Developmental abnormalities of teeth /certified fixed orthodontic courses by Indian dental academy


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  • Anadontia: a complete absence of one or both dentition. Hypodontia: one or several teeth are missing. Hyperdontia: There are teeth additional to those of the the normal series.
  • The dental chamber has a greater apico-occlusal height than in normal teeth, with no constriction at the level of the amelocemental junction with the result that the chamber extends apically well beyond the cervix.
  • A deformity in which the crown of the tooth is displaced from its normal alignment with the root, so that the tooth is severely bent along its long axis. Dilaceration is usually the result of acute mechanical trauma and most frequently involves the maxillary incisor.
  • Developmental abnormalities of teeth /certified fixed orthodontic courses by Indian dental academy

    1. 1. School ofDevelopmental Abnormalities of Teeth INDIAN DENTAL ACADEMY Leader in Continuing Dental Education
    2. 2. School of ClassificationAnomalies of NumberAnomalies of SizeAnomalies of ShapeAnomalies of StructureAnomalies of Color
    3. 3. School of Anomalies of Number1. Anodontia: a complete absence of one or both dentition.2. Hypodontia (partial anodontia): a deficiency in tooth number.3. Hyperdontia (Supernumerary Teeth): an excess in tooth number. a. Mesiodens b. Distomolar
    4. 4. School of
    5. 5. School of Anomalies of Size1. Microdontia2. Macrodontia
    6. 6. School of Anomalies of Shape1. Gemination2. Fusion3. Concrescence4. Dilaceration5. Enamel Pearl (enameloma)6. Talon Cusp7. Taurodontism8. Dens in Dente (dens invaginatus)9. Dens Evaginatus10.Supernumerary Roots www.indiandentalacademy.co11.Hypercementosis
    7. 7. School of GeminationThe partial development of two teeth from a single tooth bud followingincomplete division. An incomplete division of a singletooth bud resulting in a bifid crownwith a single pulp chamber.
    8. 8. School of
    9. 9. School of FusionThe dentinal union of two embryologicallydeveloping teeth.Fused teeth can contain two separate pulp chamber, may appear as large bifidcrowns with one chamber.
    10. 10. School of
    11. 11. School of ConcrescenceAn acquired disorder in which the roots ofone or more teeth are united by cementunalone after formation of the crowns.
    12. 12. School of
    13. 13. School ofGEMINATION FUSION CONCRESCENCE One bud Two buds Two buds One tooth Two teeth Two teeth One canal Dentin union Cementum union
    14. 14. School of Dens InvaginatusAn extra cusp, usually in the centralgroove or ridge of a posterior toothand lateral incisor.
    15. 15. School of Dens in Dente A condition resulting from theinvagination of the inner enamelepithelium producing the appearanceof a tooth within a tooth.
    16. 16. School of Dens in Dente(dens invaginatus)
    17. 17. School of TaurodontTaurodont teeth are characterized byhaving a significantly elongated pulpchamber with short stunted roots,resulting from the failure of the properlevel of horizontal invagination ofHertwig’s epithelial root sheath..
    18. 18. School of Taurodontism-bull like
    19. 19. School of Dilaceration Dilaceration refers to an abnormalbend of the root during its developmentand is thought to result from a traumaticEpisode.
    20. 20. School
    21. 21. School of Anomalies of Structure1. Enamel hypoplasia caused by amelogenesis imperfecta (genetic)2. Enamel Hypoplasia caused by febrile Illness or Vitamin Deficiency3. Enamel hypoplasia resulting from local infection or Trauma a. Turners Tooth4. Enamel hypoplasia resulting from fluoride Ingestion (dental fluorosis) a. Mottling
    22. 22. School of Anomalies of Structure5. Enamel hypoplasia resulting from congenital syphilis (Treponema pallidum) a. Hutchinsons incisors b. Mulberry molars6. Enamel hypoplasia resulting from birth injury, premature birth or idiopathic factors7. Enamel hypocalcification8. Dentinogenesis imperfecta9. Dentin dysplasia10. Regional Odontodysplasia (Ghost teeth)
    23. 23. School of Amelogenesis ImperfectaClassification of AIType I: hypoplasticTypeII: hypomaturationTypeIII: hypocalcifiedTypeIV: hypomaturation-hypoplastic with taurodontism
    24. 24. School of Amelogenesis
    25. 25. School ofenamel hypoplasia
    26. 26. School of enamel
    27. 27. School of Turner
    28. 28. School of Dental
    29. 29. School of Hutchinson
    30. 30. School of Dentinogenesis ImperfectaClassification of DIType I: occures with osteogenesis imperfectaTypeII: hereditary opalescent dentinTypeIII: Brandywine type a shell-like appearance and multipe pulp exposures.
    31. 31. School of Dentinogenesis
    32. 32. School
    33. 33. School of Anomalies of Color — Discoloration of teeth Etiology Surface deposits (Extrinsic stains) Changes in structure or thickness of dental tissues Diffusion of pigments into dental tissues Pigments incorporated during formation of dental tissues.
    34. 34. School of Extrinsic stains Substances in the diet Habitual chewing, betel nut, tobacco Tobacco smoking Medicaments Chromogenic bacteria
    35. 35. School of Changes in structure Enamel hypoplasias, fluorosis Amelogenesis imperfecta, hypocalcified, hypomaturation, and hypoplastic types Enamel opacities Enamel caries Dentinogenesis imperfecta age changes in dental tissues
    36. 36. School of Diffusion of pigments Extrinsic stains Endodontic materials Products of pulp necrosis
    37. 37. School of Pigments incorporation Bile pigments Porphyrins Tetracycline
    38. 38. School ofTetracycline stained teeth
    39. 39. School
    40. 40. School
    41. 41. School of Composite resin
    42. 42. School
    43. 43. School ofOther disorders of teeth
    44. 44. School of
    45. 45. School of
    46. 46. School ofToothbrush abrasion
    47. 47. School of Thank you for