classification of malocclusion

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classification of malocclusion

  1. 1. Classification of malocclusion <ul><li>Teeth malposition </li></ul><ul><li>Arch relationship abnormality </li></ul><ul><li>- Dentoalveolar relationship </li></ul><ul><li>- Skeletal relationship </li></ul><ul><li>Dr shabeel pn </li></ul><ul><li>http://hi-dentfinishingschool.blogspot.com/ </li></ul>
  2. 5. Teeth malposition:” Version”
  3. 6. Teeth malposition: transpostion
  4. 7. Teeth malposition: ectopic eruption
  5. 8. Classification of malocclusion <ul><li>Antrio-posterior arch relationship: </li></ul><ul><li>Molar relationship ( Angle’s Classification) </li></ul><ul><li>Molar relationship (Andrew’s Classification) </li></ul><ul><li>Incisor relationship( British system). </li></ul>
  6. 9. Classification of malocclusion <ul><li>Antro-posterior (molar classification) </li></ul><ul><li>Class I : The mesio-buccal cusp of the upper first permanent molar occludes in the buccal groove of the lower first permanent molar. </li></ul>
  7. 11. Classification of malocclusion <ul><li>Antro-posterior (molar classification) </li></ul><ul><li>Class II : The mesio-buccal cusp of the upper first permanent molar occludes anterior to the buccal groove of the lower first permanent molar. </li></ul>
  8. 14. Classification of malocclusion <ul><li>Antro-posterior (molar classification) </li></ul><ul><li>Class III : The mesio-buccal cusp of the upper first permanent molar occludes posterior to the buccal groove of the lower first permanent molar. </li></ul>
  9. 16. Classification of malocclusion <ul><li>Antro-posterior (incisor classification) </li></ul><ul><li>Class I : The incisal edge of the lower incisors bite on the cingulum of the upper incisors </li></ul>
  10. 18. Classification of malocclusion <ul><li>Antro-posterior (incisor classification) </li></ul><ul><li>Class II/1 : The incisal edges of the lower incisors bite behind the cingulum of the upper incisors with the upper incisors proclined </li></ul>
  11. 22. Classification of malocclusion <ul><li>Antro-posterior (incisor classification) </li></ul><ul><li>Class II/2 : The incisal edges of the lower incisors bite behind the cingulum of the upper incisors with the upper incisors retroclined </li></ul>
  12. 25. Classification of malocclusion <ul><li>Vertical Classification: </li></ul><ul><li>Normally the vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation is about one third of the lower incisors </li></ul>
  13. 26. Normal overbite
  14. 27. Classification of malocclusion <ul><li>Vertical Classification: </li></ul><ul><li>Open bite: The lack of vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation. </li></ul>
  15. 30. Reduced overbite
  16. 31. Classification of malocclusion <ul><li>Vertical Classification: </li></ul><ul><li>deep bite: excessive vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation. </li></ul>
  17. 32. Deep overbite
  18. 34. Classification of malocclusion <ul><li>Transverse Classification: </li></ul><ul><li>cross bite: The lower molars overlap the upper molars. </li></ul>
  19. 36. Classification of malocclusion <ul><li>Transverse Classification: </li></ul><ul><li>scissor bite: The lower molars bite completely lingual to the upper molars. </li></ul>
  20. 37. scissor bite
  21. 38. Skeletal Classification
  22. 39. Skeletal Classification
  23. 40. Skeletal Classification

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