...Dental Amalgam 1.Dental Amalgam ● Amalgam: is an alloy of mercury with one or more other metals. ● Dental amalgam alloy: is an alloy that contains solid metals of silver, tin, copper and some times zinc. ● Dental amalgam: is the alloy that results when mercury is combined with the previously mentioned alloys to form a plastic 1.Composition of Dental Amalgam: ●Silver ●Tin ●Copper ●Zinc ●Indium and Palladium ●Mercury 1.Classification of Dental Amalgam Alloys 1. Conventional (Low Copper )Alloy: (a ) 2. Lathe-cut Particles. 3. Spherical Particles (b ) Classification of Dental Amalgam Alloys 1. High copper (a ) alloy: 2. Admix Alloy. 3. Unicompositional alloy. (b ) 1.Silver -Tin Binary System 1.Setting Reactions of Dental Amalgams: 1.Low Copper Alloy: Ag3Sn + Hg Ag2Hg3 + Sn8Hg + Ag3Sn ( ) ( 1) ( 2) ( ) 54%-56% 11-13% 27-35% H g H g 2 1 Setting Reactions of Dentalalloy Amalgams: 1. High copper 1. Admixed alloy 1. Ag3Sn + AgCu + Hg Ag2Hg3 + Sn8Hg + Ag3Sn + AgCu ( )( 1)( 2)( ) 1. Sn8Hg + AgCu Cu6Sn5 + Ag2Hg3 + Ag3Sn ( 2) ( ) ( 1 ) ( ) 1. High copper alloy Setting Reactions of Dental Amalgams: 1. Unicompositional Alloy: Ag3Sn + Cu3Sn + Hg Cu6Sn5 + Ag2Hg3 ( ) ( ) ( ) ( 1) Microstructure of Set Low Copper Amalgam. (Ag3Sn) 2 (Sn8Hg) Void s 1 (Ag2Hg3) Microstructure of Set HighCopper Admixed Amalgam. 1 (Ag2Hg Eutectic3) (Ag3Cu2) (Cu6Sn5) (Ag3Sn) 1.Properties of Dental Amalgam 1.Properties of Dental...
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...Institutionalized Murder MV Courage Pharmakeia or pharmakon? Mercury laced flu shots, dental amalgam, thimerosal, warfarin, digitalis, and pharmaceutical synthetics are considered medicine while natural herbs and essential oils are thought of as mere potions or even sorcery by the FDA and traditional pharmacology business commonly referred to as Big Pharma. Big Pharma, derived from PhRMA-the Pharmaceutical Research and Manufacturers of America, is worth roughly around 300 billion US dollars and wields enormous influence over modern Western medicine, insurance, litigation, government, and health with leverage from huge profits and about 3,000 paid lobbyists. Harvard Business School Professor William George asked, “Is the role of leading large pharmaceutical companies to discover lifesaving drugs or to make money for shareholders through financial engineering?” Pfitzer made a bid to buy AstraZeneca and Valeant Pharmaceuticals International takeover bid for Allergan have monetary gains of lower tax liabilities and another income stream. Biopharmaceutical companies are expensive to run under high risk-only significant profits will guarantee solvency. Clinical trials and drug development are chosen by the significant profit margin and medical breakthrough. For example, aspirin has been a generic drug since 1919 with a cost less than $6.00 for a year supply and may improve survival and reduce the recurrence of some cancers. But running clinical trials to prove or disprove the benefits...
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...Table of Contents Background …………………………………………………………………………..1 The Technology……………………………………………………………………....2 Operations Strategy………………………………………………………. ……….. 3 Cash Flow Statements…………………………………………………………………………….4 Clinical Trial Work Design Process…………………………………………………4 Final Recommendation……………………………………………………………….5 References………………………………… …………………………………………6 Background: Dr. Nicholas Burns, a sole practitioner dentist in a small town in Ontario, is considering the purchase of a new dental laser which allows dentists to perform certain dental treatments without anesthesia. He wondered if the benefits of the new dental laser would justify the expenditure. Dr. Burns knew he should consider whether the technological advantage offered by the new dental laser would improve his office's profitability and the possibility that a different technology may become the standard in the industry. Issue 1: Will Waterlase become a sought after technology? OPERATIONS STRATEGY Analysis 1: Waterlase is a proven technology that provides the patient with a revolutionary treatment. The laser has been approved by Health Canada since 1998 and it main benefits enable better clotting and healing on soft tissues. The reduced bleeding effect will benefit patience on blood thinners. (citation). The laser had an analgesic effect on the tooth and can eliminate the need...
