Presentation on theme: "Normal Anatomy: Panoramic Images"— Presentation transcript:
1 Normal Anatomy: Panoramic Images Chapter 29Normal Anatomy: Panoramic Images
2 Dental Radiography Questions What are normal anatomic features of panoramic images?What bony landmarks of the maxilla and mandible and surrounding structures may be seen on panoramic images?What soft tissue images may be seen on panoramic images?
4 Dental Radiography Chapter 29 Outline Normal Anatomy: Panoramic Images Normal anatomic landmarksAir spaces seen on panoramic imagesSoft tissues seen on panoramic images
5 Introduction Purpose Iannucci & Howerton (pp. 357-358) To review the normal anatomy of the maxilla and mandible as viewed on a panoramic imageTo examine air space images and soft tissue images
6 Normal Anatomic Landmarks Iannucci & Howerton (p. 358)Bony Landmarks of Maxilla and Surrounding StructuresBony Landmarks of Mandible and Surrounding StructuresAir Spaces Seen on Panoramic ImagesSoft Tissues Seen on Panoramic Images
7 Bony Landmarks of the Maxilla and Surrounding Structures Iannucci & Howerton (p. 358) (Fig. 29-1)Mastoid processStyloid processExternal auditory meatusGlenoid fossaArticular eminenceLateral pterygoid platePterygomaxillary fissureMaxillary tuberosityInfraorbital foramenOrbitWhere are these structures located?What do they look like on a panoramic image?
8 Bony Landmarks of Maxilla and Surrounding Structures Iannucci & Howerton (pp ) (Figs through 29-4)Incisive canalIncisive foramenAnterior nasal spineNasal cavityNasal septumHard palateMaxillary sinus and floor of the maxillary sinusZygomatic process of the maxillaZygomaHamulusWhere are these structures located on a panoramic image?What do they look like?
9 Bony Landmarks of Mandible and Surrounding Structures Iannucci & Howerton (pp ) (Fig. 29-5)Mandibular condyleCoronoid notchCoronoid processMandibular foramenLingulaMandibular canalMental foramenMental ridgeUse a copy of Fig to show students where these landmarks are located.
10 Bony Landmarks of Mandible and Surrounding Structures Iannucci & Howerton (pp ) (Figs through 29-8)Mental fossaLingual foramenGenial tuberclesInferior border of the mandibleMylohyoid ridgeInternal oblique ridgeExternal oblique ridgeAngle of the mandibleWhere are these landmarks located?What do they look like on a panoramic image?
11 Air Spaces Seen on Panoramic Images Iannucci & Howerton (pp. 363, 365) (Figs. 29-9, 29-10)Palatoglossal air spaceNasopharyngeal air spaceGlossopharyngeal air spaceThe palatoglossal air space refers to the space found between the palate and tongue.The nasopharyngeal air space refers to the portion of the throat located posterior to the nasal cavity.The glossopharyngeal air space refers to the portion of the pharynx located posterior to the tongue and oral cavity.
12 Soft Tissues Seen on Panoramic Images Iannucci & Howerton (pp ) (Figs , 29-12)TongueSoft palate and uvulaLiplineEarThe tongue appears as a radiopaque area superimposed over the maxillary posterior teeth.The soft palate and uvula form a muscular curtain that separates the oral cavity form the nasal cavity, and appear as a diagonal radiopacity projecting posteriorly and inferiorly from the maxillary tuberosity region.The lipline is formed by the position of the patient’s lips.The ear appears as a radiopaque shadow that projects anteriorly and inferiorly from the mastoid process.