Clasps orthodontic /certified fixed orthodontic courses by Indian dental academy

3,757 views

Published on


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

0 Comments
9 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
3,757
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
2
Comments
0
Likes
9
Embeds 0
No embeds

No notes for slide

Clasps orthodontic /certified fixed orthodontic courses by Indian dental academy

  1. 1. Clasps www.indiandentalacademy.com
  2. 2. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  3. 3.  The name clasp is derived from a French word “UYPTAN” which means to embrace. Clasps are the retentive components of the orthodontic appliances. www.indiandentalacademy.com
  4. 4.  RETENTION :- is the means whereby the displacement of an appliance is resisted. www.indiandentalacademy.com
  5. 5. Why retention is needed ?   IF poor retention - difficulty to wear-poor pt co-operation. If the appliance is not seated properly-the active components may not function properly due to continual movement of appliance, breakage of springs are liable. www.indiandentalacademy.com
  6. 6.   In children the undercut may lie just below the gingival margin, and it is necessary to construct the clasp so that it displaces the gingival margin slightly. It is important that the clasp does not extend too far into an undercut area. www.indiandentalacademy.com
  7. 7. IDEAL REQUIREMENTS Unobtrusive.  Not impinge.  Close contact to the tooth.  Usable in both deciduous and permanent dentition.  Adequate retention.  www.indiandentalacademy.com
  8. 8. No active force on the anchor tooth.  Rigid  Easy to fabricate and also replace if needed.  Not interfere in the growth of jaws and eruption of teeth.  Clasps should be at the center of the buccal segment to ensure stability of the appliance.  www.indiandentalacademy.com
  9. 9. CLASSIFICATION A. Hand Made Machine Made. B. Single tag arm Double tag arm www.indiandentalacademy.com
  10. 10. MODE OF ACTION   Clasp engage onto the undercuts (constricted areas on the teeth.) Two types of undercuts.  Buccal / Lingual Cervical undercuts.  Mesial / Distal Proximal undercuts. www.indiandentalacademy.com
  11. 11. CIRCUMFERENTIAL CLASP www.indiandentalacademy.com
  12. 12.      Circumferential clasp / C-Clasp / 3/4th Clasp. To use the bucco-cervical undercut. 2nd molar and canines. Single retention arm. 1mm wire used in molars. www.indiandentalacademy.com
  13. 13. www.indiandentalacademy.com
  14. 14. Advantages of C clasp     Good retention. Easy to fabricate. Single occlusal crossover wire. Easy to replace. www.indiandentalacademy.com
  15. 15. Disadvantages of C clasp      Not on semi-erupted tooth. Decalcification of cervical margin. Gingival irritation. Plaque accumulation enhanced. Easily distort. www.indiandentalacademy.com
  16. 16. JACKSONS CLASP www.indiandentalacademy.com
  17. 17.     V.H. Jackson 1906 Jacksons Clasp / Full Clasp / U Clasp. Both bucco-cervical and proximal undercuts. 0.7mm to 1mm. www.indiandentalacademy.com
  18. 18. www.indiandentalacademy.com
  19. 19. Advantages   Simple design Adequate retention. www.indiandentalacademy.com
  20. 20. Disadvantage    Not useful in partially erupted teeth. Difficult to adjust. Not on unfavorably inclined tooth. www.indiandentalacademy.com
  21. 21. SOUTHEND CLASP www.indiandentalacademy.com
  22. 22.   Most common for anterior anchorage. Single arrowhead between CI with wire following the gingival margin. www.indiandentalacademy.com
  23. 23. www.indiandentalacademy.com
  24. 24. Advantages of southend clasp    Unobtrusive. Good retention. Even be used if Incisors are proclined. www.indiandentalacademy.com
  25. 25. TRIANGULAR CLASP www.indiandentalacademy.com
  26. 26.      Also called as MODIFIED ZIMMERMANS CLASP. Excellent retention by the single arrowhead in the interproximal area. Open end towards the occlusal. Can engage elastics. 0.7mm wire www.indiandentalacademy.com
  27. 27. www.indiandentalacademy.com
  28. 28. Advantages of triangular clasp     Easy to fabricate. Excellent retention. Pre fabricated available. Elastics can be engaged. www.indiandentalacademy.com
  29. 29. Disadvantages of triangular clasp   Not useful if adjacent tooth is absent. Used as secondary or additional retention. www.indiandentalacademy.com
