Wondering whether you need a CBCT or a regular panoramic X-ray?
Both are valuable diagnostic tools, but they serve different purposes. Understanding how they compare can help you and your dentist make confident, informed choices for your care.
What Is a Panoramic X-Ray?
A panoramic X-ray (often called a "pano") captures a single, wide 2D image of your entire mouth — from ear to ear.
Dentists use it to:
- Check wisdom teeth positioning
- Evaluate jaw growth for orthodontics
- Screen for bone loss or cysts
It's quick, comfortable, and delivers an extremely low radiation dose — similar to a few hours of background radiation.
What Is a CBCT (Cone Beam Computed Tomography) Scan?
A Cone Beam Computed Tomography (CBCT) scan is a 3D imaging technique that shows the teeth, jawbone, nerves, and sinuses in incredible detail. CBCT scans are referral-based to ensure correct prescription and field of view.
Dentists and oral surgeons rely on CBCT for:
- Dental implant planning
- Complex root canal treatment
- TMJ and airway evaluation
- Surgical extractions and bone grafts
CBCT vs Panoramic X-Ray: Key Differences
| Feature | Panoramic X-Ray | CBCT (Cone Beam CT) Scan |
|---|---|---|
| Image Type | 2D overview | 3D cross-sectional views |
| Use Cases | Routine check-ups, braces, wisdom teeth | Implants, surgery, root canal, TMJ |
| Detail Level | General overview only | Precise anatomy (bone, nerves, sinuses) |
| Radiation | Very low | Low-to-moderate (≈ few days of background exposure) |
| Referral Needed | No | Yes |
Many patients start with a panoramic X-ray; if more precision is needed, their dentist orders a CBCT.
When Do Dentists Recommend Each?
Panoramic X-ray
Routine evaluations, orthodontic planning, wisdom tooth screening.
CBCT scan
Implant planning, complex root canal cases, TMJ analysis, airway studies.
In Fremont, it's common for patients to have both — a pano for screening and a CBCT when exact measurements or surgical guidance are required.
Safety & Radiation
Both imaging methods are safe when used appropriately.
- Panoramic X-ray ≈ 2–3 days of natural background radiation [ADA Radiation Safety Guide]
- CBCT ≈ a few days to weeks of background radiation, depending on the scan size [AAOMR Position Statement]
We always follow the ALARA principle (As Low As Reasonably Achievable) and use child-specific settings when needed.
Costs & Insurance Coverage
Panoramic X-rays are typically quick and inexpensive.
CBCT scans cost more because they produce detailed 3D data and require interpretation, but many insurance plans cover them when medically necessary (e.g., for implant or surgical planning).
Our Fremont center offers transparent flat-rate pricing and provides superbills for easy insurance reimbursement.
Which One Do You Need?
Choose Panoramic X-ray for routine dental check-ups or orthodontic records.
Choose CBCT when your dentist needs precise 3D information for implants, surgery, or complex diagnostics.
Your dentist will determine the best option and send us a referral if a CBCT is required.
Where to Get Dental Imaging in Fremont
Located in Warm Springs near Milpitas and I-680, our imaging center offers same-day appointments for both panoramic and CBCT scans. We deliver digital files securely to your dentist the same day and provide you with a personal copy on request.
References & Further Reading
- American Dental Association — Radiation Safety in Dental Practice
- American Academy of Oral & Maxillofacial Radiology — Position Statement on CBCT
- U.S. FDA — Dental Cone-Beam Computed Tomography
- NCBI Bookshelf — Dental Cone Beam Computed Tomography (StatPearls)
- PubMed — Cone Beam Computed Tomography: Basics and Applications in Dentistry (2017)