A. Dental Cyst
B. Eruption Cyst
C. Nasolabial Cyst
D. Dentigerous Cyst
Ans:A. Dental Cyst.
Image shows:Dental (Radicular) cyst. The cyst wall is composed of fibrous tissue and is lined by non-keratinised squamous epithelium. The cyst wall is densely infiltrated by chronic inflammatory cells, chiefly lymphocytes, plasma cells and macrophages.
Radicular Cyst(Dental Cyst)
- Radicular cyst, also called as apical, periodontal or simply dental cyst, is the most common cyst originating from the dental tissues.
- It arises consequent to inflammation following destruction of dental pulp such as in dental caries, pulpitis, and apical granuloma.
- The epithelial cells of Mallasez, which are nests of odontogenic epithelium embedded in the periodontium, proliferate within apical granuloma under the influence of inflammation, leading to the formation of an
- epithelium-lined cystic cavity.
- Most often, radicular cyst is observed at the apex of an erupted tooth and sometimes contains thick pultaceous material.
- Histologically, the radicular cyst is lined by nonkeratinised squamous epithelium.
- Epithelial rete processes may penetrate the underlying connective tissues.
- Radicular cyst of the maxilla may be lined by respiratory epithelium.
- The cyst wall is fibrous and contains chronic inflammatory cells (lymphocytes, plasma cells with Russell bodies and macrophages) hyaline bodies and deposits of cholesterol crystals which may be associated with foreign body giant cells