#### 22 Application of subdivision 22 Application of subdivision > The exemptions under this subdivision apply only to the use of the following ionising radiation apparatus for dental diagnostic purposes— > > > (a) extra-oral x-ray apparatus when used with intra-oral image receptors, > > > (b) orthopantomogram x-ray apparatus when used to take an orthopantomogram x-ray, > > > (c) lateral cephalometric x-ray apparatus when used to take a lateral cephalometric x-ray.

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