Author: Dr. Shawneen Gonzalez

DDS, MS, Diplomate ABOMR
1 min read 4

Case of the week: Developing Distodens (supernumerary teeth)

This week is a neat case showing two distodens developing in the mandible.  Distodens are supernumerary teeth found in the molar region. Note distal to the mandibular left (developing) third molar is another follicle with the enamel evident.  On the patients right side, only the follicle is evident.  No calcified…
2 min read 1

Attenuation: Coherent Scatter

This post is the first of three involving methods of attenuation.  The first two posts will be on types of scatter; coherent scatter and compton scatter.  The last post will be on absorption; photoelectric effect.  These are physics topics and more likely apply to students as they are learning about…
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Case of the week: Internal Resorption on CBCT

This weeks case is a severe example of internal resorption as seen on cone beam CT.  Internal resorption presents as enlargement of the pulp chamber and/or root canal space. Reconstructed pantomograph (Metal in left  anterior mandible is due to previous reconstruction and mandibular fracture) Cross-sectional view (Note enlarged root canal…
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All about attenuation of x rays

Attenuation is when the quantity of x rays is reduced by either absorption or scatter as it travels through matter.   Absorption is when x ray photons ionize atoms and transfer its energy to electrons (i.e. photoelectric effect).  Scattering is when the x ray photons are ejected out of the primary…
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Case of the week: Third Molar in Maxillary Sinus

This weeks case topic is an interesting finding of a maxillary third molar developing in the maxillary sinus adjacent to a supernumerary tooth on a CBCT scan.  Interpretation: This case shows a mixed radiolucent/radiopaque entity in the right maxillary sinus.  The radiopacity is that of tooth structure.  The appearance is…