the shape of the crown. www.indiandentalacademy.com
  68. 68. Non programmed bracket  Saltzman recommends except for the maxillary lateral incisor ,brackets should be located in the middle third of the crown.  Lindquist brackets according to the ht of marginal ridges on posteriors. www.indiandentalacademy.com
  69. 69. Non programmed bracket Accuracy- Bracket base along FACC At FA point 1. 2 degrees 2. .5 mm of the FA point. www.indiandentalacademy.com
  70. 70. Wire bending  Primary wire bends (1st, 2nd, 3rd order )  Secondary wire bends  tertiary wire bends www.indiandentalacademy.com
  71. 71. Wire bending angulation www.indiandentalacademy.com
  72. 72. Wire bending Occlusogingival slot positioning www.indiandentalacademy.com
  73. 73. Wire bending Inclination www.indiandentalacademy.com
  74. 74. Wire bending Prominence differences www.indiandentalacademy.com
  75. 75. Wire bending Prominence differences www.indiandentalacademy.com
  76. 76. Wire bending Total 76 bends Fully programmed appliance www.indiandentalacademy.com
  77. 77. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com

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