Cone Beam CT Scanning in Bedford, NH
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A dental cone beam CT scan (CBCT) is a specialized type of 3D dental X-ray that uses a cone-shaped beam of radiation to capture detailed, high-resolution images of the teeth, jawbone, nerves, sinuses, and soft tissues in a single rotation around the patient's head. Unlike traditional 2D dental X-rays, a CBCT scan produces a full three-dimensional model of the oral and facial anatomy — allowing for far more precise diagnosis and treatment planning, especially for dental implants, jaw bone grafting, and complex restorative cases.
At Bedford Center for Prosthodontics, Dr. Paul Connolly uses advanced cone beam CT imaging to evaluate bone density, identify anatomical structures, and digitally plan every step of complex procedures before they begin.
How Does a Cone Beam CT Scan Work?
A cone beam CT scanner rotates once around the patient's head, capturing hundreds of 2D images in roughly 20 seconds. Specialized software then reconstructs those images into a complete 3D model that can be viewed and measured from any angle. The result is a diagnostic-grade view of:
- Tooth position and root structure
- Jawbone height, width, and density
- Nerve pathways (especially the inferior alveolar nerve)
- Sinus location and anatomy
- TMJ (temporomandibular joint) structure
- Airway and soft tissue relationships
Because the cone beam scanner uses a focused beam designed specifically for the oral and maxillofacial region, it delivers significantly less radiation than a traditional medical CT scan while producing images with greater detail for dental purposes.
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What Is a Dental Cone Beam Scan Used For?
Cone beam CT scans are used whenever 2D X-rays cannot provide the level of detail needed for safe, predictable treatment. At our Bedford, NH practice, CBCT is essential for:
Dental Implant Planning
CBCT imaging allows Dr. Connolly to assess bone volume and density, identify nerve and sinus positions, and plan the exact angle and depth of each implant before surgery. This data is also used to design custom surgical guides for precise placement.
Full Arch Restorations (All-on-4 and All-on-6)
For full arch implant cases like All-on-4 and All-on-6, CBCT is critical for mapping bone anatomy across the entire jaw and designing the surgical guide used during placement.
Jaw Bone Grafting Evaluation
When bone loss is present, CBCT precisely measures how much bone is missing and where grafting is needed to support future implants.
Complex Tooth Extractions
3D imaging helps Dr. Connolly visualize impacted teeth, curved roots, and their proximity to nerves and sinuses before extraction.
TMJ Diagnosis
CBCT reveals the bony anatomy of the temporomandibular joint, helping diagnose causes of jaw pain, clicking, and limited movement.
Endodontic and Restorative Cases
3D imaging supports accurate diagnosis of root fractures, canal anatomy, and the structural integrity of teeth under consideration for crowns, bridges, or full-mouth rehabilitation.
Is a Dental Cone Beam Scan Safe?
Yes. While any X-ray involves some exposure to ionizing radiation, cone beam CT scans use a low-dose, targeted beam — delivering significantly less radiation than a traditional medical CT scan of the head. A single dental CBCT typically exposes a patient to roughly the same amount of background radiation they would naturally encounter over several days. The diagnostic benefit — especially for implant and surgical planning — substantially outweighs the minimal exposure.
Dr. Connolly only recommends CBCT imaging when the clinical benefit justifies it, following the ALARA principle (As Low As Reasonably Achievable) for radiation exposure.
What to Expect During a CBCT Scan at Our Bedford Office
A dental cone beam scan is quick, painless, and completely non-invasive:
- You'll be positioned standing or seated, depending on the scanner.
- The scanner rotates around your head once — typically in under 30 seconds.
- You remain still and breathe normally throughout the scan.
- Images are available for review within minutes.
There is no injection, no contrast dye, and no recovery time. Many patients are surprised by how fast and comfortable the process is compared to traditional medical imaging.
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Frequently Asked Questions About Dental Cone Beam Scans
How long does a CBCT scan take?
The scan itself takes approximately 20 to 40 seconds. Including positioning and review, the entire appointment typically takes less than 15 minutes.
What does CBCT stand for?
CBCT stands for Cone Beam Computed Tomography. The name refers to the cone-shaped X-ray beam the scanner uses to capture 3D images — distinct from the fan-shaped beam used in traditional medical CT scanners.
How much radiation is in a dental cone beam scan?
A typical dental CBCT delivers between 30 and 200 microsieverts of radiation, depending on the field of view. For comparison, a traditional medical head CT delivers around 2,000 microsieverts. The scan is also briefer than natural radiation exposure from a cross-country flight.
Does insurance cover a cone beam CT scan?
Coverage varies by insurance provider and the reason for the scan. CBCT scans ordered for implant planning, surgical procedures, or TMJ diagnosis are frequently covered at least in part. Our team will help verify your benefits before your scan.
Is a CBCT scan painful?
No. A cone beam scan is completely painless and non-invasive. You simply stand or sit still while the scanner rotates around your head. There are no needles, no dyes, and no sensation during the scan itself.
Can I get a cone beam scan if I'm pregnant?
As a general rule, dental imaging — including CBCT — is avoided during pregnancy unless there is an urgent clinical need. Always inform our team if you are or may be pregnant before any imaging.
What's the difference between a cone beam scan and a regular dental X-ray?
Traditional dental X-rays produce flat, two-dimensional images that show teeth and some surrounding bone. A cone beam CT scan produces a full 3D model that can be rotated, sectioned, and measured — revealing anatomical detail impossible to see on a 2D X-ray. CBCT is essential for cases where depth, volume, and spatial relationships matter (like implants).
Can a CBCT scan detect tumors or cysts?
Yes. Because CBCT visualizes bone and soft tissue in three dimensions, it can reveal cysts, tumors, and other pathologies that might not be visible on traditional X-rays. If anything unusual is detected, Dr. Connolly will discuss findings and next steps with you.
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