Cleidocranial   Dysplasia              Presented by:      Dela Cruz, Beatrice, D.                    DMD2D
Definition   Cleidocranial Dysplasia (cleido = collar bone, +   cranial = head, + dysplasia = abnormal forming) , also   ...
Signs and Symptoms   Delayed closure (ossification) of the space between    the bones of the skull (fontanels)   Prematu...
Dental Correlation     Dental abnormalities seen in cleidocranial     dysplasia may include:    Delayed loss of the prim...
Dental Correlation   Due to the fact that the dental problems are the most    significant complications, appropriate dent...
Classification     Single gene/Mendelian Inheritance:    The    disorder is transmitted in an      autosomal dominant ma...
9. dela cruz   cleidocranial dysplasia
9. dela cruz   cleidocranial dysplasia
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9. dela cruz cleidocranial dysplasia

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9. dela cruz cleidocranial dysplasia

  1. 1. Cleidocranial Dysplasia Presented by: Dela Cruz, Beatrice, D. DMD2D
  2. 2. Definition  Cleidocranial Dysplasia (cleido = collar bone, + cranial = head, + dysplasia = abnormal forming) , also known as Cleidocranial Dysostosis and Marie- Sainton Disease, is a condition characterized by defective development of the cranial bones and by the complete or partial absence of the collar bones (clavicles).  It is also characterized by late ossification of cranial sutures and delayed tooth eruption.
  3. 3. Signs and Symptoms  Delayed closure (ossification) of the space between the bones of the skull (fontanels)  Premature closing of the coronal suture  Protruding jaw and protruding brow bone (frontal bossing)  Hypertelorism – wide nasal bridge due to increased space between the eyes  High arched palate or possible cleft palate  Short stature  Scoliosis of the spine  Osteopenia - decreased bone density
  4. 4. Dental Correlation  Dental abnormalities seen in cleidocranial dysplasia may include: Delayed loss of the primary teeth Delayed appearance of the secondary teeth  Unusually shaped, peg-like teeth Misalignment of the teeth and jaws (malocclusion) Supernumerary teeth, sometimes accompanied by cysts in the gums.
  5. 5. Dental Correlation  Due to the fact that the dental problems are the most significant complications, appropriate dental/orthodontic work is vital. Some of the suggested treatment options include the following:  Apply dentures over the unerupted teeth  Teeth removal as they erupt, because very little bone structure would be left if the supernumerary, impacted, and unerupted teeth were all extracted at once  Some doctors suggest that the removal of primary or supernumerary teeth does not promote eruption of unerupted permanent teeth. In addition, permanent teeth may be difficult to extract due to malformed roots.  Speech therapy may be required during periods of dental treatment.
  6. 6. Classification  Single gene/Mendelian Inheritance: The disorder is transmitted in an autosomal dominant manner. A parent with the condition has a 50:50 chance that each of their children will have the condition. Boys and girls stand an equal chance of being affected.  Cytogenic location - CCD is caused by mutation in the RunX2 gene on chromosome 6p21.
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