Basic Guide to Dental Radiography by Tim Reynolds

By Tim Reynolds

Basic consultant to Dental Radiography offers a necessary creation to radiography within the dental perform. Illustrated all through, this consultant outlines and explains every one subject in a transparent and available style.

  • Comprehensive insurance comprises normal physics, ideas of picture formation, electronic photo recording, apparatus, organic results of x-rays and legislation
  • Suitable for the complete dental team 
  • Illustrated in complete color throughout 
  • Ideal for these finishing needed CPD in radiography 
  • Useful research consultant for the NEBDN certificates in Dental Radiography, the nationwide certificates in Radiography or the extent three degree in Dental Nursing

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The arrows indicate the force of attraction exerted by the nucleus on the orbiting electrons. The binding energy tells us how much energy we would need to remove an electron from its shell and from the atom (how much work would we need to do). The concentration of positive charge in the nucleus exerts force of attraction on the electrons. If an electron lies in the K shell, this force is very strong because the electron is close to the positive charge. When we move the electron to the L shell, it is much further from the positive charge of the protons, and the force of attraction between them is much lower.

Radio waves are low‐energy radiation, light somewhere in the middle and X‐rays towards the top of the total range of energies. They all share the same general physical properties: they are electromagnetic radiations, and they all therefore have both an electric element and a magnetic element. The two elements (electric and magnetic) have a wave nature similar to the one we used to show alternating voltage and current, that is, a sinusoidal waveform. 14). A feature of electricity that we did not discuss previously is that if you have an electric current flowing in a conductor, there will also be a magnetic field.

If an image is grossly overexposed (or over developed), it could become totally black with no diagnostic information. We have already seen how the tissue factors (atomic number, thickness and density) will affect the image, and we also need to consider how the exposure factors will affect what we see. The two main factors of exposure to consider are tube current (mA) and the kV. Tube current or mA is what we have been calling filament electrons. We did this to make a clear distinction between them and the electrons in the target material.

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