Biocompatible Zirconium Oxide Ceramic Dental Implants

In the world of medicine, zirconium oxide is being used more consistently as the material of choice for bone related reconstruction, particularly hip prosthesis. This growing trend has led to substantial clinical reports which confirm the high biocompatibility and quality of zirconium oxide, making it an attractive component for use as dental implants. Not only does Zirconium Oxide overcome most of the pitfalls of other dental implant products (such as Titanium), but patients now have a choice of a material that is esthetic, strong, pure, corrosion-free, biocompatible and capable of being used for all dental implant and appliance applications.

Why biocompatibility is so important

The immune system will typically respond to non-compatible dental materials as if they were infections or ‘invaders’ by initiating a cascade of reactions geared toward eliminating that ‘invader’. A good analogy to this would be how your body reacts to a cold or flu by elevating levels of lymphocytes and activating the immune system, a reaction that eventually rids the body of the cold or flu. The difference is that with dental toxicity the source of the problem is permanently imbedded in the mouth, and therefore there is no way for the ‘infection’ to be eliminated by the immune system.

Using only quality biocompatible materials that are proven to have very low adverse allergic reactions and present no negative responses from the immune system is highly important for the health of our patients. It is also the reason that biological, natural and holistic dental practices strive to use only materials that are as neutral as possible. Zirconium is a very strong, inert material with very low allergic potential and therefore a higher biocompatibility than other materials used as dental implants.

What non-compatibility looks like

Considering that every person’s body and physiology is unique, some individuals will be more compatible than others with certain types of materials used in dental treatments and procedures. But ultimately, a biocompatible material will not cause:

• allergic reaction
• irritation
• inflammation
• foreign body response (rejection)
• cancer and other autoimmune disorders

An all-ceramic dental crown over an all-ceramic dental implant looks and functions very much like the missing tooth did. Ceramic implants provide metal-free tooth replacement solutions, eliminating concerns of allergies and biocompatibility issues thereby lessening concerns for damage to the immune system. Zirconium Oxide provides safe, holistic results that are comfortable, natural in appearance and biocompatible:

• Zirconia implant is the holistic dental implant for absolute metal-free dentistry
• The white color of Zirconium far surpasses the metallic appearance of Titanium
• Ceramic implants and crowns retain less plaque and calculus than Titanium and therefore promote healthier gums and mouth

Our objective is to make as many biocompatible options available to our patients as possible and it is important to us to achieve the highest level of biocompatibility, particularly in cases where patients have compromised immune systems. Whenever considering a dental restoration we strongly suggest that extensive biocompatibility and metal allergy testing be done beforehand to ensure the best results.

Cell Phones May Pose Increased Health Hazards to Patients with Metallic Dental Implants

All cell phones emit electromagnetic radiation called RF (radio frequency) and EMF (electromagnetic fields). Considering the close proximity of the cell phone to the head during use, there is clear potential for EMF emissions to be harmful to any of the 300 million healthy cell-phone users in the United States today. However, patients who have undergone metal implant surgery as well as those who may still have amalgam fillings and/or dental fixtures are potentially at a much higher risk of harm than someone who has no metallic structures in their mouth whatsoever.

The use of metallic implants and fillings in the mouth is known to have the ability to create a potentially dangerous situation called ‘galvanism’. The body’s normal electrical (bioenergetic) current fluctuates at about 450 millivolts. Galvanism occurs when saliva mixes with amalgam (or metal) fillings and/or implants resulting in a jump of the normal oral electric current up to 1,000 millivolts or higher. This jump in oral electric current is without factoring in the amplified EMF fields associated with cell phone use and other types of exposure to electromagnetic fields. This kind of highly charged electrical current can quite easily overpower the body’s normal electrical flows and potentially interfere with energy flow to the brain. It is also suspected of causing various irritations to the nervous system.

What kind of damage are we talking about?

Studies have shown that the radiation from cell phones to which the user is exposed may in fact be the culprit behind a wide range of health problems including headaches, pressure or tingling in the head, earaches, eye problems including distortion of vision, memory loss, fatigue, brain tumors, DNA alteration or damage and changes in the brains electrical activity. Some studies have shown rats to develop lymphoma from prolonged electromagnetic fields exposure. For patients who have metallic dental repairs, the risk is quantified significantly. Additional symptoms may include:

• Increased arthritis
• Skin problems
• Ear problems
• Risk to leukemia
• Childhood cancer
• Sleep problems
• Depression
• Difficulty in concentrating
• Mental conditions

For more than thirty years, research conducted at the Electric Power Research Institute (EPRI) has focused on whether EMF associated with electricity can cause biologic changes or negatively affect health. Hundreds of studies have also been reviewed in health risk evaluations by the World Health Organization and other national and international organizations concerned with public health.

