DENTAL ANOMALIES

 

 

DENTAL ANOMALIES 

v  Dens in dente

Ø  Occurs when enamel becomes invaginated

Ø  Most commonly found in permanent lateral and central incisors

Ø  Known for giving endo like symptoms, but no decay on crown, etc.

Ø  Retarded growth of a portion of a single tooth germ, or the proliferation of a segment of the odontogenic epithelium in the dental papilla

v  Mesiodens

Ø  Supernumerary teeth arising in the midline of the maxillae (most common supernumerary)

Ø  A small, calcified radiopaque mass between the roots of #8 & #9 is most likely due a mesiodens

Ø  Tooth appears mesial to both Mx central incisors

v  Concrescence

Ø  The cemental union of two fully formed teeth that were originally separate entities

Ø  Can be mistaken for Subgingival calculus

v  Fusion

Ø  Union of 2 adjacent tooth buds

Ø  More common in anterior and deciduous teeth. Usually just the crowns, but can involve roots.

Ø  Upon examination, the dentist notices that there is an abnormally wide Mn incisor; further examination reveals that there are only 3 Mn incisors present; most likely due to fusion

v  Gemination

Ø  Incomplete splitting of a single tooth germ

Ø  A pt has an extremely wide, notched tooth in the Mn incisor position; clinical & radiographic exam reveals 28 teeth have erupted (4 M3s unerupted); most likely due to gemination