CONE BEAM COMPUTER TOMOGRAPHY (CBCT) IN DENTISTRY – SAFE OR EXCESSIVE RADIATION
The innovation of CBCT has made a revolutionary impact on diagnostic imaging in the dental field. CBCT is a specialized imaging technique that delivers detailed 3D images and an overview of dental structures, including soft tissues, nerves, and bones – all in a single scan.
USES
- Dental implant planning
- Endodontic diagnosis
- TMJ Analysis
- Assessment of impacted teeth
- Dental pathology detection (cysts, tumors)
Apart from conventional 2D X-rays, CBCT provides clear visualization of the related dental structures, which will help the dental professional to make accurate diagnostic decisions and proper treatment planning.
RISKS
Along with several advantages, CBCT exposes patients to higher doses of radiation than conventional intraoral radiographs. According to the comparative study by Signorelli et al., 2016, the radiation dose of a CBCT is about 3–6 times an OPG and 8–14 times a PA.
REGULATORY GUIDANCES
In Canada, provisional regulatory bodies like the Royal College of Dental Surgeons of Ontario (RCDSO) and BC College of Oral Health Professionals (BCCOHP) provide clear guidelines:
- The ethical aspect of CBCT relies on ALARA – As Low As Reasonably Achievable.
- CBCT should be used only when expected benefits outweigh the risks.
- Both clinical exam and patient history should justify its use.
- Must obtain informed consent.
- The operator should be trained and certified in CBCT interpretation.
CBCT is a powerful radiographic tool in modern dentistry that should be used in a responsible manner. It plays a crucial role in enhancing accuracy in diagnosis and leads to a proper treatment plan. The use should be justified clinically, aligning with best dental practices to avoid unnecessary exposure. The balance between the benefits and the risks is always guided by the professional for the best of the patient.
If you have any questions or want more information, we invite you to call our team at The Smile Team in Scarborough, Toronto, Ontario, today at 416-546-5599. We look forward to helping you in any way we can, and we thank you for the opportunity!