Some medicines, tricyclic antidepressants and antimalarials can also cause darkening of your gums The nastiest is the effect of acute necrotising periodontitis (sometimes known as trench mouth) which is advanced gum disease and the black colour is the result of dead tissue
The cost of replacing an airbag outright can be several hundred dollars, although it once again depends partially upon the exact make and model of the car that you're working with. Expect to pay on the order of $1000 to $1500 per airbag to be replaced. Number 3 -- Airbag Resetting. If you've been in an accident, and the airbags themselves have become deployed, you'll have to set them back up in order to be able to drive again.
Air conditioner replacement costs often depend on the SEER, or the seasonal energy-efficiency ratio, of the unit. A unit with a low SEER rating of 13 can run you around $2,000, while a higher rating of 17 can cost more than $5,000.Air conditioner prices also depend on the installation costs, so you'll need to work with someone who has experience with HVAC systems.r you might discover that your contractor can replace the ducts or seal ducts for less than $100. While the contractor is there, get an air conditioner estimate. Anyone who installs air conditioner units can give you an estimate as to replacement costs.