Below is a series of 3 sequential x-rays of the same patient. Note the ectopic unerupted 35 that is erupting distally on the initial OPG Jan 2015. It eventually erupts and contacts the mesial aspect of the 36 root (Nov 2015), then stops moving(compared with July 2016).
We referred him to an oral surgeon recently for an orthodontic exposure of 35, whom only had the last two x-rays, without the first panorex x-ray, and concluded that 35 was ankylosed. In our experience it is rare to see a tooth whose root is still developing be ankylosed.
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