While some red flags have been raised over the years, what is being debated now at the national and international level is just how much radiation should be considered ‘unsafe’, and if there are any potential long-term side effects of continued cell-phone radiation exposure. Nobody knows with certainty what long-term health consequences EMF-induced biological effects may lead to – or how co-mingling metal implants and dental repairs with EMF radiation might affect the human body. The issue remains quite controversial. However, due to the growing depth of evidence pointing to various problematic interactions, concern is justified. Regardless, research has clearly shown that electromagnetic emissions from cell phones can cause significant biological effects and we know for a fact that metallic dental implants and fillings can create an electrical resonance of their own. When you combine these two disparate elements together, you have a potential recipe for disaster – one that can pose serious challenges to the long term health and wellness of anyone who has been fitted with metallic dental materials.

How metal implants may exaggerate harmful effects posed by cell phone use

Having dissimilar metals in the teeth (e.g.-amalgam; or gold and mercury, or stainless steel and mercury and/or titanium) causes a measurable galvanic action, or electrical currents, this is what is called “battery mouth”. These types of currents cause the amalgam levels (more often than not containing mercury vapor) to rise in surrounding tissues. The average mercury levels in gum tissue near amalgam fillings is about 200 ppm, and are the result of mercury flowing directly into the mucous membrane by way of galvanic currents. Dental amalgams also release significant amounts of silver, tin and copper which have well known toxic effects of their own. Even more alarming is the fact that amalgam containing zinc produces even higher galvanic currents.

Electrical currents can harm the immune system

Among other things, the electric currents and ionic flow between various dental alloys has been shown to cause irritation in the trigeminal nerve which is the main cranial nerve system; blocking the flow of major acupuncture meridians. This blockage can lead to greater overall dysfunction throughout the body and it can significantly challenge the immune system, which in turn can lead to chronic and debilitating health issues. It doesn’t take a much of an increase in the flow of energy to create harmful effects in the human body. Scientific studies associated with oral galvanism have determined that currents of just over 5 microamps is usually enough to cause significant health problems such as headaches, migraines, dizziness, nausea, etc. Removing the amalgam filling, metal fixture or dental repair essentially eliminated the problem in patients participating in this study.

Some studies have also found persons with chronic environmental exposure to electromagnetic fields including microwaves or MRIs to have higher levels of mercury exposure and excretion. And, interestingly enough, post MRI saliva mercury levels for a sample of patients reported on average 31 percent higher after MRI than before.

What the research reveals about metallic implants and cell phone use

Researchers in one study involved two basic types of implants: metallic pins and rings in the surface layers of the human body – positioned near the mobile phone. The goal in this case was to discover ‘the worst case scenario’ with respect to energy absorption. Researchers noted that “Based on the simulations of this study, the local absorption of EM field in a limited volume may be significantly (even by a factor of 700) enhanced by a conductive implant in the surface layer of a human body. The mobile phone and the metallic implant are strongly coupled, especially when the implant is close to a mobile phone, its length is in resonance with the field, and it is aligned with the antenna. This coupling can be either conductive, magnetic or both (Troulis et al 2003).”

Immediate symptoms of heightened danger

A few recommendations for reducing exposure to harmful EMF radiation when using a cell phone might include making only short and essential calls, and always use hands-free wired kits. Some studies suggest that positioning the phone’s antenna far away from the body during the calls may also be helpful. But, how can you tell if your cell phone is causing a problem? Several topical symptoms are immediately recognizable and they include:

• Fatigue
• Headache
• Warmth behind the ear
• Warmth on the ear
• Burning skin

The long term solution

Removing any amalgam fillings, metal fixtures or dental repairs will more than likely eliminate potential and confirmed health problems in patients. Overall, ceramic dental implants and repairs are the best alternative and they are highly resistant to corrosion and superior to other implant materials such as titanium and amalgams. They also have a higher level of human biocompatibility with the added benefit of a far superior aesthetic value for patients.

Sources:

JOÓ, ERVIN, ANDRÁS SZÁSZ, AND PÉTER SZENDRÖ. “Metal-Framed Spectacles and Implants and Specific Absorption Rate Among Adults and Children Using Mobile Phones at 900/1800/2100 MHz.” Electromagnetic Biology and Medicine, 25: 103–112, 2006.

H Virtanen, J Huttunen, A Toropainen and R Lappalainen. “Interaction of mobile phones with superficial passive metallic implants.” Physics in Medicine and Biology 50 (2005) 2689–2700.

