Pathology · single question
What is the characteristic feature of the cyst capsule that forms from the epithelial rests of Malassez?
Show answer and explanation
Correct answer: D. A well-defined fibrous connective tissue capsule lined by stratified squamous epithelium
- A. Enamel is produced only before eruption by ameloblasts, which are gone by this stage; no enamel lining forms.
- B. The capsule is vascular and inflamed, and is permeable — osmotic fluid movement across it drives cyst expansion.
- C. Ameloblasts are absent — the rests of Malassez are root sheath remnants, not enamel organ epithelium.
- D. Correct. The epithelial rests of Malassez are remnants of Hertwig's epithelial root sheath in the periodontal ligament. When stimulated by periapical inflammation they proliferate to line a RADICULAR CYST — the most common odontogenic cyst. The wall is a well-defined FIBROUS connective tissue capsule, typically inflamed, lined by non-keratinized stratified squamous epithelium.