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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Dent Clin North Am. 2015 Aug 6;59(4):859–872. doi: 10.1016/j.cden.2015.06.009

Figure 1.

Figure 1

Illustration of the paralleling technique. The film is placed so that its surface is parallel to the tooth axis, both of which are perpendicular to the x-ray beam.