H Virtanen, J Keshvari and R Lappalainen. “The effect of authentic metallic implants on the SAR distribution of the head exposed to 900, 1800 and 2450 MHz dipole near field.” Physics in Medicine and Biology 52 (2007) 1221–1236.

Has the Dental Work in Your Mouth Turned You Into a Walking Antenna? http://www.drlinagarcia.com/view_articles.php,t=30

The prevention of occupational risks of electromagnetic fields. http://www.officiel-prevention.com/protections-collectives-organisation-ergonomie/rayonnements/detail_dossier_CHSCT.php?rub=38&ssrub=126&dossid=338

Are Metal Free Dental Implants Better than Titanium Implants?

Owing to their biocompatibility, high density and ability to withstand abuse, zirconia bioceramics are a far superior product when compared to metal for implantation in the human body. They are also an excellent choice as a dental implant material.

All-ceramic dental crown placed over an all-ceramic dental implant look and function very much like the natural tooth and they provide a top-to-bottom metal-free teeth replacement solution. This eliminates concerns of allergies and biocompatibility issues thereby lessening potential for damage to the immune system and adverse health problems. The term ‘bioceramics’ applies to a wide range of materials that, when compared to traditionally used metal implants, are harder and have higher temperature resistance, strength, very high density and excellent resistance to corrosion. These properties make ceramics invaluable for use in the oral environment where high temperature, corrosion and constant abrasion is ever present.

The Benefits of Zirconia Over Metal

While most dental implants are made of titanium, materials such as aluminum and vanadium are often alloyed or blended with the titanium which can create issues of allergy, galvanism and potentially impair the immune system in a number of ways. When differing metals are placed in the mouth or directly into the jaw bone as with a dental implant, those metals will eventually begin to release by-products from the oxidization process and are then circulated throughout the body.

For over five years zirconia dental implants have been available in the United States as an alternative to metal implants and they have been used quite successfully in Europe for over fifteen years. The advantage of these implants is that they are ceramic, and thus there is no concern of corrosion, galvanic/electrical activity or response to electromagnetic radiation. Zirconia (Zirconium Oxide) is not to be confused with Zirconium which is a metal found just below titanium on the periodic table. Zirconium oxide is the product now being used for the production of dental implants, it is the ceramic phase of Zirconium and it is called Zirconia.

Overall qualities of Zirconia dental implants include:

Biocompatibility: zirconium is an inert material with very low allergic potential.

Strength: The strength of the dental implant is exceptional compared to metal implants.

Metal-free: no corrosion, no galvanism effect, no metallic taste and no electronic disturbances.

Bone to Implant Contact:  Very high bone contact to the implant, above 75 percent.

Considerations Prior to an Implant

When patients exhibit overall healthfulness and are generally of a robust constitution, they tend to tolerate implants very well, but before considering something as serious as an implant procedure, a full health assessment is in order. In conjunction with assessing the patient’s physical state and ability to heal from surgery, most holistic dental practices are also concerned about the acupuncture meridian upon which the implant is placed. Every tooth in the mouth is located on an acupuncture meridian, and therefore can potentially affect specific organs, muscles, vertebrae and tissues.  Zirconia implants are preferable over metal implants for their biocompatibility factors but also very importantly they do not interfere with energy flow along one’s acupuncture meridians. Electrical skin resistance tests  are used to assess an individual’s energy system by measuring the energy meridian flows at specific accupoints on the body. These tests have shown that zirconia implants unlike metal implants do not interfere with the energy meridian system. 

Another consideration in whether or not to place implants for a particular patient has to do with whether or not they grind their teeth which might cause damage to the zirconia over time. In such cases nightguard is integrated in the overall treatment plan. Habits such as smoking or chewing tobacco may also negatively affect the long-term success of implants both ceramic and metal. And ultimately, patients with implants must be diligent about maintaining good oral hygiene.

How it Works

A reproduction of a tooth’s root is inserted in the jaw and over time, the implanted “root” bonds with the bone of the jaw. In other words, ceramic dental implants readily allow the bone to grow right up to the implant surface and is held securely in place by the bone. This process typically takes four to six months to completely heal before the permanent crown can be made.

Implants are integrated into the mouth in two basic stages.

First, a dental implant root is placed in the mouth. This root is often shaped like a screw. After surgery, the root will slowly integrate with the jaw bone in a stage called osseointegration which can take four to six months before the restoration(crown) phase of the process. Zirconia Implants have a very high bone-to-implant contact and some studies have shown up to 80% bone attachment to the surface of zirconia dental implants.

