Hey Guys, this presentation is all that a BDS graduate needs to know. A very basic yet important facts about CBCT. Stay Safe Regards Battisi - Dr. Jasmine Singh

1. CBCT IN DENTISTRY
By Dr. Jasmine Singh

2. 2D
3D Faster
Expensive

3. CT and CBCT

4. Radiation Exposure

6. Cone Beam Computed Tomography
3D structure on 3D plane:
100-600 images in single scan

7. X-Ray Generation
1. Patient Positioning
2. X-Ray Generator
3. Scan Volume
4. Scan Factors

8. 1. Patient Positioning

10. 2. X-Ray Generator
ALARA (As Low As Reasonably Achievable)
3 Principles:
1. Time
2. Distance
3. Shileding

11. 3. Scan Volume / Filed of View

12. 4. Scan Factors
Frame Rate
Scan Arc : Usually 360 Degrees
Scan Time : <30 seconds

13. #covid19 #staysafe

14. PLANES OF CBCT

17. You Should have a Good reason to Advise CBCT scan!!

18. INDICATIONS
1. Impacted Teeth
OPG /
PANOROMIC
Vital
Structures?
Impact on
adjacent teeth?

20. 2. Implants
D1 D2 D3 D4
- Correct placement of Implant.
- Determine and measure bone.
Drill Regular size Drill Regular size Drill 1 size smaller Tapping system

21. D2 bone is best bone for implants
Due to good vascularity and Good cortical bone
anchorage

23. 3. Periodontal Evaluation

24. 4. Orthodontic Treatment

25. 3D Cephalometric Analysis

26. Photo Wrapping (Forensics)
• Gun Shot

27. 5. Maxillofacial Lesions
1. Extent of the lesion
2. Vital Structures
3. Invasion to adjacent structures

28. 6. Examination of salivary Glands
Sialography

29. 7. Fractures

30. Other’s
Grafts

31. Contraindications
Soft tissue pathology like→ articular discs of the joints cannot be visualized directly with CBCT. Only
an MRI can visualize the discs directly.
False positive results of Fenestration and Dehiscence
Can't visualise non displaced fractures
Radiosensitivity (Gorlin- Goltz syndrome)
Pregnancy
CBCT is not a screening tool, there should be a diagnostic reason for scan

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