As required by Chapter 801, Statutes of 1992, the Dental Board of California has prepared this fact sheet to summarize information on the most frequently used restorative dental materials. Information on this fact sheet is intended to encourage discussion between the patient and dentist regarding the selection of dental materials best suited for the patient’s dental needs. It is not intended to be a complete guide to dental materials science.
The most frequently used materials in restorative dentistry are amalgam, composite resin, glass ionomer cement, resin-ionomer cement, porcelain (ceramic), porcelain (fused-to-metal), gold alloys (noble) and nickel or cobalt-chrome (base-metal) alloys. Each material has its own advantages and disadvantages, benefits and risks. These and other relevant factors are compared in the attached matrix titled “Comparisons of Restorative Dental Materials.” A Glossary of Terms” is also attached to assist the reader in understanding the terms used.
The statements made are supported by relevant, credible dental research published mainly between 1993 - 2001. In some cases, where contemporary research is sparse, we have indicated our best perceptions based upon information that predates 1993.
The reader should be aware that the outcome of dental treatment or durability of a restoration is not solely a function of the material from which the restoration was made.
The durability of any restoration is influenced by the dentist’s technique when placing the restoration, the ancillary materials used in the procedure, and the patient’s cooperation during the procedure. Following restoration of the teeth, the longevity of the restoration will be strongly influenced by the patient’s compliance with dental hygiene and home care, their diet and chewing habits.
Both the public and the dental profession are concerned about the safety of dental treatment and any potential health risks that might be associated with the materials used to restore the teeth. All materials commonly used (and listed in this fact sheet) have been shown -- through laboratory and clinical research, as well as through extensive clinical use -- to be safe and effective for the general population. The presence of these materials in the teeth does not cause adverse health problems for the majority of the population. There exists a diversity of various scientific opinions regarding the safety of mercury dental amalgams. The research literature in peer-reviewed scientific journals suggests that otherwise healthy women, children and diabetics are not at increased risk for exposure to mercury from dental amalgams. Although there are various opinions with regard to mercury risk in pregnancy, diabetes, and children, these opinions are not scientifically conclusive and therefore the dentist may want to discuss these opinions with their patients. There is no research evidence that suggests pregnant women, diabetics and children are at increased health risk from dental amalgam fillings in their mouth. A recent study reported in the JADA factors in a reduced tolerance (1/50th of the WHO safe limit) for exposure in calculating the amount of mercury that might be taken in from dental fillings. This level falls below the established safe limits for exposure to a low concentration of mercury or any other released component from a dental restorative material. Thus, while these sub-populations may be perceived to be at increased health risk from exposure to dental restorative materials, the scientific evidence does not support that claim. However, there are individuals who may be susceptible to sensitivity, allergic or adverse reactions to selected materials. As with all dental materials, the risks and benefits should be discussed with the patient, especially with those in susceptible populations.
There are differences between dental materials and the individual elements or components that compose these materials. For example, dental amalgam filling material is composed mainly of mercury (43-54%) and varying percentages of silver, tin, and copper (46-57%). It should be noted that elemental mercury is listed on the Proposition 65 list of known toxins and carcinogens. Like all materials in our environment, each of these elements by themselves is toxic at some level of concentration if they are taken into the body. When they are mixed together, they react chemically to form a crystalline metal alloy. Small amounts of free mercury may be released from amalgam fillings over time and can be detected in bodily fluids and expired air. The important question is whether any free mercury is present in sufficient levels to pose a health risk. Toxicity of any substance is related to dose, and doses of mercury or any other element that may be released from dental amalgam fillings falls far below the established safe levels as stated in the 1999 US Health and Human Service Toxicological Profile for Mercury Update.