Once the osseointegration is complete, the dentist will take an impression to make a mold of your implant and other teeth. The mold will be sent to the dental laboratory and a crown is made just like on a natural tooth. The process is complete when the crown is returned and cemented on the implant. Since this crown is also made of zirconia it is usually indistinguishable from the surrounding natural teeth.

Caring for Your Implant after Surgery And Beyond

During the entire process, it is important for the patient to follow to all of the dentist’s instructions regarding oral hygiene. Regular brushing and flossing are key to the success of the osseointegration, and sloppy oral habits can potentially compromise a dental implantation surgery and the ultimate success of the implant.

Once your implant is fully integrated, caring for your teeth is very much like taking care of your natural teeth. Correct oral care must be followed including brushing and flossing at least twice a day. Ceramic dental implants will give you many years of use if cared for properly.

Some Facts about Metal-Free Dental Implants

Metal Free dental implants (ceramic dental implants) are preferred by holistic dentists and patients alike for both their functional and cosmetic attributes. The unique characteristics of the implant itself virtually eliminate issues of bone deterioration, soft tissue (gum) discoloration and help to improve a patient’s ability to chew food normally. Ceramic implants are biocompatible and easily incorporate into the surrounding bone, which results in permanent stability of teeth and a natural cosmetic look which patients prefer.

Metal free dental implants are metal-free

Sensitivities or allergies to metals commonly used in dentistry can be a problem for many people. In addition to sensitivity and allergy issues, holistic dentists have concerns about electrical effects of titanium and titanium alloy  implants with their abutments and crowns. More often than not, all the aforementioned parts are made of different metals and metal alloys. The pairing of dissimilar metals to replace missing teeth in the mouth create a “battery effect” or low electrical currents when combined with saliva. This phenomenon is called “oral galvanism” and if you have silver fillings they can participate in or intensify the process. Data collected by dentists and researchers shows that oral galvanism may affect health and most particularly the function of the nervous system.

Metal free dental implants are made up of the dioxide of zirconium. Zircon is a mineral and is the precursor of  zirconium dioxide which is found in nature. Through a complex process of chemical and structural changes, zircon is transformed into zirconium which is a metal close to titanium. Zirconium is further modified by a unique oxidation process into the dioxide of zirconium also called zirconium oxide (ZrO2) or zirconia. Zirconium dioxide is classified as a ceramic. Since this material is nonmetallic it does not conduct electricity or interfere with the body’s own energy systems (meridians), its use as a bioceramic implant helps eliminate concerns about health issues related to the long-term use of metals in the mouth. With a growing concern for the problems related to metallic substances in the mouth and their potential impact on the immune systems, ceramic dental implants virtually eliminate the negative effects found with titanium implants.

Metal free dental implants look and feel like real teeth

The white coloring of the material used in metal free dental implants has many advantages over the gray colored material used for titanium, creating much more natural looking results. With a ceramic dental implant it is possible for patients to enjoy the feel and functionality of firmly anchored teeth, without having to resort to the inconvenience and embarrassment of conventional dentures. In addition, a ceramic implant coupled with full contour ceramic crowns creates a beautiful restoration that is extremely stable and strong, and capable of withstanding the extreme environment of the mouth for quite literally — decades.

Patients who seek out non-metallic dental implants are often looking for a holistic approach to dentistry

People who prefer going to holistic dentists naturally favor mercury-free and metal-free dental procedures. Many don’t want metals and metal alloys in their mouth because of the potential for toxins, corrosion and the harmful effects they have on the immune system.

Metal free dental implants are very resistant to corrosion

The term “bioceramics” applies to a wide range of materials that, when compared to traditionally used metal implants, are actually harder and have higher temperature resistance, strength, lower density and excellent resistance to corrosion. These properties make bioceramics like zirconia invaluable for use in the oral environment where high temperature, corrosion, extreme pressure and constant abrasion are ever present. Also, ceramic dental implants have high resistance to fracture and heat, and have been proven to be as strong if not stronger than titanium.

Metal free dental implants offer superior stability and are highly biocompatible

Since the implant is anchored directly into the jaw it is naturally assimilated into the bone to give firm support to the artificial replacement that it is built to hold. Due to its nonmetallic construction the ceramic dental implant does not interfere with the body’s immune or meridian systems and therefore lessens the potential for rejection or other systemic or immunological health problems.

Metal free dental implants resist oral inflammation

Another added benefit of zirconium implants has to do with how well the gums react to the material following surgery, lessening incidents of gum disease, high inflammation and implant failure. Whereas titanium products tend to create lingering and unpleasant complications including gum disease and inflammation, which is likely caused by the free radicals present in the metallic materials.

