Which stage involves crown formation beginning and root formation beginning later with Hertwig's epithelial root sheath (HERS)?

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Get ready for the Tooth Development and Shedding Test. Utilize flashcards and multiple-choice questions with hints and explanations. Enhance your preparation and ace the exam effortlessly!

Multiple Choice

Which stage involves crown formation beginning and root formation beginning later with Hertwig's epithelial root sheath (HERS)?

Explanation:
Bell stage is when the enamel organ takes on a bell shape and crown formation begins. The root starts to form later, under the influence of Hertwig's epithelial root sheath (HERS), which forms at the boundary between crown and root and directs root dentin formation by signaling the dental papilla to produce root dentin. So crown formation begins during this stage, with root formation following later as HERS guides it. Earlier stages like initiation (bud) and cap occur before crown formation, while the transition to root development happens with the appearance of HERS.

Bell stage is when the enamel organ takes on a bell shape and crown formation begins. The root starts to form later, under the influence of Hertwig's epithelial root sheath (HERS), which forms at the boundary between crown and root and directs root dentin formation by signaling the dental papilla to produce root dentin. So crown formation begins during this stage, with root formation following later as HERS guides it. Earlier stages like initiation (bud) and cap occur before crown formation, while the transition to root development happens with the appearance of HERS.

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