Cone Beam CT Imaging

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Teeth Whitening - Dear Doctor Magazine Teeth Whitening - Brighter, whiter...
The subconscious impact of a white smile is radiant health, happiness, warmth and invitation. This phenomenon has been reinforced with the spread of American culture worldwide, where an especially white smile has even been coined a "Hollywood smile". Today brighter, lighter, whiter teeth have become a norm. Tooth whitening by bleaching is a successful, conservative, relatively inexpensive and safe alternative... Read Article

 

Porcelain Veneers - Dear Doctor Magazine Smile Design with Porcelain Veneers
In part two of the series on Smile Design, Dear Doctor takes an in-depth look at Porcelain Veneers, a superior yet minimally invasive technique for smile enhancement. We'll explain not only when they're appropriate, but also when they're not... Read Article

 

No-prep Procelain Veneers - Dear Doctor Porcelain Veneers – Without A Drill
No drilling — reality or ridiculous? A no-drill technique requires a second look, as new materials and concepts have created new esthetic possibilities. Reactions and opinions among dentists have ranged from absolute disbelief to moderate acceptance. This article gives hope and reasons for patients to get excited about this conservative drill-free cosmetic technique... Read Article

 

Cosmetic Dentistry - Dear Doctor Magazine Cosmetic Dentistry - A Time For Change
Join us as we review the myriad of possibilities available to you for cosmetic dental change. But the biggest part is not just how your smile looks, it's how you feel when you show it... Read Article

 

Dental Implants - Dear Doctor Magazine Dental Implants - Your Third Set of Teeth
A discovery fifty years ago paved the way for one of dentistry's most exciting, natural looking and successful tooth replacement systems. Learn how dental implants might just possibly change your life... Read Article

 

Tooth Decay - Dear Doctor Magazine What is Tooth Decay?
Tooth Decay is an infection, and many people don't realize that it is preventable. This article is the first in a series about tooth decay, perhaps the number one reason children and adults lose teeth during their lifetime. Explore the causes of tooth decay, its prevention and the relationship to bacteria, sugars and acids... Read Article

 

Tooth Decay – Dear Doctor Magazine Tooth Decay
Don't wait for cavities to occur and then have them fixed — stop them before they start. Modern dentistry is moving towards an approach to managing tooth decay that is evidence-based — on years of accumulated, systematic, and valid scientific research. This article discusses what you need to know to assess your risk and change the conditions that lead to decay... Read Article

 

Tooth Colored Fillings - Dear Doctor Magazine The Beauty of Tooth Colored Fillings
The public's demand for aesthetic tooth colored (metal free) restorations (fillings) together with the dental profession's desire to preserve as much natural tooth structure as possible, has led to the development of special "adhesive" tooth colored restorations... Read Article

 

Wisdom Teeth – Dear Doctor Magazine Wisdom Teeth – To Be Or Not To Be
Facts you need to know about these curiously named teeth. They are so-called because a moderate amount of wisdom is supposedly achieved at about the same time these teeth typically make their appearance. This article will review the problems associated with wisdom teeth and whether or not they should be removed... Read Article

 

Oral Hygiene - Dear Doctor Magazine Oral Hygiene - Dental Health for Life
The best tools for maintaining your oral health and minimizing dental problems are a quality toothbrush, toothpaste, a roll of dental floss, approved mouthwash and good diet. This article cuts through the confusion with a winning game plan for oral health... Read Article

 

Periodontal (Gum) Disease - Dear Doctor Magazine Understanding Gum Disease
Have your gums ever bled when you brushed or flossed? This most commonly overlooked simple sign may be the start of silent (periodontal) disease leading to tooth loss. Learn what you can do to prevent this problem and keep your teeth for life... Read Article

 

Smile Makeover - Dear Doctor Magazine The Impact of a Smile Makeover
Americans are catching on to the emotional and social importance of a healthy, beautiful smile, and they're seeking out ways to improve their smiles. Learn why and what a change could mean for you...Read Article

 

Root Canal - Dear Doctor Magazine “I'd Rather Have a Root Canal...”
A common misconception is demystified. Get the real story about this much maligned procedure that eases pain, rather than causes it... Read Article

 

Invisalign - Dear Doctor Magazine Invisalign Orthodontics
The orthodontic treatment using clear aligners consists of a series of aligners that you change about every two weeks over a course of treatment lasting six to eighteen months depending on how much movement is needed... Read Article

 

Oral Cancer - Dear Doctor Magazine Oral Cancer
This article may just save your life. Learn how to notice any unusual lesions (sores or ulcers) anywhere in your mouth that do not heal within two-three weeks. Early detection is key... Read Article

 

Implant Overdentures - Dear Doctor Magazine Implant Overdentures
Implant overdentures represent a major change for the dental profession and the public. The lower jaw two-implant overdenture may be considered a more appropriate starting point over regular dentures... Read Article

 

TMD - TMJ - Dear Doctor Magazine TMD – The Great Impostor
This “chameleon” of dental disorders manifests in a variety of ways, including joint pain, sinusitus, ear pain, tooth and headaches. The causes of TMD, its signs and symptoms and what can be done to treat this common disorder... Read Article

 

Laser Dentistry - Dear Doctor Magazine Lasers Shine a Light on Dentistry
Lasers have revolutionized medicine and now they're beginning to blaze a new trail in dentistry. Today, at the dawn of the 21st century there are a variety of dental uses for lasers, from diagnosing cavities and the removal of gum and tooth structure to the treatment of disease... Read Article

