Maxillary deciduous anterior teeth

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Maxillary deciduous anterior teeth

  1. 1. Maxillary Deciduous Anterior Teeth<br />Central Incisors<br />Lateral Incisors<br />Canines<br />
  2. 2. Age of Eruption<br />
  3. 3. Maxillary Deciduous Central Incisors<br />
  4. 4. Maxillary Deciduous Central Incisors<br />Labial Surface<br />The mesio-distal diameter is greater than the cervico-incisallength. <br />Mesio-incisalangle is a right angle but the distal-incisalangle is round.<br />
  5. 5. Maxillary Deciduous Central Incisors<br />Labial Surface<br />Incisor edge is nearly straight<br />Cervical ridge is obvious<br />Developmental grooves are not seen and the labial surface is very smooth<br />
  6. 6. Maxillary Deciduous Central Incisors<br />Labial Surface<br />Symmetrical<br />Contact areas are the same with the permanent successors<br />
  7. 7. Maxillary Deciduous Central Incisors<br />Lingual Surface<br />Well –developed marginal ridges and highly developed cingulum<br />Lingual fossa is small <br />Cingulum is large<br />
  8. 8. Maxillary Deciduous Central Incisors<br />Proximal Surface<br />La-li small incisal thirds to middle thirds, crowns wider cervical third because of large cingulum.<br />The mesial and distal aspects are similar, triangle.<br />
  9. 9. Maxillary Deciduous Central Incisors<br />Proximal Surface<br />Curvature of cervical line is distinct, curving toward the incisal edge.<br />
  10. 10. Maxillary Deciduous Central Incisors<br />Incisal surface<br />It is relatively straight and the labial surface is much broader and smoother than the lingual surface<br />
  11. 11. Maxillary Deciduous Lateral Incisor<br />
  12. 12. Maxillary Deciduous Lateral Incisor<br />Similar to the central incisor from all aspects but differs in the ff.:<br /><ul><li>Crown is smaller in all directions
  13. 13. Disto-incisal angle are more rounded
  14. 14. Root much longer </li></li></ul><li>Maxillary Deciduous Lateral Incisor<br />Labial Surface<br />Cervico-incisal diameter is greater than its Mesio-distal diamter<br />La Surface is smooth<br />Root is cone-shaped with tapered sides<br />
  15. 15. Maxillary Deciduous Lateral Incisor<br />Lingual Surface<br />Well developed Marginal Ridges <br />Prominent Cingulum<br />
  16. 16. Maxillary Deciduous Lateral Incisor<br />Proximal Surface<br />MI < sharp<br /> DI < more Rounded<br />CEJ is distinct, curving towards incisal ridge<br />Occlusal Surface<br />Circular crown outline<br />
  17. 17. Maxillary Deciduous Canine<br />
  18. 18. Maxillary Deciduous Canine<br />Labial Aspect<br />Crown constricted at the cervix<br />Mesioincisal angle more angular<br />Distoincisal angle rounded<br />Cervical line is flat<br />Sharp cusp tip<br />Mesial cusp slope longer than distal cusp slope<br />
  19. 19. Maxillary Deciduous Canine<br />Labial Aspect<br />Contact areas are near the center of the crown cervicoincisally<br />MCA more cervically positioned than DCA<br />Root is longest among all the primary teeth prior to resorption<br />Blunt root apex<br />
  20. 20. Maxillary Deciduous Canine<br />Lingual Aspect<br />Bulky cingulum<br />Well-developed MMR and DMR<br />Lingual ridge distal to the middle of crown<br />Narrower and deeper distal fossa<br />Broader and shallower mesial fossa<br />
  21. 21. Maxillary Deciduous Canine<br />Mesial Aspect<br />Short incisal border<br />Convex labial outline<br />Lingual outline is convex at the cingulum, becomes concave and resumes convexity at the cusp tip<br />Concave cervix<br />Mesial surface is evenly convex in all directions<br />

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