1. Microdontia

2. General information
• Refers to teeth that are smaller than normal
• Transmitted as an autosomal dominant with
incomplete penetrance

3. Types
• True generalised–All the teeth are smaller than
normal. It occurs in pituitary dwarfism, Downs
syndrome and congenital heart disease.
• Related generalised – normal or slightly smaller
than normal teeth. It is hereditary. spacing
between the teeth
• Localised – involves only single tooth. Congenital
heart diseases, Downs syndrome and progeria

4. Clinical features
• Affected teeth are maxillary lateral incisors
and third molars
• Peg shaped lateral in which the mesial and
distal sides converges or Taper incisally.

5. Radiographic features
• Radiographs will permit evaluation of size of
both erupted and non-erupted teeth

6. Diagnosis
• Looking at the size of tooth clinically can be
easily made

7. Management
• Crown and bridge work is required for
aesthetic rehabilitation of teeth