 

Sedation Dentistry - Dear Doctor Magazine Oral Sedation Dentistry
Step out from under the shadow of fear and into the calm of sedation dentistry. There are safe and time-tested options available to ensure that you have a positive and painless dental experience. Your apprehension and hypersensitivity to pain melt away, yet you remain awake and in control... Read Article

 

Snoring and Sleep Apnea - Dear Doctor Magazine Sleep Disorders and Dentistry
If my partner snores loudly, should I be concerned and what can be done to alleviate the problem? Why does my sleeping partner have lapses in breathing while sleeping and is it dangerous? Why do I wake up exhausted even though I get up to 10 hours sleep at night? The answers to these and more questions and how dentistry can help all revealed within... Read Article

 

About Dear Doctor Dentistry Magazine
Dear Doctor - Dentistry & Oral Health is a dental magazine written for the education of the general public. Dear Doctor provides information that is accurate, authoritative, and trustworthy on all aspects of dentistry and oral health including teeth whitening, porcelain veneers, dental implants, cosmetic dentistry, smile makeovers and more.

Copyright © 2012 Dear Doctor, Inc. All rights reserved. Copying or reproducing any text or graphics is strictly prohibited.

Cone beam dental scans.In the early 20th Century, not long after X-rays were discovered, medical professionals recognized their value as diagnostic tools: They could clearly reveal structures hidden inside the body without the need for risky surgery. At the dawn of the 21st century, a revolutionary new technology has entered the diagnostic arena. Today, Cone Beam Computed Tomography (CBCT) promises to change the way many dental problems are diagnosed and treated.

Cone Beam CT has some similarities with conventional X-rays, and also with the standard CT scans you would get in a hospital setting. But it's a quantum leap forward in technology and diagnostic precision. For the dentist, it offers the ability to visualize intricate structures inside the mouth, such as root canals, nerves and sinuses (air-filled spaces) in the jaw — in three dimensions — without surgery. For the patient, it can reduce the need for invasive procedures, shorten treatment time and offer the chance for a better outcome.

The detailed diagnostic images that CBCT provides have made it an essential tool in many dental specialties. But, as with any diagnostic tool that uses radiation, the medical benefits offered must be weighed against the (small) potential risks of the procedure.

How Cone Beam CT Works

X-rays, like visible light, are a form of energy on the electromagnetic spectrum. Just as light makes an image on photographic film (or a digital camera sensor), X-rays can also form an image. The difference is that energetic X-rays can penetrate bone and soft tissue, and reveal its hidden structure by their varying degrees of absorption; in other words, they form a grayscale picture of what's underneath the surface. But conventional X-rays are limited: Like a still-life picture, they show only one perspective on the scene.

Now imagine a “flip book” — the kind of small book made up of a series of pictures, each slightly different. When you rapidly page through it, you may see (for example) an animated cartoon or a still subject from different perspectives. If you could put together a flip book made from a series of X-ray “slices” of the same subject, taken at slightly different angles, you would be able to create an “animation” of the X-rays. And from there, it's only one more step to making a 3-D model.

That's exactly what CBCT scanners do. Using a rotating imaging device that moves around the patient's head, the scanner records between 150 and 600 different X-ray views in under a minute. Then, a powerful computer processes the information and creates a virtual model of the area under study. When it's done, the model appears as a three-dimensional image on a computer screen: It can be rotated from side to side or up and down, examined in greater or less detail, and manipulated in any number of ways — all without the patient feeling any discomfort... or even being present.

Where Cone Beam CT Is Used

The ability to see fine anatomical structures in 3-D has proven invaluable in treating conditions in many areas of dentistry.

  • Orthodontics: Having accurate information on the position of teeth and jaws helps determine exactly how and where teeth should be moved.
  • Dental implants: Detailed CBCT images are used to determine the optimum location for the titanium implants while avoiding nerves, sinuses and areas of low bone density.
  • Orthognathic Jaw Surgery and Temporo-mandibular Joint (TMJ) Disease: Patients benefit when the specialists who treat these conditions can evaluate their anatomy with the three-dimensional perspective that cone beam CT provides.
  • Oral Surgery: Treatment for tumors or impacted teeth is aided by the level of fine detail shown in these scans.
  • Endodontics: Dentists performing intricate procedures (like complex root canals, for example) can benefit from a clearer visualization of the tooth's anatomy.
  • Sleep Apnea: Imaging the tissues and structures of the nose, mouth and throat can aid in diagnosis and treatment of this dangerous condition.

Could Cone Beam CT Benefit You?

Each patient's situation is different, and must be carefully considered by a clinical professional before any test or procedure is performed. While CBCT delivers a smaller dose of radiation (X-rays) than many other diagnostic tests, it still carries a small risk — particularly for younger patients, or those with other health problems. As is the case for any medical procedure, all risks, benefits and alternatives are taken into account before the procedure is recommended.

Related Article

Cone Beam Dental Scans - Dear Doctor Magazine

Getting The Full Picture With Cone Beam Dental Scans Dental imaging took a major leap forward at the beginning of the new millennium with a three-dimensional technology known as cone beam computed tomography (CBCT). The name comes from the cone-shaped beam of x-rays the CBCT machine projects as it rotates around a person's head, taking multiple images that are compiled into a 3-D picture by a computer. Find out what CBCT can reveal and how it helps a doctor to make a highly informed diagnosis and choice of treatment... Read Article