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...http://tih.sagepub.com/subscriptions Reprints: http://www.sagepub.com/journalsReprints.nav Permissions: http://www.sagepub.co.uk/journalsPermissions.nav Citations http://tih.sagepub.com/cgi/content/refs/25/7/463 Downloaded from http://tih.sagepub.com at SAGE Publications on November 9, 2009 Mercury vapor inhalation and its effect on glutathione peroxidase in goldsmiths exposed occupationally K Jayaprakash Toxicology and Industrial Health 25(7) 463–465 ª The Author(s) 2009 Reprints and permission: http://www. sagepub.co.uk/journalsPermission.nav DOI: 10.1177/0748233709106769 tih.sagepub.com Abstract In the gold ornaments manufacturing cottage industries, the gold metal grain dust waste particles are recovered from mercury (Hg) amalgam. The results on air samples from these industries during the recovery process have shown a high prevalence of Hg vapor (42.7 mg/m3). The blood concentration of Hg is elevated (79.1 mg/L) among workers when their blood samples are tested. The Hg toxicity is reflected in the reduction of glutathione peroxidase enzyme activity in RBC (49.317 mg/L of RBC) when compared with the data from control subjects (68.536 mg/L of RBC). These values are statistically significant. This would suggest that the Hg poisoning in goldsmiths is due to exposure. The...
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...Mercury Toxicity Flamesia Starks 06/16/2013 SCI/275 Mercury Toxicity is an environmental problem that most people do not know about and sometimes it is a common household item most use every day. It affects people, animals and other wildlife. Solutions that can be easy and affective if there are used the proper way. It affects humans and wildlife and can put a permanent damage to our body and earth. Mercury Toxicity One of the issues that threaten the community that I live in is Mercury Toxicity. Mercury is a natural metal found throughout the environment. The metal is liquid at room temperature and is easily combined with other metals and it also expands and contracts evenly with temperature. Once Mercury enters and circulates in and out of our atmosphere it ends up at the bottom of our oceans and other water supply. It is persistent because it does not break down, go away or degrade. Mercury is a potent neurotoxin and if put into the body can cause decreased ability to see, hear, talk and even walk. It also causes very dramatic changes to you personality and makes you irritable and confused in most cases. There are many other things it can destroy in the body such as your brain, kidney, and lungs. It only takes a small amount of this metal as in a teaspoon to contaminate over 20 aces of water. So that is it is it is important to plan and stick...
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...The safety of amalgam (silver) fillings has been the subject of heated debate for many years in the field of Dental Science. (6) In the 1830’s, the safety of these fillings was called into question, again in the 1920’s, more recently the 1970’s, and the debate rages today. As a former dental assistant, I chose to have my amalgam fillings removed. This decision was fueled not only by esthetic reasons, but also by articles I read concerning the adverse health effects of mercury in amalgam fillings. An amalgam filling, consists of approximately 50% mercury and is combined with silver, copper, tin and zinc, to form a strong metal substance placed into a prepared tooth that has had a cavity. (6) Amalgam fillings have been used for approximately 160 years, the cost of the material is around...
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...Heather Miller Amalgam vs. Composite Paper Restorative Dentistry II November 3, 2015 Differences of Amalgam and Composite Fillings In Dentistry As dentistry progresses, so does the availability and advancements of the materials used for dental restorations. The two most common materials used for fillings are amalgam and composite. There are both advantages and disadvantages for each of these materials and each clinician has their own preferences for what material they prefer to use on their patients. There are safety measures that are associated with each material based on the chemical properties of both of these materials. Both materials have been around for decades and have their own advantages and disadvantages. In the Dental...
