Monthly Archives: November 2012


Case of the week: Double Lingual Foramina 4

This weeks case is an interesting variant of normal anatomy – two lingual foramina seen on a periapical radiograph.  Some patients can have up to three lingual foramina. Note the two well-defined, circular radiolucent entities inferior to the mandibular central incisors.  The superior one is larger than the inferior one. […]


Radiographic Quality Evaluation: Bad Pantomographs (Part 1) 1

This week will be covering the first 2 criteria for an ideal pantomograph and what happens to the final image when they are not met. 1. Patient has anterior teeth in notches on bite block. Error: Patient positioned too far anteriorly or posteriorly in the unit creating minification (too far […]


SLOB rule (Same-Lingual, Opposite-Buccal) horizontal angle change practice 2

This week is using the SLOB rule or image shift to determine the location of an object with changes in horizontal angles. Answers from last week Example 1 – diamond object is located to the buccal Example 2 – lightning bolt object is located to the buccal Example 1 Example […]


Case of the week: Chronic Apical Periodontitis 4

This week is a follow up to last week with a case of chronic apical periodontitis.  The primary difference of chronic apical periodontitis versus acute apical periodontitis is the presence of sclerotic bone formation.  This sclerotic bone formation (sometimes referred to as sclerosing osteitis) may present in one of three […]


Radiographic Quality Evaluation: Ideal Pantomograph 4

This week I am showing an example of an ideal pantomograph along with 6 criteria that are used when determining the quality of a pantomograph.  The next couple weeks will be showing examples of when those 6 criteria are not met and how to correct them. 1. Patient has anterior […]