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Skelatal maturity indicators as seen in the transverse section of the mandible

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Skelatal maturity indicators as seen in the transverse section of the mandible

  1. 1. SKELATAL MATURITY INDICATORS AS SEEN IN THE TRANSVERSE SECTION OF THE MANDIBLE   www.indiandentalacademy.com
  2. 2. www.indiandentalacademy.com
  3. 3. NANDA HUNTER BJORK BROWN BISHARA BODY HEIGHT www.indiandentalacademy.com
  4. 4. JHONSTON BERGERSON GRAVE PITESKI AND FISHMAN HAND AND WRIST www.indiandentalacademy.com
  5. 5. HAGG LEWIS DEMINJIAN SEXUAL MATURITY www.indiandentalacademy.com
  6. 6. CHERTKOW ENGSTROM COUTINHO DENTAL INDICATORS www.indiandentalacademy.com
  7. 7. LAMPARSKI O’REILLY CERVICAL VERTEBRAE www.indiandentalacademy.com
  8. 8. HAND WRIST RADIOGRAPHS CERVICAL VERTEBRAL MATURITY www.indiandentalacademy.com
  9. 9. Differential of normal growth In search of achieving a more reliable and accurate skeletal maturity indicator www.indiandentalacademy.com
  10. 10. MATERIALS AND METHODS A.B.SHETTY MEMORIAL INSTITUTE OF DENTAL SCIENCES www.indiandentalacademy.com
  11. 11. Sample size: 60(30 males, 30 females) Age group: 9-16yrs Radiographs taken: Lateral cephalogram Transverse slicing sections www.indiandentalacademy.com
  12. 12. C o m p le t io n M a t u r a t io n D e c e le r a t io n T r a n s it io n A c c e le r a t io n G R O U P A m a le s C o m p le t io n M a t u r a t io n D e c e le r a t io n T r a n s it io n A c c e le r a t io n G R O U P B fe m a le s S U B J E C T S www.indiandentalacademy.com
  13. 13. Condylion Gnathion Gonion Mandibular measurements recorded Ascending ramus length Mandibular corpus length Effective mandibular length www.indiandentalacademy.com
  14. 14. Measurements taken of the symphysis region Buccal cortical thickness Lingual cortical thickness Lower border thickness Mandibular symphysis height Mandibular symphysis depth Symphysial index = sym height sym depth www.indiandentalacademy.com
  15. 15. Measurements recorded in the TSS view Buccal cortical thickness Lingual cortical thickness Lower border thickness Mandibular corpus height Mandibular corpus depth Corpus index = corpus height corpus depth www.indiandentalacademy.com
  16. 16. COMPARISON CORPUS INDEX MANDIBULAR LENGTH www.indiandentalacademy.com
  17. 17. RESULTS 0 0.5 1 1.5 2 2.5 3 acceleration transition deceleration maturation completion 0 20 40 60 80 100 120 140 corpus index effective mandibular length Corpus index Mandibular length 1.84 99.3 2.05 107.7 2.17 110.5 2.3 115 2.56 125 Group A www.indiandentalacademy.com
  18. 18. Corpus index Mandibular length 1.83 99.5 2.08 108 2.16 108 2.3 114 2.51 124 Group B 0 0.5 1 1.5 2 2.5 3 acceleration transition deceleration maturation completion 0 20 40 60 80 100 120 140 corpus index effective mandibular length www.indiandentalacademy.com
  19. 19. COMPARISON SYMPHYSIAL INDEX MANDIBULAR LENGTHwww.indiandentalacademy.com
  20. 20. Symphysial index Mandibular length 1.4 99.3 1.5 107.7 1.7 110.5 1.4 115 1.5 125 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 acceleration transition deceleration maturation completion 0 20 40 60 80 100 120 140 symphysial index effective mandibular length Group A www.indiandentalacademy.com
  21. 21. Symphysial index Mandibular length 1.5 99.5 1.4 108 1.5 108 1.3 114 1.5 124 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 acceleration transition deceleration maturation completion 0 20 40 60 80 100 120 140 symphysial index effective mandibular length Group B www.indiandentalacademy.com
  22. 22. EVIDENCE SIGNIFICANT AND RELATIVELY SIMPLE RELATIONSHIP STRUCTURES OF THE MANDIBULAR BODY AND ITS MATURITY. www.indiandentalacademy.com
  23. 23. www.indiandentalacademy.com
  24. 24. DISCUSSION Mandible Greatest growth Strongest, Largest bone Cause for most malocclusions Anterior-posterior Relationship + www.indiandentalacademy.com
  25. 25. Mandible Grows longer,more than maxilla Various Growth Modulationprocedures= Unfortunately untimely treatment may lead to relapse due to the continual growth of the mandible www.indiandentalacademy.com
  26. 26. Reliable indicator Intrinsic indicator Valuable tool Better diagnosis and treatment planning www.indiandentalacademy.com
  27. 27. SUMMARY www.indiandentalacademy.com
  28. 28. Further study with a larger sample Confirm Longitudinal study Useful and appreciated. www.indiandentalacademy.com
  29. 29. www.indiandentalacademy.com

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