A medical device is an instrument, apparatus, implement, machine, contrivance, implant, in vitro reagent, or other similar or related article, including a component part, or accessory which is:1  recognized in the official National Formulary, or the United States Pharmacopoeia, or any supplement to them, medical device is an instrument, apparatus, implement, machine, contrivance, implant, in vitro reagent, or other similar or related article, including a component part, or accessory which is: 1  recognized in the official National Formulary, or the United States Pharmacopoeia, or any supplement to them,
1 On average, a retainer can cost anywhere from $500 to $2,100 for both the top and bottom. 2  For those that have dental insurance, many policies will cover a portion of the procedure depending on what the deductible, co-pay, etc.3  For example, a patient in Houston, Texas had bonded retainers ordered for a total of $1,400. If braces are not needed, an orthodontist can fit a retainer to fix problems such as an overbite. 2  On average, a retainer can cost anywhere from $500 to $2,100 for both the top and bottom.
1sttim... How much does it cost to replace a railroad ties 70 ft retainer wall that is decomposed and caving out. I bought a home in Long Island,NY that has a 70 ft retainer wall holding up the property on one side.