3D Imaging CBCT

What Is CBCT?

CBCT — Cone Beam Computed Tomography — uses a cone-shaped beam of X-rays that rotates 180–360° around your head to capture hundreds of images in a single, quick scan. Specialised software then assembles these into a precise, manipulable 3D model of the area being examined.

Unlike a standard medical CT scan (which uses much higher doses and is designed for whole-body imaging), CBCT is purpose-built for dentistry. It delivers a fraction of the radiation, focuses on thejaw and teeth, and gives extraordinarily detailed images of dental hard tissues.

CBCT vs Standard 2D X-rays — Why 3D Matters

A 2D X-ray (panoramic, periapical, bitewing) flattens a 3D structure into a single image. Overlapping teeth and bone can hide critical findings. CBCT removes that limitation entirely — every structure is visible in its true anatomical position.

A 2D X-ray shows:
A flat, single-plane image of teeth and bone
Limited information about depth, width and 3D relationships
Overlapping structures (sinuses, nerves, adjacent teeth) that may obscure findings
A CBCT shows:
True 3D anatomy — every tooth, root, nerve and sinus in its precise position
Bone height, width and quality measured to the millimetre
Bone height, width Anatomy of root canals — including extra or curved canals not visible on 2Dquality measured to the millimetre
The exact relationship of teeth to nerves, sinuses and adjacent structures
Pathology (cysts, tumours, fractures) that may be entirely missed on a 2D image

Field of View — Targeted Scans for the Right Job

Modern CBCT scanners offer different “field of view” (FOV) settings — the size of the area captured. A smaller field of view means lower radiation dose and higher resolution. At Dentistar, we always use the smallest field of view that adequately covers the area we need to examine.

The Procedure — What to Expect

Preparation

Remove jewellery, glasses, hearing aids, removable dentures and anything metallic from the head and neck area. A lead apron and thyroid collar are placed.

Positioning

You stand (or sit, depending on the unit) with your chin on a small rest. The unit gently positions your head. You'll be asked to bite gently on a small bite block and stay still.

The scan:

The C-arm rotates around your head — usually a single rotation of 14–40 seconds. You don't feel anything. The unit is quiet.

Image reconstruction:

The CBCT software reconstructs the 3D model within 1–2 minutes. We can then view it from any angle, take measurements and plan in 3D.

Discussion:

We sit down with you to walk through the findings on screen. Our experience is that patients understand their own anatomy — and the planned treatment — far more clearly with a 3D image than a 2D one

Total appointment time:

Typically 15–20 minutes including consultation.

Limitations & When 2D Is Enough

CBCT is powerful — but it's not the right tool for every case. We don't routinely take a CBCT for:
Routine preventive check-ups
Simple cavity detection between teeth (bitewings are perfect for this)
Straightforward extractions of mobile or simple teeth
Standard orthodontic check-ups in children
Most periodontal monitoring
For all of these, 2D imaging (bitewings, periapicals, panoramics) provides what we need at lower radiation. CBCT is reserved for when 3D detail is genuinely needed

When We Use CBCT — Clinical Applications

1) Endodontic Treatment (Root Canals)

CBCT has transformed endodontics. It reveals the true 3D complexity of root canal anatomy —information that a single 2D X-ray often simply cannot capture.

What CBCT shows in endodontics:
Extra or accessory canals that a 2D X-ray missed (a major cause of treatment failure)
True canal curvature and length — for accurate, safe instrumentation
Vertical root fractures — almost impossible to confirm on 2D images
Internal and external root resorption — exact size, location and extent
The size and location of periapical lesions (infection at the root tip) in 3D
Relationship of the root tip to the inferior alveolar nerve or maxillary sinus — critical for safe treatment
Separated instruments or perforations from previous treatment

When CBCT is recommended in endodontics:
Complex root canal anatomy (especially upper molars, lower premolars)
Re-treatment of a previous root canal that has failed
Suspected root fracture
Unexplained persistent pain after a root canal
Trauma to a tooth with possible root involvement
Endodontic surgery (apicoectomy) planning

2) Dental Implants

CBCT is the gold standard for implant planning. No modern implant case of any complexity should proceed without a 3D scan — and at Dentistar, every implant we place is digitally planned on CBCT data.

