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Cone beam

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is a diagnostic imaging modality that provide high quality ,CBCT uses systems that are ideal in capturing images of hard tissues especially in the maxillofacial region

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Cone beam

  1. 1. Mohammed Ibraheem Hussien Ali
  2. 2. CBCT device
  3. 3. What is cone beam ?  Is a diagnostic imagine modality that provide high quality .  CBCT uses systems that are ideal in capturing images of hard tissues especially in the maxillofacial region. One benefit of this technology is its ability to provide submillimeter resolution in terms of images. /7 4
  4. 4. What is cone beam ?  It’s called 3D Cone Beam Imaging. It’s fast, simple and completely painless – patients just sit in a chair for a single 10-second scan. And, from that scan, the specialist can quickly see computer-generated views of the bones of the face, the teeth, and other details from any angle, in 3D and in color!
  5. 5. What is cone beam ? It's important for your doctor to have accurate and complete information to plan your treatment.
  6. 6. How Does It Work?  The 3D Cone Beam Imaging system is basically a digital x-ray scanner mounted on a rotating arm. Like a digital camera. It’s called "Cone Beam" because the scanner projects x-rays in a carefully controlled, cone- shaped beam.
  7. 7. How does it work?  You simply sit in a chair while the scanner moves in one complete circle around your head, gathering all the scan data needed. There’s no special preparation necessary.  And while 3D Cone Beam Imaging produces the same kind of high-quality images as a CT (CAT) scan, it does so with less radiation
  8. 8. How does it work?
  9. 9. How does it work?
  10. 10. Advantages in Dental Imaging  Lower dose than helical CT  Compact design  Superior images to Panoramic  Low heat load /7 11
  11. 11. Less time required 1. overall better experience 2. 30 second scan 3. 6 second exposure to the patient 4. Total exam time > 10M 5. Quicker service and better image
  12. 12. CBCT vs. Panoramic /7 13 Cephalometric CBCT image Cephalometric Panoramic image
  13. 13. Applications of CBCT 1. 3-D observation of overall oral/facial bony characteristics 2. Surgical guide fabrication for implant placement 3. 3-D observation of teeth for endodontic diagnosis and treatment 4. Diagnosis and treatment of tooth impactions 5. Identification of inferior alveolar nerve and mental foramen location /7 14
  14. 14. Applications of CBCT  Identification of the location of the maxillary sinus  Identification of the presence of odontogenic lesions  Trauma evaluation and treatment  Analysis of temporomandibular joint characteristics leading to diagnosis and treatment  Identification for referral of numerous conditions or diseases not normally within the realm of dentistry, but that can be shown on typical cone beam images
  15. 15. Radiation exposure of CBCT  Various reports have described the radiation exposure associated with CBCT scans. In 2003, Mahetal reported only a 20% reduction in the total radiation dose associated with cone beam CT compared with conventional CT. However, Schulze et al. (2004) subsequently reported that 3D volumetric images obtained with cone beam technology involved up to four times less radiation than conventional CT. The effective exposure dose for a patient from a CBCT machine has been reported to range from 45 microsievert (μSv) to 650 μSv.
  16. 16. Increasing applications of CBCT ,standared of care and medieo legal implications A. Implantology B. Orthognathic C. Orthodontics D. Orofacial pain and TMJ E. Trauma F. Oral and maxillofacial pathology G. Oral and maxillofacial radiology /7 17
  17. 17. Summary of CBCT application
  18. 18. Implantology With increase demand for replacing missing teeth with dental implants , accurate measurements are needed to avoid damage to vital structures . This was achievable with conventional CT . with CBCT giving more accurate measurements at lower dosages , it is the preferred option in implant dentistry . CBCT enables the assessment of bone quality and quantity ,It is also helpful in the correct assessment of the shape and size of the ridge
  19. 19. Implantology
  20. 20. DENTLA IMPLANT  CBCT works in immediately spotting or locating anatomic structures, incisive canal, submandibular fossa, mandibular canal, and maxillary sinus.. It is valuable in assessing the required number of implants identifying the need for a sinus lift or bone graft, and determining the importance of using implant planning software.
  21. 21. 30-year old male patient referred for 3-dimensional analysis and treatment of an esthetic implant failure in the right lateral maxillary incisor region
  22. 22. SAECOND CASE
  23. 23. 65 years old female with persistence facial pain following implant placement
  24. 24. sagittal image show extensive mucosal thickening within the right maxillary sinus
  25. 25. Implant in sinus
  26. 26. Implant in sinus
  27. 27. For maxillofacial and oral surgery 3D images required with CBCT have been used to investigate the exact location of the exact of the jaw pathologies and assess impacted and supernumerary teeth And the relationship of these teeth to virtual structures.
  28. 28. For maxillofacial and oral surgery 1. Pre and postsurgical assessment of bone graft recipient sites 2. evaluate osteonecrosis changes of the jaws 3. Paranasal sinus pathology and / defect 4. Pretreatment evaluations of patients with obstructive sleep apnea 5. Planning orthognathic and facial orthomorphic surgeries 6. Allows for minimum visualization of soft tissue
  29. 29. For orthodontics treatment
  30. 30. For orthodontics treatment  CBCT is useful in planning orthodontic treatments for complex cases. This holds true if the three- dimensional information is required as a means of supplementing or substituting other forms of imaging. also use CBCT for patients who have cleft palate, root resorption and angulation, and evaluation of impacted teeth .
  31. 31. ORTHODONTIC AND ORTHOGNATHIC
  32. 32. For TMJ  CBCT systems are useful in dealing with temporomandibular joint (TMJ). The systems are effective in the accurate assessment of the TMJ's structures, thereby guaranteeing its correct diagnosis and treatment. One of major advantage of CBCT is ability to define the true position of condyle in fossa, with its accuracy measurement of the roof of glenoid fossa and another advantage is ability to visualize soft tissues around TMJ .
  33. 33. TMJ IMAGING
  34. 34. Degenerative joint disease
  35. 35. Trauma 45 years old male who sustained a fall on an icy side wall
  36. 36. Right condylar head is displaced anteriorly and inferiorly in the glenoid fossa in the closed mouth position
  37. 37. 3D reconstruction show overlapping of bone fragment on the right side
  38. 38. 16 years old male with lost third molar during extraction
  39. 39. Localization of broken elevator in 21 years old female
  40. 40. Oral and maxillofacial pathology 17 years old female with unilateral mandibular radiolucency
  41. 41. Panoramic reconstruction show mandibular involvement of lesion
  42. 42. Axial and coronal images show right mandibular abnormality and evidence of cortical perforation
  43. 43. Cone beam CT

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