Supernumeraries

Question 1

Define supernumerary

Answer 1

A tooth or tooth like structure which develops in addition to then normal series of teeth

Question 2

What are the clinical features relating to supernumeraries?

Answer 2

• failure of tooth eruption
• diastema
• crowding
• displaced tooth
• root resorption of adjacent teeth
• prevent tooth movement
• cystic change Within follicle

Question 3

What are the 5 types of supernumerary?

Answer 3

1. Conical
2. Tuberculate
3. Supplemental teeth
4. Complex odontomes
5. Compound odontomes

Question 4

How can supernumeraries be managed?

Answer 4

1. Leave and monitor
2. Extraction and expose permanent tooth if impacted
3. Extraction - allow for orthodontics

Question 5

What are the causes of supernumeraries?

Answer 5

Genetics

Local factors - hyperactivity within lamina dura

Question 6

Which type of supernumerary most commonly prevents upper incisors eruption?

Answer 6

Tuberculate

Question 7

The presence of an upper mesiodens (conical supernumerary) can result in?

Answer 7

An upper midline diastema

Question 8

Where are supernumerary teeth most often found?

Answer 8

In the midline of the palate near the central incisors

Question 9

What are the issues with supernumeraries?

Answer 9

• tooth can be displaced from normal position
• tooth can fail to erupt
• root resorption to other teeth