Ceramics reduce incidents of plaque

And finally, the long-term health benefits presented by ceramic implants include its proven ability to resist plaque build-up, making it easier for patients to care for their implant teeth and sustain good oral hygiene. Plaque accumulation leads to higher bacterial counts in the mouth and ultimately to high levels of toxins and inflammation.

Whether you’re concerned about potential complications presented by having metals in the mouth or if you are simply looking for a more natural result, ceramic dental implants are a great alternative to titanium dental implants. Holistic dentists tend to offer ceramic dental implants to their patients precisely because they support a metal-free philosophy.

With the support of Wichita State University AEGD Program, its Director Dr. Dexter Woods and Mr. James Francis President of Z-systems USA, Dr. Noumbissi just completed the first ever metal-free dental implantology course in Kansas at Wichita State University. Eight residents, four faculty members and five private practice dentists attended. The two-day program started by introducing the participants to zirconium dioxide (zirconia) as a dental implant material. The properties, characteristics and benefits of zirconium which is a bioceramic were presented and discussed. Through multiple real case scenario presentations and discussions the participants were allowed to learn and practice how to identify, select and treatment plan patients who need to have their teeth replaced with ceramic dental implants. On the second day we had a live surgery demonstration on a patient which was performed by Dr. Noumbissi. During the live demonstration most of the concepts, techniques and considerations discussed prior were demonstrated in real time.

“Can I Be Allergic to Titanium Dental Implants?”

Discover the Links Between Metal Allergies and Dental Implants

By far, the most commonly implanted metals used in orthopedic and dental restoration devices are cobalt/chrome, stainless steel and titanium. Virtually all implants are alloys, meaning they are a combination of several different metals. The base metals (iron, nickel, lead, zinc and copper) are found in the highest quantities, but smaller amounts of other metals are also found in the implant. Considering that roughly ten to fifteen percent of the population experiences some form of allergic reaction to metal it is important to consider alternatives to metal implants.

Why All the Fuss about Metal Allergies?

An allergic reaction is a response of the body’s immune system when it detects an invasion of foreign substances, whether living or non-living. Allergic responses can range from a mild rash to death from a multi-system shutdown known as anaphylaxis. A person can become allergic to virtually anything, anywhere and anytime, including metals.

Environmental exposures to metals include; joint replacement, dental implants, dental restorations, jewelry, body piercings and even mobile phones. Traditionally nickel, cobalt and chromium have been the most prevalently reported contact allergens; however gold and palladium (primarily alloys that contain more than one metal) have drawn more attention recently. In the United States, studies show that the prevalence of nickel allergy is on the rise (likely due to the growing popularity of body piercings). Metal allergy is also being reported in association with certain device failures following surgical placement such as stents into coronary (heart) blood vessels, hip and knee prostheses, as well as dental and other implants.

Metal Dental Implants – originally the only choice

Metal dental implants were originally made out of commercially pure titanium or titanium alloy, providing the only option for anyone wishing to undergo implant tooth replacement. One aspect of titanium and titanium alloys is that they are generally considered ‘osteophilic’ (bone-friendly) and therefore considered to be biocompatible, providing a clear improvement over dentures and bridges. With a growing body of evidence to the contrary provided by researchers and patients alike, we now know that placing metallic dental implants and other restorative devices can potentially provoke allergic reactions and implant failure. One study involving 1,500 patients helped to drive the fact home when it demonstrated that titanium allergy could be clearly detected in dental implant patients. A notably higher risk of positive allergic reaction was found in patients whose implants failed for no other known reason other than that they had a higher incidence of allergic reaction.

Worst Case Scenario – Autoimmune Disorders

The most significant symptom which can cause the most severe problem is ‘chronic fatigue’. Muscle pain and chronic fatigue presenting without any known cause are the more serious symptoms associated with an allergy to metals. Unfortunately, since people don’t usually link overall fatigue with an immune disorder stemming from a metal implant they can suffer from this type of reaction for months or years before seeking help.

Autoimmune Disorders on the Rise

Between 15 and 25 million Americans are reportedly affected every year by one autoimmune disorder or another.  When you realize that an allergic reaction is actually the immune system turning on itself in a state of hyperactivity of the immune system then you can begin to see the correlation between autoimmune disorders and allergies, and doctors are now beginning to realize that allergies are quite often a precursor to autoimmune disease.

