Odontoclasts are derived from which cell lineage?

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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

Odontoclasts are derived from which cell lineage?

Explanation:
Odontoclasts are resorptive cells that break down tooth tissues during root resorption and shedding of deciduous teeth. They come from the monocyte/macrophage branch of the hematopoietic system. Circulating monocytes migrate into dental tissues and fuse to form the multinucleated odontoclasts, much like osteoclasts in bone. This monocyte lineage explains why this is the correct source. Lymphoid lineage would yield lymphocytes, not resorptive cells; epithelial lineage forms enamel-producing or other epithelial-derived structures; mesenchymal lineage gives various connective tissue and tooth-forming cells but not the multinucleated resorptive cells.

Odontoclasts are resorptive cells that break down tooth tissues during root resorption and shedding of deciduous teeth. They come from the monocyte/macrophage branch of the hematopoietic system. Circulating monocytes migrate into dental tissues and fuse to form the multinucleated odontoclasts, much like osteoclasts in bone. This monocyte lineage explains why this is the correct source. Lymphoid lineage would yield lymphocytes, not resorptive cells; epithelial lineage forms enamel-producing or other epithelial-derived structures; mesenchymal lineage gives various connective tissue and tooth-forming cells but not the multinucleated resorptive cells.

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