  30. 30. BALL END CLASP www.indiandentalacademy.com
  31. 31.   Action and location similar to triangular clasp. Prefabricated available. Can be made by adding solder to end of a wire. www.indiandentalacademy.com
  32. 32. www.indiandentalacademy.com
  33. 33. Advantages of BALL END CLASP     Easy to fabricate. Single occlusal interference. Less gingival irritation. Easy to replace. www.indiandentalacademy.com
  34. 34. Disadvantages of BALL END CLASP    Short arm makes adjustment difficult. Can not be used for primary retention. Cannot be used in absence of adjacent tooth. www.indiandentalacademy.com
  35. 35. SCHWARZ CLASP www.indiandentalacademy.com
  36. 36.    Also called as ARROWHEAD CLASP. A.M. Schwarz 1935. Mesial and distal undercuts of the teeth. www.indiandentalacademy.com
  37. 37. www.indiandentalacademy.com
  38. 38. Advantages of SCHWARZ CLASP      Reliable retention. Does not interfere in posterior occlusion. More wire hence more flexible. More easy to adjust. Enhances eruption. www.indiandentalacademy.com
  39. 39. Disadvantages of SCHWARZ CLASP      Difficult to fabricate. Needs special plier. Irritates soft tissue. Tends to separate teeth. Is bulky hence less patient compliance. www.indiandentalacademy.com
  40. 40. CROZAT CLASP www.indiandentalacademy.com
  41. 41.    Crozat in 1920 Along with the u clasp a stright wire is soldered on the base (Cresent). Strong retention is possible www.indiandentalacademy.com
  42. 42. www.indiandentalacademy.com
  43. 43. ADAMS CLASP www.indiandentalacademy.com
  44. 44.       Adams clasp / modified arrowhead clasp / liverpool clasp / universal clasp. C. PHILIPS ADAMS in May 1950. Most widely used clasp. Distobuccal and mesiobuccal undercuts. Does not separate teeth like a arrowhead clasp. 0.7mm posteriors 0.6mm anteriors. www.indiandentalacademy.com
  45. 45. FABRICATION www.indiandentalacademy.com
  46. 46. parts BRIDGE o 2 ARROWHEADS o 2 TAG ARMS o www.indiandentalacademy.com
  47. 47. BRIDGE   Is 2/3rd the mesio dital width of the tooth, or slightly less then the distance between mesiobuccal and distobuccal undercuts, or length should be equal to the intercuspal distance. Is 1-2mm away from the buccal surface of the tooth.  Is at 45o to the buccal surface of the tooth.  Should be straight. www.indiandentalacademy.com
  48. 48. Arrowheads     They should lie in the disto- and mesio buccal undercuts. Shaped according to the curve of the gum margins in the direction of the interdental papilla. Long enough to keep the bridge at a proper distance. Should not touch the adjacent teeth www.indiandentalacademy.com
  49. 49. Tag arms    Closely fitted to the contact points, down to the interdental embrasure. Space between the tag arms and palate for flow of acrylic. No sharp bends. www.indiandentalacademy.com
  50. 50. Advantages of ADAMS CLASP        Small neat and unobtrusive. Any tooth. Both deciduous and permanent dentition. Even on semi erupted tooth. No specialized pliers required. Can be modified as needed. No. of variations are available. www.indiandentalacademy.com
  51. 51. Disadvantages of ADAMS CLASP     Unwanted palatal tipping if gets activated. May lead to elongation of tooth if is fitting tightly. Can be repaired only if fractured through the arrowheads. Cannot be given on proclined anteriors. www.indiandentalacademy.com
  52. 52. ADJUSTMENTS   NEAR THE ARROWHEADS ON THE OCCLUSAL CROSS OVER www.indiandentalacademy.com
  53. 53. MODIFICATIONS www.indiandentalacademy.com
  54. 54. Anterior adams   0.6mm Also called double clasp. www.indiandentalacademy.com
  55. 55. With distal extension/ traction hook   To engage elastics Not given if sulcus is shallow. www.indiandentalacademy.com
  56. 56. With eyelet www.indiandentalacademy.com
  57. 57. With a soldered hook www.indiandentalacademy.com
  58. 58. With a soldered tube www.indiandentalacademy.com
  59. 59. With a single arrowhead www.indiandentalacademy.com
  60. 60. With accessory arrowhead www.indiandentalacademy.com
  61. 61. Smart clasp www.indiandentalacademy.com
  62. 62. Delta clasp www.indiandentalacademy.com
  63. 63. www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com

×