Macrodontia is a condition in which any tooth or teeth appear larger than normal for that particular type of tooth. True macrodontia that involves the entire dentition is rare. It is more common that there is an enlargement of a single tooth due to a disturbance of morphodifferentiation. It should not be confused with either taurodontism

Taurodontism

Taurodontism is a condition found in molar teeth where the body of the tooth and pulp chamber is enlarged vertically at the expense of the roots. As a result, the floor of the pulp and the furcation of the tooth is moved apically down the root...

 (bull teeth), fusion

Tooth fusion

The phenomenon of tooth fusion arises through union of two normally separated tooth germs, and depending upon the stage of development of the teeth at the time of union, it may be either complete or incomplete. On some occasions, two independent pulp chambers and root canals can be seen. However,...

 (double tooth) or the jaws being relatively small, giving the appearance of macrodontia. It is commonly associated with gigantism

Gigantism

Gigantism, also known as giantism , is a condition characterized by excessive growth and height significantly above average...

.

Alternate terminology

Megadontia, megalodontia and giantism
it is an opposite side of microdontia
classified as true generalised macrodontia relative generalised macrodontia macrodontia of single teeth

Aetiology

Unknown for single tooth, but generalized macrodontia is usually attributed to a hormonal imbalance, pituirary giantism.
Can be associated with facial hemihyperplasia

Management

Stripping

Build up of antimere

Extraction and prosthetic replacement (implant, bridge, implant)