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...Three Ways To Deal With A Child’s Deep Cavity Does your child have a deep cavity that needs to be treated? If so, you may be wondering what the best way to proceed will be. If the cavity is actively causing pain, the need to act will be urgent. That is why it helps to know the options that are available to you to treat the cavity. Dental Fillings A filling will seal up the hole that has formed within the tooth, and prevent all types of bacterial from getting into it and causing more decay to form. The first step to using a dental filling will be to remove all parts of the tooth that have decay. This involves drilling portions of the tooth out before a filling can be put into its place. Your family dentist will use a filling material that...
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...you’ve dreamed of having. Webster, TX dentist Dr. Das provides several ways to restore damaged and missing teeth. Dental restorations can be direct or indirect. Direct restorations like bonding and fillings are applied directly to the tooth in one visit. Indirect restorations are manufactured in the laboratory and placed at a later date. While waiting for...
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...cosmetic dentistry A smile itself gives happiness to a man. A beautiful smile depends upon the teeth inside the mouth. The order or shape of teeth disturbed by accidents or by nature to someone. The word cosmetic dentistry is used to refer to make the appearance of teeth in a better way. It involves bonding, caps, removal of affected teeth and the abnormal structure of gums, teeth whitening, adding or removal of dental materials. Cosmetic dentistry in Dallas had many experienced doctors. Generally it will take twenty one to thirty five days to make a smile beautiful. But in Dallas it will take only seven days. It will save our money and time. They provide a dental bridge in case of missing teeth. In the olden days dental filling or false tooth would be fixed in the material of gold or amalgam. It will make an artificial look and not beautiful. But cosmetic dentists in Dallas use porcelain and a combination of porcelain with some other metals. It resembles the same as original. Whitening is the common treatment in all cosmetic dental...
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...Three Things You Should Know About Tooth Fillings For most people, the first experience they have with dental work will be the simple process of having a cavity filled. But as routine as a trip to the dentist may be for a filling, there are a few things you should know about them. Fillings don't last forever It may be disheartening to go to a dentist only to find that you need a filling replaced, but this is normal. Although it is common for people to think that they should only have a filling replaced when it falls out, the truth is that fillings don't last a lifetime. Sometimes there can be decay that begins to show on the outside edges of the filling, and this will mean that it will need to be taken out, and the tooth refilled. Sometimes your filling can become loose for various reasons, but when your dentist notices this, it will also need to be replaced. By having the filling replaced, it will help to save your tooth from decay....
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...contributing factors to occur. In order to understand the caries process fully we will discuss all of the factors involved. Such factors include: the agent (acidogenic bacteria), the host (the tooth, quality and quantity of saliva, and immune responses) and the environment (the patient’s diet, amount/frequency and kind of food or drink consumed and the intake of fermentable carbohydrates). We will then discuss demineralization and remineralization (the body’s natural repairing of the tooth) and their roles in the caries process. We will also take a look at how caries are diagnosed and detected, what a caries risk assessment is, its factors and how it can be utilized on individual patients for caries prevention. Finally, we will discuss how dental caries is treated at all levels of the caries process. Caries, also known as tooth decay or cavities, is a bacterial infection transmitted primarily through saliva, leading to the destruction of enamel, cementum and dentin. Although caries is an infectious disease of the teeth, it is more accurate to say caries is caused by a shift in oral micro-flora to caries-causing types in response to acidity resulting from metabolism of sugars. (Higham, 2010) Three major factors contribute to the caries process: food or beverages that are consumed (sugary in content), the bacteria in plaque, and your teeth. The simplest way to think of it is that each time you eat there is an acid attack on your teeth. That’s because plaque, a sticky film of...