What CBCT shows for implant planning:
Exact bone height and width at the planned implant site
Bone quality (density classification: D1, D2, D3, D4 — affects healing and protocol)
The position of the inferior alveolar nerve (lower jaw) — critical for safety
The position and floor of the maxillary sinus (upper jaw)
Proximity to adjacent tooth roots
Identification of bone defects that may need grafting
Whether immediate or staged placement is feasible

CBCT lets us decide, before surgery:
Implant length and diameter (matched to available bone)
Implant angulation (to avoid nerves, sinuses and adjacent teeth)
Whether bone grafting is needed — and how much
Whether a sinus lift is needed (and if so, open or closed technique)
Whether a surgical guide is needed for accurate placement

3) Fabrication of Surgical Guides

Fabrication of Surgical Guides Surgical guides — custom-made 3D-printed templates that direct an implant into its exact pre-planned position — are entirely dependent on CBCT data. They are the cornerstone of modern, precise implant surgery.

How CBCT enables surgical guides:
CBCT captures the bone in 3D
A digital intraoral scan captures the surface of the teeth and gums
Both datasets are merged in specialised planning software
The dentist virtually plans the ideal implant position on the merged 3D model
A custom guide is 3D-printed based on this plan
During surgery, the guide directs the implant drill — and the implant itself — to the exact pre-planned position with millimetre precision
The result: implants placed with accuracy that was simply not possible with 2D-only planning.

Surgical guides are particularly valuable for:
All-on-X (full-arch) implant cases
Complex multi-implant cases
Cases with limited bone or close to nerves/sinuses
Immediate loading protocols (where the temporary bridge is pre-fabricated)
Flapless implant placement (no incision needed)

4) Wisdom Tooth Extractions

For impacted lower wisdom teeth — particularly those positioned close to the inferior alveolar nerve — CBCT provides the safest possible pre-operative roadmap.

What CBCT shows:
The exact 3D position of the wisdom tooth
The precise distance between the tooth roots and the inferior alveolar nerve
Whether the roots wrap around or perforate the nerve canal
Adjacent tooth root involvement
Cyst or pathology around the tooth

5) Orthodontic Planning

CBCT supports advanced orthodontic diagnosis in cases where 2D imaging isn’t enough.

Key orthodontic uses:
Locating impacted teeth (especially canines) in 3D — critical for treatment planning
Assessing airway dimensions — important in patients with breathing or sleep concerns
TMJ joint analysis — bone shape, condyle position, joint pathology
Bone density and quality assessment for skeletal anchorage (mini-implants)
Surgical orthodontics — pre-operative planning for orthognathic cases
Detecting root resorption from prior orthodontic movement

6) Pathology & General Diagnostic Uses

CBCT detects and characterises pathology in the jaws with a precision no 2D imaging can match.

Diagnostic applications include:
Cysts (radicular, dentigerous, keratocystic, residual) — true size, location and extent
Benign tumours (ameloblastoma, odontoma, fibroma) — boundaries and impact on surrounding structures
Suspected malignancies — initial assessment before specialist referral
Jaw fractures — exact line, displacement and involvement
TMJ disorders — degenerative changes, asymmetry, joint pathology
Sinus pathology (sinusitis of dental origin, polyps, mucocoeles)
Salivary gland stones
Foreign bodies in soft tissue or bone
Unexplained chronic pain — investigating the underlying cause
Pre-operative planning for any complex surgical case

7) Pre-Prosthetic & Reconstructive Planning

Diagnostic applications include:
Bone graft planning — exact volume and location needed
Sinus lift planning — choosing between open (lateral window) and closed (crestal) technique
Ridge augmentation planning
Full-mouth reconstruction — 3D understanding of bite, joint and bone

Safety & Radiation Dose

A common — and reasonable — concern about CBCT is the radiation dose. The reality: modern dental CBCT uses far less radiation than a medical CT, and at Dentistar we always select the smallest field of view, lowest acceptable dose setting and shortest scan time appropriate for each case.

