Landmarks of Mandible
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Landmarks of Mandible - Dental Radiology - Lecture Slides, Slides of Dental Radiology
Landmarks of Mandible, Mandibular Incisor, Mandibular Canine, Mandibular Premolar, Mylohyoid Ridge, Submandibular Gland Fossa, Mental Foramen, External Oblique Ridge are some points form this lecture of Dental Radiology.
Typology: Slides
2011/2012
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Landmarks of Mandible
Mandibular Incisor
Mental ridge
Genial tubercles Lingual foramen
Mental fossa
Lingual foramen. Radiolucent “hole” in center of genial tubercles. Lingual nutrient vessels pass through this foramen.
lingual view
Genial tubercles. Radiopaque area in the midline, midway between the inferior border of the mandible and the apices of the incisors. Note double rooted canine (red arrows).
lingual view
Mental fossa. This represents a depression on the labial aspect of the mandible overlying the roots of the incisors. The resulting radiolucency may be mistaken for pathology.
facial view
The radiolucent area above corresponds to the location of the mental fossa. However, this slide represents chronic periapical periodontitis; these teeth are non-vital, due to trauma.
The orange arrows above identify nutrient canals. They are most often seen in older persons with thin bone, and in those with high blood pressure or advanced periodontitis.
b 2
a = mental ridge c = mental foramen (^) b 2 = lingual foramen
b 1 = genial tubercles
facial view lingual view
dc
da
db 1
db 2
Mental ridge. The raised portions of the mental protuberance, sloping downward and backward from the midline.
facial view
The red arrows identify the mandibular canal; the blue arrow points to the mental foramen; the green arrows identify the cortical bone at the lower border of the mandible.
facial view
Mandibular Premolar
Mylohyoid ridge
Mandibular canal
Mental foramen
Submandibular gland fossa
Mylohyoid (internal oblique) ridge. This radiopaque ridge is the attachment for the mylohyoid muscle. The ridge runs downward and forward from the third molar region to the area of the premolars.
lingual view
facial view
Mandibular canal. (Inferior alveolar canal). Runs downward from the mandibular foramen to the mental foramen, passing close to the roots of the molars. More easily seen in the molar periapical.
Mental foramen. Usually located midway between the upper and lower borders of the body of the mandible, in the area of the premolars. May mimic pathology if superimposed over the apex of one of the premolars.
facial view
Mandibular Molar
External oblique ridge
Submandibular gland fossa
Mandibular canal
Mylohyoid ridge (internal oblique)