A growing list of health problems are suspected to be related to metal allergies potentially instrumental in the onslaught of autoimmune diseases such as Chronic Fatigue Syndrome, Psoriasis, and Scleroderma, Lupus, Rheumatoid arthritis, type I diabetes, Multiple Sclerosis, Hashimoto’s thyroiditis, Guillain-Barre syndrome, and others.  With this alarming rise in autoimmune diseases and the suspicion of a correlation between metal allergies and a weakening immune system it only makes sense to take whatever steps we can to ensure that our patients are biocompatible with an implant before allowing any substance or material to be permanently affixed into the mouth.

The Better Alternative That Can Last a Lifetime

Today, ceramic dental implants are considered to be the best and safest alternative to metal implants. The advantage of these implants is that they are ceramic, they are made from zirconium oxide also called zirconia and thus there is no concern of corrosion, allergic reaction or electronic interference. Overall qualities of ceramic dental implants include;

Biocompatibility: the zirconium used in the manufacture of ceramic dental implants is an inert material with very low allergic potential.
Strength: The strength of the dental implant is exceptional compared to other metal implants.
Metal-free: no corrosion, no galvanism effect, no metallic taste, no electronic disturbances and no Gum irritation.                                             Hygienic: Oral plaque and tartar do not accumulate on the surface of zirconium imlpants, therefore they remain clean and allow for a healthy environment around the implant bone and soft tissue.

Allergy Testing – An Important Part of the Whole

Our goal is to treat the whole person through the use of safe, natural and painless methods. Our innovative approach to dental care focuses on the health and wellness of the mouth in relation to the whole body, including identifying and treating issues pertaining to metal allergies and autoimmune disorders. We only recommend products that we know to be safe and that will provide the most positive, lasting results for our patients, such as ceramic dental implants. To learn more call to schedule your free personal consultation today.

The Question of Radiation in Dental Ceramics

It may be surprising that one of the ‘risks’ associated with Zirconium based implants is radioactivity. But what does the research say, and is there really any risk to patients? The truth is that Zirconium just like aluminium and many other commonly used materials can contain a certain number of radioactive isotopes, which in extreme cases can increase the chance of oral cancers. However, oral implants are produced from a highly purified and stabilized form of Zirconium also called zirconia or zirconium dioxide which contains extremely low radiation emission levels. Furthermore all manufacturers of zirconia dental implants are required to provide a declaration of radioactivity for their zirconium based dental products. Therefore all zirconia products and materials are not created equal, because the quality and safety of each lies in the the processing of the raw material zirconium.

The Radioactivity of Commercially Available Zirconia Powders

Zirconium compounds are refined from naturally occurring ores, notably zircon, which usually contain trace amounts of other elements depending upon the source of the original ore. In particular, zirconia typically contains trace amounts of radionuclides. As a consequence there were some concerns about the use of zirconia ceramics as implant materials.

In 1992 the question of radioactive ceramics was officially addressed by Anusavice KJ in an article titled ‘Degradability of dental ceramics’ which observed in part that … “The degradation of dental ceramics generally occurs because of mechanical forces or chemical attack. The possible physiological side-effects of ceramics are their tendency to abrade opposing dental structures, the emission of radiation from radioactive components…”

However alarming that may sound further research indicated that the radiation emitted by a dental ceramic powder (3 mol% Y2O3-ZrO2) was the same order of magnitude as alumina powder, both of which were several orders of magnitude less than that typically measured for water, milk, vegetables and meat (based on European standards). The radioactivity of zirconia femoral heads (Y-TZP artificial hip joints) for example, has been shown to be similar to that of alumina and cobalt-chrome. The radiation dose of each material was recorded at that time to be well below European radiation limits specified for general external exposure of the human body and also for local internal exposure of organs and tissue, and was well recognized as no more than the ambient radiation of environmental surroundings.

In another similar study, radiation levels of several commercially available zirconia powders commonly used to manufacture implants in Australia (Nilcra Ceramics, Melbourne) were declared to be minimal and well below acceptable limits. The Radiation Health Committee of the National Health and Medical Research Council of Australia now consider that magnesia partially stabilized zirconia artificial hip joints made from these powders pose “very little hazard to surrounding tissue”.

The main raw material for the manufacture of zirconium dioxide (zirconia) in the US is the mineral zircon silicate (ZrSiO4) which is translated to a higher form of purity zirconium dioxide (ZrO2) when melted with coke and lime. Since extremely pure initial products must be used for the production of high-performance ceramics used in dental implants, special synthesis methods have been developed specifically for this product; a process that works to create the strongest, most durable dental ceramic product available today.

Radiation Absorption

Research has shown that in a dense ceramic almost all radiation is absorbed within the bulk of the material. In the case of artificial hip joints, any radiation from the femoral head is absorbed primarily by the surrounding artificial materials.

