A member asked:

What makes the jaw and skull bigger/smaller? besides genetics

A doctor has provided 1 answer

2 things: genetics is the most important factor, but PEDS can potentially increase the head size. Also heavy clenching which directly affects the masseter muscles will indirectly increase bony simulation of the mandible at its insertion causing growth of the lower jaw.

Answered 8/24/2014

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Thank

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Small hard lump under skin on head/skull, what is this?

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