March 2012 – Dr. G's Toothpix

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Case of the week

Case of the Week: Rarefying osteitis (abscess, cyst and/or granuloma)

This week I am going to show several examples of rarefying osteitis (sometimes referred to as apical rarefying osteitis when positioned at the apex). Rarefying osteitis is a term that means ‘loss of bone due to inflammation’. I use this term when describing a radiolucent area at the apex of…

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X is for x ray: Inverse square law and PID/cone length

This is the last week of post topics from the review for the hygiene written boards. Today is the inverse square law and how this applies to changing the PID/cone length and exposure settings for a comparable image density. Inverse square law The inverse square law applies to any source…

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Case of the week

Case of the Week: Ceramic crowns

This week I am showing a dental material that seems to confuse many new students in the clinic. So here are some examples of ceramic crowns. The radiopaque line seen around the prep is the cement. (I realize this isn’t as exciting or interesting as some of my other cases,…

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X is for x ray: Image distortion

Today is image distortion. There is really only one characteristics (actually an artifact) we will be looking at; bending. (Note to those who use wired sensors, it is not possible to bend the sensor without breaking it 🙂 so this will not apply to you). Bending Bending occurs when the…

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Case of the week

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. …