Typical radiation comparisons:
Small-FOV CBCT (single tooth, endo case): 0.02–0.05 mSv
Medium-FOV CBCT (implant planning): 0.05–0.10 mSv
Large-FOV CBCT (full jaw, complex case): 0.10–0.20 mSv
Standard panoramic X-ray: 0.01–0.03 mSv
Background radiation per year (Cyprus): ~3 mSv
Single transatlantic flight: 0.04–0.08 mSv
Medical CT scan of the head: 2–4 mSv (40–100× higher than dental CBCT)

In other words, a focused dental CBCT exposes you to less radiation than a typical long-haul flight —and dramatically less than a medical CT scan. The clinical benefit of a CBCT, when indicated, vastly outweighs the radiation risk.

Safety Measures at Dentistar

Lead apron and thyroid collar always provided
Smallest possible field of view always chosen
Lowest dose protocol selected for the clinical question
CBCT only when 2D imaging is insufficient (ALARA principle — "As Low As Reasonably Achievable")
Special care and reduced exposure protocols for children and young adults
CBCT generally avoided in pregnancy unless absolutely urgent

Everything You Need to Know

Frequently Asked Questions (FAQ)

Is a CBCT scan safe?

Yes — extremely safe when used appropriately. A focused dental CBCT exposes you to less radiation than a transatlantic flight, and far less than a medical CT scan. With a lead apron, thyroid collar and the smallest field of view possible, the clinical benefit vastly outweighs the radiation risk in cases where 3D imaging is indicated.

How is CBCT different from a normal medical CT scan?

CBCT is purpose-built for dentistry — it focuses on the teeth and jaws, delivers far lower radiation(typically 40–100 times less than a medical CT), and produces extraordinarily detailed images of the dental structures. Medical CT is designed for whole-body imaging and uses much higher doses.

How long does a CBCT scan take?

The scan itself takes between 14 and 40 seconds, depending on the field of view and protocol. The entire appointment — preparation, scan and review — is typically 15–20 minutes.

Will I feel anything during the scan?

No. You simply stand still while the C-arm rotates around your head. It’s quiet, painless and odourless. Some patients find the bite block and chin rest slightly unfamiliar at first, but most describe the scan as easier than a panoramic X-ray.

Will I need a CBCT for my dental implant?

Almost certainly yes. CBCT is the standard of care for implant planning at Dentistar. It lets us see the exact bone available, the position of nerves and sinuses, and plan the implant in 3D before surgery— leading to safer, more predictable results.

Do you take a CBCT for every root canal?

No — only when 3D detail is genuinely needed. Routine root canals are planned with 2D periapical X-rays. CBCT is reserved for complex root canal anatomy, retreatment cases, suspected root fractures, persistent unexplained pain, or root canal surgery (apicoectomy).

Is CBCT safe for children?

Yes, with stricter dose reduction protocols and only when clinically necessary. We use smaller fields of view and lower exposure settings for younger patients, and only take a CBCT when the clinical benefit clearly outweighs the small radiation risk. For most paediatric cases, 2D imaging is sufficient.

Can I have a CBCT during pregnancy?

Routine CBCT is postponed during pregnancy, particularly in the first trimester. In genuine emergencies (e.g. suspected severe infection or trauma), CBCT may be performed with full protective shielding — but we always prefer to wait if it’s clinically safe to do so.

Can I bring a CBCT scan from another clinic?

Yes. If you’ve had a recent CBCT (typically within 12 months) at another practice, send it to us as a DICOM file (the standard medical imaging format) — we can view it directly in our planning software. We don’t take a new scan unless the older one is missing information we need.

Do you keep my CBCT scan?

Yes. All your imaging is stored securely as part of your medical record. You can request a digital copy at any time on a USB or via secure transfer.