What is the function of SHH in tooth development?

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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 is the function of SHH in tooth development?

Explanation:
Sonic Hedgehog acts as a key morphogen guiding tooth formation. In the developing tooth, SHH is produced by the enamel knot, a temporary signaling center, and it promotes growth and proliferation in the surrounding dental epithelium and mesenchyme. This coordinated growth sets the size of the tooth germ and directs where cusps will form, shaping the overall crown pattern. SHH doesn’t work in isolation; it interacts with BMP and WNT signaling to fine-tune cusp patterning and morphogenesis, helping determine cusp number and arrangement. It’s not primarily about eruption or enamel mineralization, and it certainly has a significant role in tooth development.

Sonic Hedgehog acts as a key morphogen guiding tooth formation. In the developing tooth, SHH is produced by the enamel knot, a temporary signaling center, and it promotes growth and proliferation in the surrounding dental epithelium and mesenchyme. This coordinated growth sets the size of the tooth germ and directs where cusps will form, shaping the overall crown pattern. SHH doesn’t work in isolation; it interacts with BMP and WNT signaling to fine-tune cusp patterning and morphogenesis, helping determine cusp number and arrangement. It’s not primarily about eruption or enamel mineralization, and it certainly has a significant role in tooth development.

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