ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Impacted wisdom tooth. X-ray of an 18 year old's jaw showing an impacted wisdom tooth (bottom left of the jaw). It is pushing against the root of the adjacent tooth and could push it out of alignment. Another wisdom tooth (top left of the jaw) is also misaligned, but is growing away from the adjacent tooth. The wisdom teeth are the third set of molars and usually appear in the late teens and early twenties. Impacted teeth may need to be surgically extracted.
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