Microdontia

Microdontia develops while teeth are forming. It can occur with genetic or developmental conditions, and younger people treated with chemoradiotherapy may develop it after dental development is disrupted.

The pattern may involve a single small tooth or the whole dentition. True generalised microdontia means that all teeth are affected and is rare without an underlying genetic or developmental condition.

True generalised microdontia is associated with systemic syndromes such as pituitary dwarfism and certain orofaciodigital or oculomandibulofacial syndromes. It is also reported after childhood chemoradiotherapy.

A diagnosis starts with the tooth's size and form. When every tooth appears small, further assessment can help distinguish true generalised microdontia from conditions involving pituitary or growth-hormone defects. This pattern affects the entire dentition and is uncommon without an underlying condition.

Care is aimed at appearance or function. Small teeth with gaps between neighbouring teeth are commonly managed with orthodontic treatment; restorative, surgical, or orthodontic options may also be used when needed.

The type of care shapes the cost because management can involve orthodontic treatment, restorative work, surgery, or a combination of these approaches.

Microdontia can create aesthetic or functional concerns, especially when its severity or extent is greater. Its developmental origin does not necessarily affect dental function, and the associated syndrome may create the larger health concern.

Developmental or genetic microdontia cannot be prevented. Careful oral hygiene matters because affected teeth may need restorative, periodontal, or root-canal treatment when they are not well maintained.