What Is CEREC? (And Why Does it Matter?)

Categories: Articles, Bridges, CEREC, Crowns, General Dentistry, NewsAuthor: admin

At our holistic dental practice in Encinitas, we use the latest and most technologically advanced equipment. Part of our advanced “tool set” is Sirona’s new CEREC AC unit (as well as the new milling unit). While that may just sound like a fancy way to increase prices, it’s actually much more (and in fact, this unit has allowed us to reduce some of our prices).

So what is CEREC? How can CEREC help you, the patient? Why should you choose a CEREC doctor? I’ll try to answer those questions and more, below.

WHAT IS CEREC?
CEREC stands for Ceramic Reconstruction and is a sophisticated system of designing and making high quality, metal-free dental restorations in one patient visit. Developed by Sirona, CEREC utilizes 3D photography and CAD/CAM technology to assist a dentist in designing a virtual restoration (onlay, inlay, crown, or bridge) without taking impressions and, when combined with a milling unit, is able to build the actual restoration while you are still in the chair.

The computer system and camera in the CEREC AC unit have been upgraded substantially from prior units, allowing even a new user to create near perfect restorations on a routine basis.

After being a “CEREC” doctor for almost a decade, I understand the value of what CEREC brings to a practice and a patient. That’s why we recently upgraded to the latest and greatest machine, the CEREC AC. This machine allows us to take digital impressions for restorations (no more gagging on impressions!) and make precise restorations that look excellent, fit perfectly, and last a long time — all out of biocompatible, metal-free materials and all in very little time (a typical crown appointment lasts less than 2 hours, and you don’t need to come back to finish the work… it’s all done in one visit).

HOW YOU BENEFIT:
By upgrading our CEREC machine, we are able to do same-day restorations on almost all procedures (you can have a complete crown done in under two hours, in one visit), including inlays, onlays, crowns, and even some bridges, often at a lower cost to you. Restorations look outstanding, last a long time, and are biocompatible and metal-free. Fewer visits and a lower cost… that’s a pretty good benefit!

HOW DO YOU KNOW IF YOU NEED A CEREC RESTORATION?
If you have been told you need a new crown, inlay, onlay or bridge, you may be a CEREC candidate. If you have a cracked tooth, old failing restorations, or otherwise large damage on your teeth, you may be a CEREC candidate. If you are interested in replacing old metal restorations with biocompatible restorations, you might be a CEREC candidate. Essentially, any large restoration in your mouth may be a possible candidate for a CEREC restoration (this is NOT to say that just because you have an old crown, you need a new one… IF an old restoration needs replacing, CEREC may be a good option for you).

HOW IT WORKS:
The cavity preparation is first photographed and stored as a three dimensional digital model and proprietary software is then used to approximate the restoration shape using biogeneric comparisons to surrounding teeth. The practitioner then refines that model using 3D CAD software. When the model is complete a milling machine carves the actual restoration out of a ceramic block using diamond head cutters under computer control. When complete, the restoration is bonded to the tooth using a resin. CEREC is an acronym for Chairside Economical Restoration of Esthetic Ceramics. (courtesy http://www.cerec.net/index.php/index.html/_/news/products/what-is-cerec-r2)

HISTORY:
The system is manufactured by Sirona Dental Systems in Bensheim, Germany . 1980 Development of the CEREC method at the University of Zurich W. Mörmann, M. Brandestini). 1985 Treatment of the first patient with CEREC (University of Zurich, material: VITABLOCS Mark I). 1986 Siemens acquires the license to market and further develop the CEREC equipment. 1987 CEREC 1 is introduced (chief indication: single and dual-surface inlays; material: VITABLOCS Mark II). 1990 International CEREC Symposium at the University of Zurich. 1991 Hydraulic machining drive replaced by an electronically controlled motor. 1994 CEREC 2 is introduced (range of indications: inlays, onlays, veneers). 1996 CAD/CAM Symposium to mark a decade of CEREC (University of Zurich). 1997 Sirona was formed as the result of the sale of the Dental Division of Siemens AG. 1997 CROWN 1.0 program for producing full-ceramic posterior crowns. 1998 Second material manufacturer partnership is formed (lvoclar, ProCAD). 1998 CROWN 1.11 program for producing posterior and anterior restorations. 2000 CEREC 3 is introduced (compact Windows-based CAD/CAM system). 2000 Third material manufacturer partnership is formed (3M Paradigm MZ100). 2002 More than 2,500 CEREC users in the United States and over 5,000,000 CEREC restorations placed worldwide. 2003 3D software version is released, allowing users to see 3D views of teeth and models. 2006 CEREC Celebrates 20 Years. 2006 Sirona releases BIOGENERIC version of software. This software allows for the machine to accurately reconstruct the missing tooth shape and surface. 2007 More than 23,000 CEREC users world wide. 2008 Sirona release the MCXL milling unit, this milling unit can produce a crown in 4 mins. 2009 Sirona release CEREC Acquisition Center (AC) powered by Bluecam (courtesy http://www.cerec.net/index.php/index.html/_/news/products/what-is-cerec-r2)

THE FUTURE OF DENTISTRY:
CAD/CAM dentistry such as CEREC is the future of dentistry. Utilizing modern technology, a dentist can produce an accurate, safe, biocompatible dental crown, inlay, onlay, or bridge, in just one visit. Technological advances make the system easier to use, more accurate (so you get a better fit right away, which means great comfort and fewer adjustments later), and faster (saving you time in the chair). More dentists are turning to this new technology. Some are new to the system. Others (like us) have been using it for years. While it isn’t perfect (some adjustments will need to be made, and you still need to spend a good amount of time at the dentist), anything that saves you time and money while increasing quality and comfort is a good thing for both the patient AND the dentist.

