Month: August 2011

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Radiographic Technique: Vertical Angle

What is vertical angle? Vertical angle refers to the position the Position Indicating Device (PID or cone) is along the coronal and/or sagittal planes.    A zero degree vertical angle is when the PID is positioned parallel with the axial plane.  A positive vertical angle is when the source of radiation…
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Case of the Week: Microdont

This week I have a case of a microdont.  Microdonts are fun to see on radiograph as it’s just a mini-tooth.  Microdonts are commonly associated with third molars and maxillary lateral incisors.  When a maxillary lateral incisor is a microdont it is frequently referred to as a peg lateral due…
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Radiographic Technique: Horizontal Angle

What is horizontal angle? Horizontal angle refers to the position the Position Indicating Device (PID or cone) is along the axial plane.    Horizontal angle can be increased or decreased.  A zero degree horizontal angle is when the PID is positioned parallel with the sagittal plane.  Increasing horizontal angle moves it towards…
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Case of the Week: Dens invaginatus

This week I have a case of dens invaginatus.  Dens invaginatus is an infolding of enamel from the incisal or occlusal surface of a tooth.  It is most commonly associated with maxillary lateral incisors but can be found on many other teeth in the oral cavity.  This case is a…
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Retaking radiographs: Are you in or are you out?

With a new school year about to start, we will have many new students entering the clinic with little experience making radiographs.  With this comes many retakes.  The one thing I will also be asked by the returning students is why some private offices (they were in rotations over the…