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10 Cards in this Set
- Front
- Back
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1. What is anodontia?
What characterizes total anodontia? |
Total congenital absence of a set of teeth
Absence of entire primary and secondary dentitions and is extremely rare |
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2. In which arch do supernumerary teeth usually form?
What are mesiodens? What are distomolars, paramolars, or fourth molars? |
Maxilla
Small supernumeray tooth that forms between central incisors Supernumeray teeth distal to the 3rd molars (more common in maxillary arch) |
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3. Where is the most common location for supernumerary teeth in the mandibular arch?
What are mulberry molars? |
Second premolar region
First molars that have occlusal anatomy made up of multiple tiny tubercles w/ poorly developed indistinguishable cusps |
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4. What is a tuberculum intermedium?
What is a tuberculum sextum? |
Third L cusp on mandibular molars on lingual surface
Extra cusp on mandibular molars located on the distal marginal ridge |
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5. What is taurodontia?
What is a talon cusp? |
Bull or prism teeth where pulp chamber is very long w/o a constriction near the CEJ (occurs only in permanent teeth)
Small enamel projection in the cingulum area of maxillary and mandibular anterior permanent teeth |
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6. What is a shovel shaped incisor?
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Pronounced cingulum and marginal ridges thus the scoop or "shovel" appearance
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7. What is the difference between unerupted and impacted teeth?
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Unerupted fail to erupt b/c of lack of eruptive forces
Impacted fail to erupt die to mechanical obstruction |
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8. Which teeth can be transposed?
Which teeth may experience tooth rotation? |
Maxillary canines to the central incisor region
Maxillary second premolar, sometimes maxillary incisor, first premolar, or mandibular second premolar |
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9. What are ankylosed teeth?
What can initiate ankylosis? What causes erosion? |
Teeth that erupt into the oral cavity but fail to reach occlusion w/ the opposing arch
Infection or trauma to the PDL Loss of tooth structure from chemical (non-mechanical) means and affects smooth and occlusal surfaces |
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10. What is attrition?
What is bruxism? What causes abrasion? What is abfraction? |
Wearing away of enamel and dentin from the movement of the mandibular teeth against maxillary teeth during normal function
Excessive grinding or gritting together of teeth (makes attrition worse) Mechanical means (tooth brushing) Appears similar to attrition resulting from tooth bending (flexure) of the tooth cause by heavy occlusal forces |
