Category: Oral Pathology

TAURODONTISM #NEETMDS

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  1. Also called as Bull’s teeth
  2. Increase in size of crown 
  3. Decrease in size of root 
  4. Abnormally large sized pulp chambers 
  6. CLASSIFICATION = Ratio of crown body/ root 
  8. Syndromes associated with 
    1. Klinefelter syndrome 
    2. Type 5 AI 
    3. Down syndrome 
    4. Ectodermal dysplasia
    5. Tricho Dento Osseous syndrome
      2. Tricho = Kinky coiled 
      3. Dento = Enamel hypoplasia and Taurodontism 
      4. Osseous = Sclerotic bone 

TALON’S CUSP #NEET 

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  1. Talon means extra claw = Extra cusp
  2. Seen in Labial or lingual side of incisor  
  4. MC seen in Central Incisors 
  5. TYPES
True Talon
Major typeCovers more than > ½ of distance from CEJ
Semi Talon
Minor type Covers >¼ and <½ of distance from CEJ
Trace Talon
Prominent congulum <¼ from CEJ
  1. Associated with
    1. Rubinstein Taybi syndrome 
      1. Broad thumb 
      2. Broad first toe
      3. Short Stature
    2. Sturge Weber Syndrome = seen in Benign and malignant tumors 
    3. Mohr Syndrome = type of oral facial digital syndrome
      1. ORO = Cleft tongue or Multilobed Tongue 
      2. FACIAL = Median Cleft lip 
      3. DIGITAL = Multiple fingers 

GHOST TEETH 

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  1. Large sized pulp chambers 
  2. Thin enamel and dentin
  3. Also called, Regional Odontodysplasia 
  4. Also called odontogenesis imperfecta 
  5. Also called odontogenic dysplasia 
  6. H/P
    1. UNMINERALIZED DENTIN quantity is more
      1. Wide predentin zone 
      2. Large areas of interglobular dentin 
    2. Presence of enameloid conglomerates
      1. Calcification seen in REE of unerupted teeth

DENTIN DYSPLASIA TYPE 1 

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  1. Extremely short roots
  2. Obliteration of Pulp chambers with osteodentin 
  3. Osteodentin – histologically looks like
    1. Cascades of dentin = one layer of dentin forms, it stops and then new layer of dentin forms on top of it
    2. Lava flowing around boulders
  4. Few pulpal remnants are left behind – crescent shaped pulpal remnants 

DENTINOGENESIS IMPERFECTA 

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  1. Not associated with osteogenesis imperfecta 
  2. Mutation in gene – DSPP – dentin sialo phospho protein 
  3. DSPP located on chromosome number 4 
  4. Revised shield classification
    1. Common traits seen in both types
      1. Flat DEJ line 
      2. Gene = DSSP

Type 1
Opalescent dentin type 		Type 2
Brandy white type 

Bulbous crowns are seen With cervical constriction Giving tulip shaped crownsWHY? Because of atypical dentin formation = obliteration of pulp chambers
Large sized pulp chambers Very thin dentin – hence, radiographically SHELL TEETH