1.
Amalgam ( silver fillings) is produced by mixing mercury along with silver, tin, copper, and zinc. Even though mercury is a toxic material when bounded to other metals it becomes stable and thus can be used in dental applications. The addition of Silver provides strength, Tin for workability, Copper for corrosion resistance and Zinc to prevent oxidation. One of the advantages of using silver fillings as a dental material is its durability. These fillings are able to last 10-15 years, which usually is much longer than other types of tooth fillings. The strength of this filling is strong enough to resist wear due to chewing forces. This is especially seen when the filling has good bulk strength. However it could be easily chipped on the edges. Therefore it can be said that this filling has good biocompatibility. The disadvantages of silver fillings is when it comes to aesthetics. The silver color of the fillings does not match the appearance of the teeth making it not appealing to the eye. In addition the filling can cause discoloration to the surrounding teeth by making them appear a light shade of grey. When drinking cold or hot liquids the teeth can expand or contract. The filling will expand and contract as well making the filling more likely to crack. Finally a few amount people may have allergic reactions to the mercury found in amalgam.
Tooth colored composites are a mixture of submicron glass filters and acrylic that form a tooth colored restoration. The main advantage of composites are seen when mentioning aesthetics. The color of the fillings can be matched to that of the tooth. This is why they are used in the anterior teeth. A unique feature of this filling is its ability to chemically bond to the tooth struct...
... middle of paper ...
...der is the compressive strength. This is important because most of the mastication forces act upon compression. You can use this test to see which dental material is able to resist the most occlusal forces. Another property to consider is called flexural strength. This is defined as the ability of a material to bend before it breaks. It is important to have a high flexural strength when making dental materials because the materials must be able to be repeatedly bent under the action of chewing.
To conclude an ideal dental material will be required to consider both aesthetic and functional properties. The functional properties include having high elasiticity , strength, high tensile strength, high compressive strength, and high flexural strength. Along with these properties it is important for the material to be nontoxic and biocompatible with the oral cavity.
Afshar H, Jafari A, Khami M, et al. Evaluation of Microleakage in Composite-Composite and Amalgam-Composite Interfaces in Tooth with Preventive Resin Restoration. Journal of Dentistry 2012; 9(2):128-34.
The article Poor Teeth was written by Sarah Smarsh with the goal in mind being to shed light on the issue between upper and lower class society in a particularly concrete way. Teeth and dental health are an easy thing for people to imagine in their head because everyone has a set whether they’re white and shiny or black and rotted. This makes it easy to draw a comparison between people that care for their teeth and those who don’t. However, access to dental knowledge and services which the lower class often times doesn’t have is very different between the poor and the rich. While the rich stroll through life showing off their perfect glossy white rows of teeth, there are less privileged people out there with barren mouths whose weak pale gums
Ceramics are most commonly used in dental applications as restorative materials for crowns, cements and dentures.
Dr. Gary Silva and his team are highly trained and experienced in providing restorations for all sorts of dental issues. We offer complete and partial dentures, tooth-colored fillings, crowns, bridges, and more. Dr. Silva’s unique background gave him real restorative experience early in his career. For more than 20 years, Dr. Silva has been offering patients the chance to gain a beautiful, functional smile with his restorative dentistry.
Dentistry is a health science that includes the study and application of measures designed to prevent damage of the oral structures and the use of clinical procedures that that restore the normal masticatory function of teeth and esthetics, correction of speech resulting from loss of natural teeth, satisfaction and comfort of the patient, preservation of alveolar bone and tempromandibular joints. Other goals are to relief pain, treatment of a disease and maintaining the restoration for a long time in the denture without distortion or fracture.
Improper nutrition and misbalance in our body may be the causes for tooth decay. Always pay attention to your nutrition when your teeth are considered, instead of choosing fluoride or dentistry. Our health can also be in danger when fluoride is used, even though the main reason for using fluoride is to make the teeth stronger. According to a recent study, mental disabilities are often made more difficult with the usage of fluoride. Among fluoride, mercury and arsenic are also dangerous in cases of autism
1) Define the purpose of dental indices, such as DMF-T, DMF-S, Gingival Inflammation Index and Plaque Index.
