There are 3 types of<unk> : True generalized All the teeth are smaller than the normal size. True generalized<unk>  is very rare, and occurs in pituitary dwarfism. Due to decreased levels of growth hormone the teeth fail to develop to a normal size. Relative generalized All the teeth are normal size but appear smaller relative to enlarged jaws. Relative generalized<unk>  may be the result of inheritance of a large jaw from one parent, and normal sized teeth from the other. Localized (focal)=== Localized<unk>  is also termed focal, or pseudo-microdontia. A single tooth is smaller than normal. Localized<unk>  is far more common than generalized<unk> , and is often associated with hypodontia (reduced number of teeth). The most commonly involved tooth in localized<unk>  is the maxillary lateral incisor, which may also be shaped like an inverted cone (a "peg lateral"). Peg laterals typically occur on both sides, and have short roots. Inheritance may be involved, and the frequency of<unk>  in the upper laterals is just under 1%. The second most commonly involved tooth is the maxillary third molars, and after this supernumerary teeth.
Microdontia
Microcoria
Macrostomia
Macrotia
Micromastia
Brachyphalangy
Iniencephaly
Macrocephaly