From these tests and others, it is widely recognized in the medical implant field that the actual radiation risk of zirconia ceramics is negligible, certainly no more than that of alumina – and consistent with the level of radiation found to occur naturally in healthy environments.

The Benefits of Zirconium Implants and Dental Ceramics

Overall, Zirconia (zirconium oxide) implants are valued by dentists and patients alike for being highly resistant to corrosion and superior to other available implant options such as titanium, both as related to biocompatibility and resultant color. They are ideal for those patients whose immune systems do not accept titanium implants and for patients who may have allergic reactions to metals. Zirconia implants are far more durable with less risk of breakage and is capable of holding up to the drastic changes in temperature and chemistry found in the oral environment. Being bright white in color, zirconia implants have a definite advantage or aesthetic value over titanium dental implants by eliminating the possibility of corrosion and the unsightly grey appearance that titanium exhibits.

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Resources:

Is There A Renewed Trend of Radioactive Compounds In Dental Materials? — Ulf Bengtsson, 2000-01-01

Abstracted from Ph.D Thesis “Application of Transformation-Toughened Zirconia Ceramics as Bioceramics”, University of New South Wales, Australia, 1995.

Anusavice KJ. Degradability of dental ceramics. Adv Dent Res 1992 Sep 6:82-9

What are the Benefits of Ceramic Dental Implants?

Well over 100 million Americans suffer some form tooth loss, and today ceramic dental implants represent the most aesthetically pleasing option available for tooth replacement. Ceramic implants are comfortable for our patients, and due to their all-white color they present the most natural looking results. Dental implants are the better alternative to bridges, partials or dentures (find out why ceramic implants are better than bridges here) and most importantly; ceramic dental implants perform just like natural teeth.

When teeth are removed or lost due to trauma or infection the underlying bone is no longer used, resulting in a weakened jaw and bone loss. This makes it difficult to smile, chew and do other things most of us take for granted. Furthermore teeth next to the lost tooth/teeth shift and and the opposing one(s)  drift into the spaces left by missing teeth. These ultimately lead to malocclusion, jaw collapse, jaw muscle pain and even chronic headaches. Dental implants provide the same function as the natural tooth root which they replace, including stimulating the bone in the most natural way possible and maintaining adjacent and opposing teeth in their place. Ceramic dental implants prevent bone deterioration and improve a patient’s ability to chew food normally.

Dental implants can last a lifetime and are placed directly into the bone where the teeth are missing. They do not adversely affect the adjacent healthy teeth as do traditional bridges. Implants bond to the jawbone and become part of it – making a connection as strong as a natural tooth root.

Some of the benefits of ceramic dental implants:

• Improve one’s ability to bite and chew
• Function exactly like natural teeth
• Do not interfere with adjacent teeth
• Provide a more youthful appearance to the face and jaw line
• Eliminate bone deterioration that can occur with tooth loss
• Do not cause unsightly metal coloring around the gums
• Are metal free and do not corrode or breakdown in the oral environment
• Easy to keep clean because they do not attract nor accumulate bacteria-loving plaque
• Do not conduct electricity or interfere with the body’s meridian energy pathways
• Provides stability without the need for messy adhesives

Whether you’re concerned about metals in the mouth or prefer to have natural looking teeth, ceramic dental implants provide the best alternative to titanium dental implants.

For more information or a free consultation, please give us a call today: 301-880-1410

Metal-Free Dental Implants vs. Dental Bridges

The science of ceramic, metal-free dental implants provides a comfortable and natural alternative to bridges for patients who have suffered tooth loss. Metal-free dental implants are made of the ceramic component of zirconium also called zirconium oxide or zirconia. Due to zirconia’s physical and optical properties, metal-free implants are all-white in color , highly attractive in appearance,  and look and feel like natural teeth so much so that you might forget that you ever lost a tooth (for more information about the cosmetics of metal-free dental implants, please read The Cosmetics of Ceramic Dental Implants).

What’s the Difference Between Dental Implants and Bridges?

A conventional dental bridge can be made with a metal framework or entirely from porcelain or zirconia. However whether its metal based or ceramic, it is created by using adjacent teeth to support a pontic, or fake tooth. In this way, otherwise healthy teeth are often ground down and crowned (or “capped”) to facilitate a bridge to span the space where teeth are missing. So what is the difference between a bridge and a dental implant? A dental implant is applied directly into the jawbone mimicking the tooth’s natural structure without touching the surrounding teeth. An even better method of tooth replacement is by using zirconia implants therefore taking advantage of its metal-free and extremely stable physical properties. Zirconia dental implants do not corrode or breakdown when in contact with oral fluids, furthermore little to no plaque (tartar) accumulate on their surface.