Dental carries is one of the most common oral diseases in the world, and it often goes untreated due to the expense of treatment. According to the World Health Organization (WHO) 60 to 90 percent of school aged children throughout the world suffer from untreated dental carries. Ethnic minorities, the poor, the elderly, and those who are mentally and/or physically disabled are other disparities who also suffer from untreated dental caries (Alcorn & Rogo; 2012). Looking for a way to solve the epidemic of dental caries by providing affordable treatment, silver diamine fluoride (SDF), also known as the “silver fluoride bullet,” was created. Claiming to be both affordable and effective, SDF could be the answer to low cost carries treatment the world has been searching for. The purpose of this paper is to research the efficacy of silver diamine fluoride in comparison to sodium fluoride varnish. Our PICO question is: In a patient with dentinal caries, will the use of silver diamine fluoride compared to sodium fluoride varnish, be more effective at arresting caries?
Denture teeth can be made of acrylic poly(methyl methacrylate) (PMMA) or composite resins. PMMA is a polymer - a material made the from joining of methyl methacrylate monomers. Properties of PMMA include resistance to abrasion, chemical stability and a high boiling point. (Jun Shen et al. 2011). However, weak flexure and impact strength of PMMA are of concern as they account for denture failure. (Bolayir G, Boztug A and Soygun K. 2013). Composite denture teeth are made of a three distinct phases - filler, matrix and coupling agents. Out of the types of composite teeth available, nano-filled composite teeth are preferred. Composite teeth have a PMMA coating around the tooth and a high content of filler particles. This gives them strength, higher resistance to forces than acrylic teeth and provides compete polymerization due to the PMMA coating. (Anusavice, K. J., Phillips, R. W., Shen, C., & Rawls, H. R, 2012). If the interface between the PMMA denture base and PMMA or composite teeth was weak, the denture will not be able to sustain occlusal forces, making the base-teeth interface, an entity of significance.
I decided to do my research report on dentistry because it is a perfect blend of science and art. It is a science in that you must fully comprehend on the different types of diagnostic and procedures you are doing. It is an art in that you are constantly working with your hands to create a beautiful smile. The impact you make on helping a person achieve an impeccable smile is not one to compare with materialistic things like money or cars. People often mistake dentist as only doing practices when in fact they could do more, like research. I was fortunate enough to have been given the opportunity to interview Dr. Sarah Pham, DDS, a close family friend who practices dentistry in her own private office in Los Angeles, California. Dr. Pham was
Nowadays the practice of dentistry is becoming more challenging and complex because of the information explosion regarding dental materials and equipment, increasing need for continuous professional development and an increasingly litigious society. Hence there has been a paradigm shift towards evidence-based healthcare .
Our analysis revealed that Affinis® had more dimensional stability in comparison to Panasil® and in the Panasil® impression material, the percentage of dimensional change was significant after 168 h. However, dimensional changes in all of the evaluation times were in the American Dental Association (ADA) standard range. Therefore, these materials had acceptable clinical dimensional stability for approximately 168 h. In the current study, impressions were made from stainless steel dies following the ADA specification for impression materials. This provides a protocol that can be easily replicated by others and it is the same as making a clinical
Cosmetic dentistry is a specialized field that deals with improving the aesthetics of teeth and the human face. The teeth are an important part of human beauty. Even minor damage to the teeth, such as breakage or loss can drastically alter the overall appearance of the face. This is where cosmetic dentistry comes in to restore beauty. Cosmetic dentistry has become a highly specialized branch due to various advancements in surgical procedures and diagnostic techniques. Several new materials have also been discovered. These materials are very close to the natural enamel and bone from which teeth are made and are virtually indistinguishable. Cosmetic dentistry is an option in conditions such as teeth loss, gaps between teeth, cracked or chipped teeth, cavities and dental
Growing up I heard many stories from my peers of their experiences at the dentist’s office. It is upsetting to say that most of my visits were vividly terrifying. As a child, the grinding, scratching, and high-pitched twangs of the instruments digging around in my mouth would leave my ears ringing and teeth vibrating every single time. The smell of fluoride and disinfectants permanently infected the air, sending chills through my body the minute I walked in. I quickly learned that latex posses an extremely unappetizing aftertaste. Needless to say, I was not always enthusiastic about going to the dentist’s office and getting braces did not make anything better for me.
The existence of micro-leakage in dental restorations was first identified in scientific research in 19126. In a study done by Harper (1912), air pressure was used to penetrate the surface between an amalgam restoration and cavity preparation7. By applying pressure through a hole in the pulpal floor, Harper could quantify the amount of pressure needed to establish leakage through the emergence of bubbles from the margins of the restoration. Research has come a long way since Harper first recognized micro-leakage. Adaptations of new materials used when placing composite restorations like BondAband, a light-cured glass-ionomer cement has been shown to reduce marginal micro-leakage in posterior restorations8. A decrease in microleakage has also been shown with the use of an ...