All dental restorative materials (as well as all materials that we come in contact with in our daily life) have the potential to elicit allergic reactions in hypersensitive individuals.1 These must be assessed on a case-by-case basis, and susceptible individuals should avoid contact with allergenic materials. Documented reports of allergic reactions to dental amalgam exist (usually manifested by transient skin rashes in individuals who have come into contact with the material), but they are atypical. Documented reports of toxicity to dental amalgam exist, but they are rare. There have been anecdotal reports of toxicity to dental amalgam and as with all dental material risks and benefits of dental amalgam should be discussed with the patient, especially with those in susceptible populations.
Composite resins are the preferred alternative to amalgam in many cases. They have a long history of biocompatibility and safety. Composite resins are composed of a variety of complex inorganic and organic compounds, any of which might provoke allergic response in susceptible individuals. Reports of such sensitivity are atypical. However, there are individuals who may be susceptible to sensitivity, allergic or adverse reactions to composite resin restorations. The risks and benefits of all dental materials should be discussed with the patient, especially with those in susceptible populations.
Other dental materials that have elicited significant concern among dentists are nickel-chromium-beryllium alloys used predominantly for crowns and bridges. Approximately 10% of the female population are alleged to be allergic to nickel.2 The incidence of allergic response to dental restorations made from nickel alloys is surprisingly rare. However, when a patient has a positive history of confirmed nickel allergy, or when such hypersensitivity to dental restorations is suspected, alternative metal alloys may be used. Discussion with the patient of the risks and benefits of these materials is indicated.
1 Dental Amalgam: A scientific review and recommended public health service strategy for research, education and regulation, Dept. of Health and Human Services, Public Health Service, January 1993. 2 Merck Index 1983. Tenth Edition, M Narsha Windhol z, (ed)
THIS NOTICE DESCRIBES HOW HEALTH INFORMATION ABOUT YOU MAY BE USED AND DISCLOSED AND HOW YOU CAN GET ACCESS TO THIS INFORMATION. PLEASE REVIEW IT CAREFULLY. THE PRIVACY OF YOUR HEALTH INFORMATION IS IMPORTANT TO US.
OUR LEGAL DUTY
We are required by applicable federal and state law to maintain the privacy of your health information. We are also required to give you this Notice about our privacy practices, our legal duties, and your rights concerning your health information. We must follow the privacy practices that are described in this Notice while it is in effect.
This Notice takes effect April 14, 2003, and will remain in effect until we replace it. We reserve the right to change our privacy practices and the terms of this Notice at any time, provided such changes are permitted by applicable law. We reserve the right to make the changes in our privacy practices and the new terms of our Notice effective for all health information that we maintain, including health information we created or received before we made the changes. Before we make a significant change in our privacy practices, we will change this Notice and make the new Notice available upon request.
For more information about our privacy practices, or to request a copy of our Notice, please contact us using the information listed on this website.
USES AND DISCLOSURES OF HEALTH INFORMATION
We use and disclose health information about you for treatment, payment, and healthcare operations. For example:
Treatment: We may use or disclose your health information to a physician or other healthcare provider providing treatment to you.
Payment: We may use and disclose your health information to obtain payment for services we provide to you.
Healthcare Operations: We may use and disclose your health information in connection with our healthcare operations. Healthcare operations include quality assessment and improvement activities, reviewing the competence or qualifications of healthcare professionals, evaluating practitioner and provider performance, conducting training programs, accreditation, certification, licensing or credentialing activities.
Your Authorization: In addition to our use of your health information for treatment, payment or healthcare operations, you may give us written authorization to use your health information or to disclose it to anyone for any purpose. If you give us an authorization, you may revoke it in writing at any time. Your revocation will not affect any use or disclosures permitted by your authorization while it was in effect. Unless you give us a written authorization, we cannot use or disclose your health information for any reason except those described in this Notice.
To Your Family and Friends: We must disclose your health information to you as described in the Patient Rights section of this Notice. We may disclose your health information to a family member, friend, or other person to the extent necessary to help with your healthcare or with payment for your healthcare; but only if you agree that we may do so.
