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Oral radiology II

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Oral radiology II

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    1. Oral radiology II

    2. X-Ray Machine

    3. INTRAORAL X-RAY FILM Periapical View Bitewing View Occlusal View

    5. Periapical View

    6. Processing X-Ray Film Manual processing Rapid processing chemicals Automatic Film Processing

    7. MANUAL PROCESSING

    8. Developer – water - fixer

    9. Automatic Film Processing

    10. GENERAL STEPS FOR MAKING AN EXPOSURE Greet and seat the patient. Adjust the x-ray unit setting. position the tube head. Wash hands thoroughly. Examine the oral cavity. Position the film. position the x-ray tube. Make the exposure.

    11. Factors Affecting Quality of Image Factors affecting the image are related to: Machine Object Film Processing of film

    12. Periapical X-rays show the whole tooth -- from the crown to beyond the end of the root to where the tooth is anchored in the jaw. Each periapical X-ray shows this full tooth dimension and includes all the teeth in one portion of either the upper or lower jaw. Periapical X-rays are used to detect any abnormalities of the root structure and surrounding bone structure

    13. Two intraoral projection techniques are commonly used for periapical radiography: the paralleling technique and the bisecting-angle technique

    17. The vertical angulations

    18. Horizontal angulations

    19. Maxillary Incisors A - Nasal septum B - Inferior concha C - Nasal fossa D - Nasal spine E - Incisive foramen F – Nose G - Median palatine suture

    20. Incisive foramen

    21. Nasal septum

    22. Maxillary Canine A = Floor of nasal fossa B = Maxillary sinus C = Lateral fossa D = Nose

    23. a = floor of nasal fossa b = maxillary sinus c = lateral fossa a & b form inverted Y

    24. Maxillary Premolar A = Sinus recess B = Sinus septum C = Zygomatic Process D = Maxillary sinus

    25. a = Zygomatic Process b = sinus recess c = sinus septum d = maxillary sinus

    26. Maxillary Molar ??A- Zygoma B - Maxillary sinus C - Sinus recess D - Maxillary tuberosity E - Coronoid process F - Hamular Process G - Pterygoid plate

    27. a = maxillary tuberosity* b = coronoid process c = hamular process d = pterygoid plates e = zygoma (dotted lines) f = maxillary sinus g = sinus recess

    28. Mandibular Incisors A = Mental fossa B = Lingual foramen C = Genial tubercles D = Mental ridge

    29. Lingual foramen. Radiolucent “hole” in center of genial tubercles. Lingual nutrient vessels pass through this foramen

    30. Mandibular Canine A = Mental ridge B = Lingual foramen C = Genial tubercles D = Cortical bone E = Mental foramen

    31. Mandibular Premolar A = Mylohyoid ridge B = Submandibular gland fossa C = Mandibular canal D = Mental foramen

    33. Mandibular Molar A = External oblique ridge B = Mylohyoid ridge (internal oblique) C = Submandibular gland fossa D = Mandibular canal

    34. a = external oblique ridge b = mylohyoid ridge c = mandibular canal d = submandibular gland fossa

    35. Radiation Safety & Protection

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