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ABOUT: Dr. Marvin is a licensed dentist in California with more than 10 years of experience using CEREC technology. As a holistic, natural dental practice, The Center for Natural Dentistry is proud to offer CEREC services to patients who are seeking high quality, biocompatible crowns, onlays, inlays, and bridges in just one visit. To schedule an appointment or for more information, please contact us at 888-825-5351 or by completing the form at http://naturaldentistry.us/contact-us/

The Alternatives to Root Canals

Categories: Articles, Dr. Marvin's Blog, encinitas dentist, FAQ, Hot Topics, News, Root Canal ControversyAuthor: Dr. Marvin

We talk a lot about the alternatives to root canals typically the only alternative mentioned is extraction of the tooth. But is that really the only alternative? Surely there must be other options, right? This was the question posed by Sean after listening to recent podcasts (Root Canals, Infections, Formaldehyde, Oh My!).

The truth is, there are other alternatives depending on the situation. We’ll try to explain it all in detail, here.

First off, if you really need a root canal, then that means the damage has gone too far and you are having serious symptoms (toothache or swelling). At that point, the healthiest option is to extract the tooth and replace it.

Root canals, however, are often recommended for the wrong reasons (such as when a dentist has exhausted or ruled out other sources or causes for tooth pain). A common incident is when the bite is off and the problem tooth is sore and causing pain. Another common example is when the gums have receded and the tooth is painful because of exposed dentin. Of course, taking out the nerve will cut sensation or feeling to the tooth, but it by no means is the source of the problem is cured.

The reason root canals are so often recommended is because many dentists don’t spend enough time diagnosing the root cause of the problem. Diagnosis is time-consuming and inefficient. For every minute a dentist spends diagnosing the source of your dental pain, he or she loses money (because that time could have been spent seeing more patients). While many dentists will dedicate the time to properly diagnose problems, far too many take the easy route and make assumptions in order to quickly provide a solution. Root canals will most often remove the cause of the pain (again, because you’ve removed the nerve), therefore, root canal therapy is often recommended.

Now, if the dentist has properly diagnosed the cause of your problems and if you really have a true need for a root canal (infection or deep cavity), then the damage is too great to reverse. The healthiest alternative to a root canal is simply to take out the infection by removing the tooth.

Does this sound barbaric when you can “save” the tooth with root canal therapy? Probably at first. But what dentists are unaware of are the links between leaving an infected tooth in the body and other systemic illnesses (such as breast cancer). It’s called the focal infection theory. A better question would be, “Would you jeopardize your health to ‘save’ a tooth?”

If you have an infection or severe decay that has caused a deep cavity and a root canal is recommended, your only two options are extraction or root canal therapy. That’s why knowledge and prevention is of utmost importance: learn how to prevent decay and the spread of tooth decay and you’ll never have to deal with a root canal.

If a root canal is recommended to you, you should definitely get a second or third opinion to confirm the true need for the procedure. Unfortunately, too many dentists do root canals for the wrong reasons and you may have other, less “barbaric” solutions if you were misdiagnosed and don’t need to undergo the procedure.

If you already have a root canal and are wondering if there’s a link with that tooth and the rest of the body, view a tooth meridian chart (we have an interactive meridian chart here: Tooth Meridian Chart) or visit a natural or holistic dentist. A lot of times, extracting the problem tooth can help alleviate or eliminate problems (not always, so again, get a second or third opinion before taking action).

The short answer to the alternatives to a root canal question is… If you really, truly need a root canal, you have only two options: root canal therapy or extraction. However, there is always the chance that you have been misdiagnosed and have many, safer, more appealing options available to you.

X-Ray Example of an Amalgam Filling and Tooth Decay

Categories: Dr. Marvin's Blog, encinitas dentistAuthor: Dr. Marvin

I recently had someone ask me to evaluate an x-ray taken by another dentist. As you can see (in the image posted below), there’s clearly an amalgam filling (the bright white spot). You can also clearly see the cavity just to the left of the filling. What you can’t clearly see is what decay is developing below the mercury filling. That’s one of the problems with traditional x-rays.

You can’t see small decay on radiographs.  By the time you see it (as with the decay in this particular image), the decay is large.  X-rays really only see minerals, so only when the tooth has been decayed to the point there are no minerals, then the x-rays will look different.  Waiting until that happens results in more pain and possible extractions (or root canals if you go to a dentist that believes in those).

CT Scans will more clearly show decay under the filling and other small areas of decay (and the patient isn’t exposed to the large quantities of radiation an x-ray produces).

However, based on the decay next to the amalgam filling, and because decay under a poorly placed amalgam filling is very common, there is an above average chance that there is currently decay under the filling, as well.

What else can this one image tell us? Because there’s a large cavity in the tooth beside the silver filling, the patient probably has a diet that is conducive to decay (acidic carb diet). To reduce the chances of future decay, changing to a diet that’s lower in acid (water such as Essentia can help: Essentia Water Review), rinsing your mouth regularly after eating, and adhering to a proper dental care regimen can make a world of difference.

Dr. Marvin

PS: Thanks to the patient for allowing me to reprint this image and show a good example of decay around an amalgam filling. If you have particular questions about the x-ray, please leave a comment and I’ll do my best to get you a good answer.