Hertwig’s Rooth Sheath
Write briefly about Hertwig’s root sheath.
Answer:
Hertwig’s root sheath:
- Epithelial cells of the inner and outer dental epithelium proliferate from the cervical loop of the enamel organ to form a double layer of cells known as Hertwig’s epithelial root sheath
- It consists of only inner and outer enamel epithelium excluding stratum intermediate and stellate reticulum.
- It establishes the future dentioccmental junction.
- This sheath of epithelial cells extends around the denial pulp between it anil the dental follicle.
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- The aim of this root sheath, the epithelial diaphragm, encloses the primary apical foramen.
- As the inner epithelial cells of the root sheath progressively enclose more and more expanding dental pulp, they initiate the differentiation of odontoblasts and eventually form the dentin of the root.
- The cells of the inner layer remain short and normally do not produce enamel.
- The proliferation of the cells of the diaphragm is accompanied by a proliferation of the cells of the connective tissue of the pulp.
- The free end of the diaphragm does not grow into the connective tissue but proliferates coronal to the epithelial diaphragm.
“Understanding Hertwig’s Epithelial Root Sheath through FAQs: Composition, functions, and uses explained”
Fate:
- If Hertwig’s epithelial root sheath is lost prior to the cementum formation, accessory canals are formed.
- If it persists, it leads to the formation of epithelial pearls or enamel pearls
- After the epithelial rest cells form the dentin of the root, it loses its structural continuity and its close relation to the surface of the root.
- Its remnants are found in the periodontal ligament of erupted teeth and are called the rest of molasses.
“Importance of studying Hertwig’s Epithelial Root Sheath for dental students: Questions explained”
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