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...Case study Patient b is a 45 year old white female, she attended the surgery on her own. Her medical history was that she was a regular smoker, smoking 20 cigarettes per day, other than that her medical history was clear, I verbally checked this with the patient before sitting her in the chair. The patients social history was that she lived at home with her husband and three children and she was a full time housewife. The patients dental attendance wasn’t good, this was her first check up appointment in about 10 years, having been to several emergency dental appointments in the meantime. The patient has all permanent dentition excluding the upper left first molar, upper right second molar and both lower third molars which had all previously been extracted. The patients DMFT score is 9, the patient has 4 missing teeth and 5 amalgam restorations there are no obvious signs of decay at this present time. Her history of erosion is low due to the patient having a low intake of acidic drinks and the patients suffers sensitivity around her lower anterior teeth. Her periodontal health is poor with scores of 3 in each quadrant, her oral hygiene status is also poor, the patient has periodontal disease with gross calculus deposits around lower anterior teeth. The GDP has refered the patient on to me the application of fluoride varnish on all molar teeth to arrest/prevent any caries. The GDP would also like me to give the patient oral hygiene instructions to help improve her...
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...Mantesh TABLE OF CONTENTS Cure Tooth Decay Book Description Foreword By Timothy Gallagher D.D.S. President of the Holistic Dental Association Introduction 100% Real Dental Healing Testimonials Leroy from Utah Ms. Steuernol from Alberta , Canada Mike from Ashland , Oregon Pioneering Tooth Cavity Remineralization CHAPTER 1 DENTISTRY'S INABILITY TO CURE CAVITIES Reaffirm Your Choice to Cure Your Cavities The Real Cause of Cavities Remembering Your Connection Fear of the Dentist How Conventional Dentistry Works Micro-organisms Conventional Dentistry’s Losing Battle Against Bacteria The Failure of Conventional Dentistry Chapter 1 References CHAPTER 2 DENTIST WESTON PRICE DISCOVERS THE CURE Lack of Nutrition is the Cause of Physical Degeneration The Healthy People of the Loetschental Valley, Switzerland Modern Swiss were Losing Their Health The Healthy People of the Outer Hebrides Gaelics on Modern Foods are Losing Their Health Genetics and Tooth Decay Aborigines of Australia Nutritive Values of Diets Compared Fat-soluble Vitamins and Activators Mantesh Why Tooth Decay with Modern Civilization? Weston Price's Tooth Decay Curing Protocol Dr. Price's Protocol Summarized Chapter 2 References CHAPTER 3 MAKE YOUR TEETH STRONG WITH FAT-SOLUBLE VITAMINS How Teeth Remineralize 101 Hormones and Tooth Decay Cholesterol The Miracle of Vitamin D Vital Fat-Soluble Vitamin A Cod Liver Oil Heals Cavities Weston Price’s Activator X More Fat-Soluble...
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...Affordable Dental Benefits for You and Your Family Why choose AlwaysCare ONE plus ? • Affordable dental coverage for as low as $19.24 per month • You choose the plan that is right for you! Three dental plan options available to best meet your family’s needs Plus Hearing Savings Plan at no additional cost to you! Material discounts between 30-60% on major name brand hearing instruments and accessories. Battery program with discounts up to 40% off retail pricing. D E N TA L P L A N - O U T L I N E O F BE N E F I T S Freedom of Choice. Choose any dental provider or visit one of over 144,000 participating provider access points in our network and pay even less. Visit www.AlwaysCareBenefits.com for a listing of participating providers. Each plan reimburses for covered procedures up to the scheduled amount in your policy. See page 2 for examples. Benefit Year Maximum. $1,000 per person per benefit year (Applies to all services) Deductible. $50 Annual. Maximum 3 per family (Does not apply to preventive services) Preventive Services. • Routine exams (2 per 12 months) • Prophylaxis (Simple Cleaning) (2 per 12 months) • Full mouth x-ray (1 per 24 months) • Space maintainers to age 16 (1 per 24 months) • Fluoride to age 16 (1 per 12 months) • Bitewing x-rays (max 4 films per 12 months) • Sealants to age 16 (permanent molars, 1 per 36 months) • Adjunctive pre-diagnostic oral cancer screening (max 1 per 12 months for age 40+) Other Services. 12 month waiting period applies. •...
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