Persons Involved In Care: We may use or disclose health information to notify or assist in the notification of (including identifying or locating) a family member, your personal representative or another person responsible for your care, of your location, your general condition, or death. If you are present, then prior to use or disclosure of your health information, we will provide you with an opportunity to object to such uses or disclosures. In the event of your incapacity or emergency circumstances, we will disclose health information based on a determination using our professional judgment disclosing only health information that is directly relevant to the person’s involvement in your healthcare. We will also use our professional judgment and our experience with common practice to make reasonable inferences of your best interest in allowing a person to pick up filled prescriptions, medical supplies, x-rays, or other similar forms of health information.
Marketing Health-Related Services: We will not use your health information for marketing communications without your written authorization.
Required by Law: We may use or disclose your health information when we are required to do so by law.
Abuse or Neglect: We may disclose your health information to appropriate authorities if we reasonably believe that you are a possible victim of abuse, neglect, domestic violence, or the possible victim of other crimes. We may disclose your health information to the extent necessary to avert a serious threat to your health or safety or the health or safety of others.
National Security: We may disclose to military authorities the health information of Armed Forces personnel under certain circumstances. We may disclose to authorized federal officials health information required for lawful intelligence, counterintelligence, and other national security activities. We may disclose to correctional institution or law enforcement official having lawful custody of protected health information of inmate or patient under certain circumstances.
Appointment Reminders: We may use or disclose your health information to provide you with appointment reminders (such as voicemail messages, postcards, or letters).
PATIENT RIGHTS
Access: You have the right to look at or get copies of your health information, with limited exceptions. You may request that we provide copies in a format other than photocopies. We will use the format you request unless we cannot practicably do so. You must make a request in writing to obtain access to your health information. We may charge you a reasonable cost-based fee for expenses such as copies and staff time. If you request an alternative format, we will charge a cost-based fee for providing your health information in that format.
Disclosure Accounting: You have the right to receive a list of instances in which we or our business associates disclosed your health information for purposes, other than treatment, payment, healthcare operations, and certain other activities, but not before April 14, 2003. If you request this accounting more than once in a 12-month period, we may charge you a reasonable, cost-based fee for responding to these additional requests.
Restriction: You have the right to request that we place additional restrictions on our use or disclosure of your health information. We are not required to agree to these additional restrictions, but if we do, we will abide by our agreement, except in an emergency.
Alternative Communication: You have the right to request that we communicate with you about your health information by alternative means or to alternative locations. {You must make your request in writing.} Your request must specify the alternative means or location, and provide satisfactory explanation how payments will be handled under the alternative means or location you request.
Amendment: You have the right to request that we amend your health information. Your request must be in writing, and it must explain why the information should be amended. We may deny your request under certain circumstances.
Electronic Notice: If you receive this Notice on our website or by electronic mail (e-mail), you are entitled to receive this Notice in written form.
QUESTIONS AND COMPLAINTS
If you want more information about our privacy practices or have questions or concerns, please contact us at the address or phone number provided on this website. If you are concerned that we may have violated your privacy rights, you disagree with a decision we made about access to your health information, or in response to a request you made to amend or restrict the use or disclosure of your health information, or to have us communicate with you by alternative means or at alternative locations, you may complain to us using the contact information listed on this website. You also may submit a written complaint to the U.S. Department of Health and Human Services. We will provide you with the address to file your complaint with the U.S. Department of Health and Human Services upon request. We support your right to the privacy of your health information. We will not retaliate in any way if you choose to file a complaint with us or with the U.S.
Department of Health and Human Services. ©2002, 2009 American Dental Association. All Rights Reserved Reproduction and use of this form by dentists and their staff is permitted. Any other use, duplication or distribution of this form by any other party, requires the prior written approval of the American Dental Association. This Form is educational only, does not constitute legal advice, and covers only federal, not state, law (August 14, 2002; April 30, 2009).
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