POINTS TO REMEMBER FOR ORAL MEDICINE

RADIOGRAPHIC CHANGES IN VARIOUS TOOTH ABNORMALITIES

  • GEMINATION (Incomplete) :  Two crowns with one root

  • DILACERATION :  Sharp bend in the tooth (mostly root)

  • DENS IN DENTE :  Tooth within a tooth

  • TAURODONTISM :  Large crown with small root, too much apically placed bifurcation

  • CONCRESCENCE:  Joining roots of many teeth obliteration of periodontal ligament space

  • AMELOGENESIS IMPERFECTA : Little or enamel on tooth

  • DENTINOGENESIS IMPERFECTA : Obliteration of pulp chamber

  • GHOST TEETH : Decreased radiosensitivity of tooth; abnormally large pulp chamber

  • HYPERCEMENTOSIS : Bulbous root

  • DENTIN DYSPLASIA : Abnormally short, blunt root, molar roots appear ‘w’ shaped

  • SUPERNUMERARY TOOTH :  Mostly small and conical shaped

  • PIT AND FISSURE CARIES : Triangular-shaped radiolucent with its base towards DEJ (dentinoenamel junction)

  • SMOOTH SURFACE CARIES : Triangular-shaped radiolucent with it’s base towards surface of the tooth

  • EXTERNAL RESORPTION OF TOOTH : Moth-eaten irregular destruction of root surface

  • INTERNAL RESORPTION : Well-defined spherical radiolucency of dentin in continuation with the pulp

  • COMPOUND ODONTOID :  Multiple miniature teeth projecting from a single focus