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. SKELATAL MATURITY INDICATORS AS SEEN IN THE TRANSVERSE SECTION OF THE MANDIBLE www.indiandentalacademy.com
- 4. JHONSTON BERGERSON GRAVE PITESKI AND FISHMAN HAND AND WRIST www.indiandentalacademy.com
- 9. Differential of normal growth In search of achieving a more reliable and accurate skeletal maturity indicator www.indiandentalacademy.com
- 10. MATERIALS AND METHODS A.B.SHETTY MEMORIAL INSTITUTE OF DENTAL SCIENCES www.indiandentalacademy.com
- 11. Sample size: 60(30 males, 30 females) Age group: 9-16yrs Radiographs taken: Lateral cephalogram Transverse slicing sections www.indiandentalacademy.com
- 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. Condylion Gnathion Gonion Mandibular measurements recorded Ascending ramus length Mandibular corpus length Effective mandibular length www.indiandentalacademy.com
- 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. 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
- 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. 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
- 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. 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. EVIDENCE SIGNIFICANT AND RELATIVELY SIMPLE RELATIONSHIP STRUCTURES OF THE MANDIBULAR BODY AND ITS MATURITY. www.indiandentalacademy.com
- 24. DISCUSSION Mandible Greatest growth Strongest, Largest bone Cause for most malocclusions Anterior-posterior Relationship + www.indiandentalacademy.com
- 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. Reliable indicator Intrinsic indicator Valuable tool Better diagnosis and treatment planning www.indiandentalacademy.com
- 28. Further study with a larger sample Confirm Longitudinal study Useful and appreciated. www.indiandentalacademy.com
Notes de l'éditeur
- Keeping in mind the differential seen in the normal growth within an individual, the assessment of maturation of a structure based on the evaluation of another may not be accurate. Hence, understanding the importance of skeletal maturation in the diagnosis and treatment planning of an individual this study was undertaken in search of achieving a more reliable and accurate skeletal maturity indicator
- A definite curvi-linear increase was observed between the values of the mandibular corpus and the effective mandibular length. A similar increase of corpus index was observed corresponding with each stage of CVM. A definite intrinsic indicator scoring was observed with each stage of the cervical vertebral maturation.
- no significant co relation was found.
- According to Hassel and Farman’s description of the CVM stages,
- The cephalo-caudal gradient of growth shows the mandible being farther away from the brain grows for a longer time and more than the maxilla.