How Long do Dental Implants and Bridges Last?

FAQ About Dental Bridges:

Most dental bridges last from 5-10 years before needing to be replaced. A bridge relies on the adjacent teeth and on the bridge’s structure for support. Surrounding teeth lose their strength due to being ground down to support a bridge and are susceptible to decay and even fracture due to loss of enamel and tooth structure in the process.

FAQ About Metal-Free Dental Implants:

Metal-free dental implants can last a lifetime and are placed directly into the bone where the teeth are missing. They do not adversely affect the adjacent healthy teeth, do not corrode or conduct low level electrical currents in the oral cavity. These low level electrical currents also called galvanic currents will lead to events ranging from weakening of conventional metal implants to the death of bone cells around implants;  this eventually leads to implant loosening and failure. Zirconia implants bond to the jaw bone and become part of it without affecting it – making a connection often stronger than a natural tooth root.

Do Bridges and Metal-Free Implants Cause Bone Loss?

Dental implants act as substitute tooth roots, providing the same function as natural tooth roots including stimulating the bone in the most natural way possible.  When teeth are removed or lost due to trauma or infection the underlying bone is no longer used, frequently resulting in a weakened jaw and bone loss. This makes it difficult to smile, chew and do other things most of us take for granted.

FAQ About Dental Bridges:

When teeth are lost or extracted, the bone that previously supported those teeth no longer serves a purpose and begins to deteriorate, or ‘resorb’. When a bridge is used to connect two teeth, normal pressure is not applied on the jawbone in such a way that the bone is stimulated as it would be in a healthy mouth, leading to bone loss in the area where the tooth was lost. Eventually the bone loss spreads to the supporting teeth of the bridge which over time gets loose, fractures and/or fails.

FAQ About Metal-Free Dental Implants:

Just like metal (titanium) implants, replacing teeth with metal-free dental implants involve placing an artificial root made of zirconia back into areas where there are no teeth. This results in renewed stimulation of the bone in the jaw preventing long term bone loss, thereby preserving and strengthening the structure of the jaw.

Not only do dental implants sit securely in the jaw and look like natural teeth, they also offer superior durability and outstanding aesthetics. Implants of a variety of materials have been used successfully for about 40 years and the latest generation of ceramic implant systems made of zirconium oxide (zirconia) take the science of dental implants to the next level.

Are Dental Bridges or Ceramic Implants Easier to Clean?

Caring for dental implants is very much like caring for natural teeth by following standard oral health care measure such as brushing and flossing.

FAQ About Dental Bridges:

Flossing bridges is not an easy task and requires time, patience and consistency making it difficult to follow routine everyday oral hygiene which can leave the underlying natural tooth structure at risk of decay and gum disease. Almost invariably over time decay occurs under supporting crowns of the bridge leading to the need for root canal treatment or tooth loss altogether.

FAQ About Metal-Free Dental Implants:

Individual dental implants allow easier access between teeth making it possible for patients to resume normal dental care. Furthermore zirconia dental do not collect plaque around them allowing for healthier gums and underlying bone.

Should You Choose a Metal-Free Dental Implant or a Bridge?

The bottom line for most people who have experienced tooth loss is that dental implants are a better solution. Implants are the closest thing possible to natural teeth, are fixed in place and offer a healthy alternative for oral and bone health, plus they support general well-being. Patients, who have metal-free dental implants a less likely todevelop metal sensitivity over time, remark that they look better, feel better and are more confident.

On Friday May 18 and Saturday May 19, 2012 Dr. Noumbissi was one of two lecturers/instructors at two zirconia implantology certification courses in San Francisco and Seattle respectively. Both courses were under the patronage of the the American Institute of Implant Dentistry(A.I.I.D) and supported by Z-systems USA.

A total of sixteen dentists participated and were certified in treatment planning and placement of zirconia dental implants.  The physical, aesthetic and biologic properties of zirconia as a dental material were presented and discussed. Among many other important topics presented was the superior stability of zirconia implants in the oral environment and their ability to resist corrosion.Advanced treatment planning methods utilizing 3D dental imaging and interactive treatment planning software were presented with particular emphasis on the placement of Zirconia/ceramic dental implants.

Clinical cases were presented and discussed in a variety of clinical scenarios ranging from the replacement of single teeth to multiple teeth and full arch reconstruction.   Each session ended with two hours of hands-on training with the  placement of actual zirconia implants on artificial jaws.

Dr. Noumbissi with Seattle Course Attendees