3 min read 0

X is for x ray: Image magnification

I gave a lecture recently for the dental hygiene students reviewing for their dental hygiene written boards (NBDHE) and it gave me some ideas for topic posts. So for the next 4 posts I will be talking about x rays, image magnification, image distortion, PID length, etc.  The students told…
1 min read 2

Case of the Week: Vertical root fracture

This week I have a case of a vertical root fracture where there is no separation of the two segments.  This case shows a radiolucent area on the mesial aspect of the root and at the apex of the same root.  This is sometimes to referred to as a “J”…
4 min read 2

ROC curves in Dentistry

This week I’m focusing on ROC curves in dentistry and the different imaging modalities (primarily film versus digital).  As these numbers can change based on the research being performed and the reviewers of those radiographs, I thought the best way to break this all down is to give a short…
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Case of the Week: Transposition

Transposition is when two teeth switch locations (positions) in the arch.  Frequently this occurs with the maxillary canine and first premolar.  This case is an example of a mandibular canine switching locations (positions) with the lateral incisor.  The case is a little tricky to see at first, but look closely…
2 min read 2

ROC curves: What are they?

I am going to give a short introduction to ROC (Receiver Operating Characteristic) curves.  This term is frequently used in radiology research and I just wanted to give you a little information to know whether or not the ROC curve is significant or not. What is an ROC curve? An…