1: Median diastema

1 Median diastema


Intraoral examination

Soft tissues are healthy and the dentition is caries-free. The intraoral views are shown in Figures 1.1 and 1.2.

image What are the possible causes of the upper median diastema?

These are listed in Table 1.1.

Table 1.1 Causes of an upper median diastema

Causes Comments
Developmental Due to pressure of image on image roots (formerly referred to as ‘ugly duckling’ stage); tends to resolve by the time image erupt
Dentoalveolar disproportion Small teeth in a large arch
Absent or peg-shaped 2’s  
Supernumerary tooth/teeth in midline  
Proclination of image May be due to digit sucking habit
Prominent labial frenum Implicated where there is blanching of the incisive papilla on stretching the frenum and notching between image is seen in radiograph
Pathological Cyst/tumour
  Juvenile periodontitis

Jan 2, 2015 | Posted by in Orthodontics | Comments Off on 1: Median diastema
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