Anomaly of the vestibulum oris, diastema, tremata

Anomaly of the vestibulum oris

 * Shallow vestibulum
 * 1) Primary shallow vestibulum - congenital
 * 2) Secondary shallow vestibulum - due to gingival recession


 * Anomaly in attachement of labial frenulum
 * 1) Gingival attachment
 * 2) Papillary attachment

Diastema
Space between the two central incisors

Tremata

 * Single space --> trema
 * Many spaces --> tremata (spacing)