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| **Seen mostly in rodents - [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] may even penetrate through [[Lips - Anatomy & Physiology|lip]]. | | **Seen mostly in rodents - [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] may even penetrate through [[Lips - Anatomy & Physiology|lip]]. |
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− | ==Defence Mechanisms==
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− | ==Developmental Pathology==
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− | ===[[Erythropoietic Porphyra]].===
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− | ===[[Photosensitisation]]===
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− | ===[[Abnormal Wear of Teeth]]===
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− | ===[[Abnormal Numbers of Teeth]]===
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− | ==Infection of teeth==
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− | ===[[Alveolar Periostitis]]===
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− | ==Granulomatous and pyogranulomatous Inflammation==
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− | ===[[Mandibular Osteomyelitis]]===
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− | ===[[Odontoclastic resorptive lesions]]===
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− | ==Eosinophilic Inflammation==
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− | ==Necrotizing Inflammation==
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− | ==Lymphocytic and plasmacytic Inflammation==
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| ==Proliferative Pathology== | | ==Proliferative Pathology== |
| ===Hyperplastic=== | | ===Hyperplastic=== |
− | ====Focal fibrous hyperplasia<ref name="epulides1"> </ref>==== | + | ====[[Focal fibrous hyperplasia]]==== |
− | *44% of cases.
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− | *Dense collagenous tissue, with ulceration/superficial inflammation
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− | *Dystrophic calcificaition within the fibrous connective tissue stroma (often highly cellular, with 'young stellate fibroblasts'
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− | *No odontogenic epithelium seen.
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− | *Occasional strands of surface epithelium growing down into the stroma.
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− | *Most of these were previously diagnosed as fibromatous or ossifying epulides.
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| ===Neoplastic=== | | ===Neoplastic=== |
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| *The stroma contains neoplastic fibroblasts, with varying cellularity. | | *The stroma contains neoplastic fibroblasts, with varying cellularity. |
| *The overlying epitheluim is normal. | | *The overlying epitheluim is normal. |
| + | <small> |
| + | With thanks to Andrew Jefferies (Cambridge) and Alun Williams (RVC) for providing access to their lecture materials |
| + | </small> |
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| ====Peripheral ameloblastoma<ref name="epulides1"> </ref>==== | | ====Peripheral ameloblastoma<ref name="epulides1"> </ref>==== |
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| *Often infiiltrating into the underlying bone. | | *Often infiiltrating into the underlying bone. |
| *Synonymous with basal cell carcinoma. | | *Synonymous with basal cell carcinoma. |
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| + | <small> |
| + | With thanks to Andrew Jefferies (Cambridge) and Alun Williams (RVC) for providing access to their lecture materials |
| + | </small> |
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| ====Central ameloblastoma<ref name="epulides1"> </ref>==== | | ====Central ameloblastoma<ref name="epulides1"> </ref>==== |
| *Different from peripheral ameloblastoma - cystic changes and follicular arrangement of ameloblasts and stellate reticulum cells, resembling the basic structure of the [[Tooth Anatomy - Anatomy & Physiology|enamel organ]]. | | *Different from peripheral ameloblastoma - cystic changes and follicular arrangement of ameloblasts and stellate reticulum cells, resembling the basic structure of the [[Tooth Anatomy - Anatomy & Physiology|enamel organ]]. |
| + | <small> |
| + | With thanks to Andrew Jefferies (Cambridge) and Alun Williams (RVC) for providing access to their lecture materials |
| + | </small> |
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| ==Degenerative Pathology== | | ==Degenerative Pathology== |
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| ==Vascular Pathology== | | ==Vascular Pathology== |
| ==References== | | ==References== |
− | <small>
| + | |
− | With thanks to Andrew Jefferies (Cambridge) and Alun Williams (RVC) for providing access to their lecture materials
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− | <references/>
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− | </small>
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| ==Learning Tools== | | ==Learning Tools== |
| [[Alimentary Flashcards - Pathology#Teeth Flashcards|Teeth Flashcards]] | | [[Alimentary Flashcards - Pathology#Teeth Flashcards|Teeth Flashcards]] |
| [[Category:Oral_Cavity_and_Gingiva_-_Pathology]] | | [[Category:Oral_Cavity_and_Gingiva_-_Pathology]] |