Recognition of the AL on CT scans (100%) is higher compared with data in literature for detection on panoramic radiographs (38.2%). To avoid complications, it is important to detect the AL presence and its mesial extension from the mental foramen. Safety distance of at least 2 mm from the mesial extend of the AL is recommended. Therefore, 3D imaging techniques are advised for loops which courses are not clearly identifiable on panoramic radiographs.
To determine the altered location of the medial lingual nutritional foramina in different stages of bone resorption, 55 cadaveric mandibles were selected for this study from a total of 1532. Prevalence, location of the foramen (lingual, cranial, labial), application of Atwood classification (grades 1-6), and macroanatomic dissections were tools of this examination. An increasing grade of atrophy leads to a shift in position of the medial lingual nutritional foramen.
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