Year: 2012

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Case of the Week: Invasive cervical resorption

This week I am showing a case of a specific kind of external resorption (invasive cervical resorption).  This form of resorption occurs in the cervical region of a tooth.  There have been many different causes for this resorption suggested such as trauma, orthodontic movement, intracoronal bleaching, periodontal root scaling, etc. …
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X is for x ray: Image Density

Today is all about image density and how different settings on the x ray unit as well as the subject being imaged will effect this.  The four topics I will be covering are: milliampere (mA), kilovoltage peak (kVp), exposure time, and subject thickness.  I have covered some of these topics…
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Case of the Week: Supernumerary teeth and Impaction

This week I have a case of 2 for 1 (two findings on one radiograph). 😀 The first is the impaction of the mandibular molars.  If you look at the patients left, you’ll see the crowns of the two molars appearing as if they are in occlusion in the mandible. …
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X is for x ray: Image sharpness

Today I’m onto image sharpness.  There are three different characteristics we will be looking at; target size, film composition and patient movement. Target size The target size is just that, the target size in an x ray unit.  This is fixed by the manufacturer and cannot be changed by the…
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Case of the Week: Dens invaginatus with clinical photo

This week I have a case of dens invaginatus.  I have shown a case of dens invaginatus before but this time I have a clinical photo to show the infolding of the enamel.  This case is involving a mandibular premolar.  The radiograph shows a radiopaque inverted triangle with a radiolucent…