What structure attaches permanent teeth to the deciduous tooth germ by strands of fibrous connective tissue containing remnants of the dental lamina?

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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

What structure attaches permanent teeth to the deciduous tooth germ by strands of fibrous connective tissue containing remnants of the dental lamina?

Explanation:
During eruption, a strand of fibrous connective tissue that carries remnants of the dental lamina persists to connect a developing permanent tooth germ with the deciduous tooth germ. This structure, known as the gubernacular cord, guides the eruption by forming a path through the jaw—the gubernacular canal—so the permanent tooth can emerge as the deciduous tooth resorbs. The dental lamina itself seeds the tooth buds, not the connection between germs, and the periodontal ligament forms later to anchor a tooth to the bone after eruption.

During eruption, a strand of fibrous connective tissue that carries remnants of the dental lamina persists to connect a developing permanent tooth germ with the deciduous tooth germ. This structure, known as the gubernacular cord, guides the eruption by forming a path through the jaw—the gubernacular canal—so the permanent tooth can emerge as the deciduous tooth resorbs. The dental lamina itself seeds the tooth buds, not the connection between germs, and the periodontal ligament forms later to anchor a tooth to the bone after eruption.

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