When you think about allergies, the first thought that pops into your mind is probably seasonal pollen or food allergies. However, one allergy often overlooked when it comes to dental treatment is metal allergies or sensitivities.
You've noticed when you walk through the jewelry section in a department store; certain items are clearly marked "nickel free" or "sensitive." The truth is that some metals cause people to develop a tissue irritation that prevents them from wearing certain kinds of jewelry. The skin develops an itchy rash in most cases.
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The same is to be said for dental fillings. Gingival sensitivity and irritation can develop from metal alloys being used to treat tooth decay, or orthodontic work. The gums become inflamed until the appliances are replaced with something different. Relief typically comes within the next month of having the metal dental appliance removed from the mouth. (1)
Old-fashioned amalgam fillings contain a metal alloy mixture composed of mercury, silver and tin. For patients who are sensitive to certain types of metal such as tin, it may be a wise option to consider having their dental restorations completed with a tooth-colored composite material.
Composite fillings are metal-free and made to match the shade of the teeth. They appear more natural when smiling, talking and laughing. Because they are not made of metal they do not tarnish or darken over time as amalgam fillings do. Tooth colored fillings do not leak out discoloration into the enamel like amalgam fillings sometimes do. This keeps smiles brighter and more beautiful for a longer period of time.
Another difference in the two types of fillings is that amalgam fillings require more tooth structure to be removed in order for the filling to be placed. They are held in place by the tooth structure. However, composite fillings bond directly to the tooth, requiring minimal preparation. This allows composite dental treatments to be used in a wider variety of areas and make less of an impact on the structure of the tooth.
Occasional tooth sensitivity can occur when a filling is large enough or placed near a nerve. For patients with amalgam fillings, this sensitivity can be compounded. When cold or hot drinks enter into the mouth, the metal filling conducts the temperature and radiates it through the tooth until the temperature has worn off. This is not the case with composite fillings. Tooth colored fillings are a poor conductor of temperatures, making the teeth more comfortable on a routine basis.
The general public is becoming more aware of and educated on the impact of mercury containing silver fillings. While silver fillings are approved for us by the ADA and have been in use for over a hundred years, having the option of metal free composite fillings gives the public an option in choosing what type of dental treatment they receive. Composite fillings are by far, the safest and most comfortable alternative.
1. Tomka M, Machovcová A, Pelclová D, Petanová J, Arenbergerová M, Procházková J.; Orofacial granulomatosis associated with hypersensitivity to dental amalgam.; Oral Surg Oral Med Oral Pathol Oral Radiol Endod.; 2011 Sep;112(3):335-41.
Black Friday DEWALT Bare-Tool DW059B 1/2-Inch 18-Volt Cordless Impact Wrench (Tool Only, No Battery) 2011 Deals
Nov 20, 2011 23:01:07
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Black Friday DEWALT Bare-Tool DW059B 1/2-Inch 18-Volt Cordless Impact Wrench (Tool Only, No Battery) Feature
- 300 ft-lbs of maximum torque,1,650 rpm/2,600 bpm for fast application speed
- Preferred rocker switch design for fast and easy fastening
- Comfort grip provides maximum comfort
- Durable magnesium gear case, all metal transmission, heavy-duty impacting mechanism directs torque to fastener without kickback
- Tool only (battery not included)
Black Friday DEWALT Bare-Tool DW059B 1/2-Inch 18-Volt Cordless Impact Wrench (Tool Only, No Battery) Overview
Delivering 0-1650 RPM and 0-2600 BPM, DeWalt's DW059 cordless impact wrench lets you handle a wide range of heavy-duty fastening and loosening applications quickly and easily. The heavy-duty impact mechanism of the DeWalt DW059 directs 300 ft-lbs of maximum torque to the fastener without kickback. This cordless impact wrench is capable of performing a wide range of fastening applications, like roofs and wall applications, metal to metal application, metal to wood applications, light-duty fastening applications, and more. The textured, anti-slip grip of the DeWalt DW059 reduces user fatigue and discomfort. The durability of this impact wrench tool is further ensured by the magnesium gear case and all-metal transmission.SAVE NOW on Black Friday offers below!
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