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Radiology
Chapter 23 Abnormalities
| Term | Definition |
|---|---|
| Ankylosis | Cementum is fused to the bone by the mineralization and hardening of the PDL fibers. |
| Anodontia | Missing teeth. Most common is 3rd, premolars, and maxillary laterals. |
| Sumpernumerary | Extra teeth. |
| Mesiodens | Extra tooth between 8&9. |
| Dens in Dente | Enamel invaginate within the tooth. |
| Hypercementosis | Enlargement of the cementum, usually at the apex of the tooth. |
| Gemination | When one developing tooth has split off into two distinct teeth that remain attached to each other and develop together. |
| Fusion | Where two developing teeth merge into one tooth. |
| Abscess | Chronic or acute located at the apex of the tooth usually. Appear radiolucent. |
| Exostosis | A boney growth projecting outward from the surface of a bone or tooth. Example: palatal and mandibular tori. |
| Cysts | a pathologic cavity lined by the epithelium that also has a fibrous capsule consisting of compressed connective tissue. |
| Dentigerous Cyst | Cyst derived from the enamel organ always associated with the crown. If the tooth completes and erupts the cyst is usually destroyed naturally. |
| Follicular Cyst | A cyst associated with enamel follicles. |
| Globulomaxillray Cyst | Arises between the maxillary lateral and canine. |
| Radicular Cyst | A cyst at the apex of a tooth with a distinct wall or capsule. Radiopaque line |
| Residual Cyst | Left over cystic tissue. |
| Incisive Canal Cyst | Originates in the incisive canal. |
| Condensing Osteitis | Describes the formation of compact sclerotic bone due to inflammation. |
| Taurodontia | Large pulp chamber short roots |
| Dentinogenesis Imperfecta | Small underdeveloped roots, no pulp chambers |
| Amelogenesis Imperfecta | Teeth with little or no enamel. |
| Are benign tumors cancerous? | No. |
| Examples of benign tumors? | Exostosis, osteoma, giant cell tumor or granuloma. |
| Odontoma Tumor? | A tumor of odontogenic origin in which enamel and dentin are formed. |
| Giant Cell Tumor | Radiolucent area of different sizes smooth borders usually anterior teeth. |
| Cementoma | A tumor derived from the PDL of a fully erupted tooth. Usually mandibular incisors. No treatment is necessary. |
| Sialolith Tumor | Calcified stone in the salivary gland. |
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Strobelight95
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