口腔颌面医学影像诊断学（中山大学）1.3口内投照正常影像.pptVIP

lingual view Submandibular gland fossa. The depression below the mylohyoid ridge where the submandibular gland is located. More obvious in the molar periapical film. 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) a b c d d a = external oblique ridge b = mylohyoid ridge c = mandibular canal d = submandibular gland fossa The external oblique ridge (red arrows) and the mylohyoid ridge (blue arrows) usually run parallel with each other, with the external oblique ridge always being higher on the film. Identify the anatomical structures on the following eight slides. Enter answers on the accompanying answer sheet. Slide # 1 The red arrows identify the ? the floor of the nasal fossa Slide # 2 A. The red arrow points to the ?conoroid process B. The white arrows identify the ?maxillary tubersity C. The blue arrow points to the ?sinus septum D. The yellow arrow identifies the ?zygomatic process Slide # 3 The small radioluceny identified by the green arrow is the ? Lingual foramen Slide # 4 The radiopacity identified by the blue arrows is the ?internal oblique line/mylohyoid ridge B. The orange arrow identifies the ? Mandibular canal/inferior nerve canal Slide # 5 The yellow arrows point to the ?zygomatic process The red arrows identify the ?maxillary sinus Slide # 6 The red arrow points to the ?inferior concha The orange arrow points to the ?nosal septum The blue arrows point to the radiolucent line known as the ?median palatine suture Slide # 7 The red arrows point to the ? Mental ridge Slide # 8 The red arrows identify the ?mandibular canal What is the name of the radiolucent area surrounding the canal?submandibular gland fossa The End *