It is very common to get wisdom toothaches. Wisdom teeth normally begin to develop as a young teen, and attempt to erupt around 17-18 years old.
Most people don't have enough room for them, but if they erupt into place normally, they can sometimes be kept well into adulthood and possibly indefinitely. Also, if a person has teeth removed for orthodontics, such as the 4 first premolars, then often times you will have enough room for the wisdom teeth to erupt into place.
IMPACTED WISDOM TEETH:
When people don't have enough space, wisdom teeth will often get impacted behind the existing second molars.
Also, when a tooth is partially erupted, this is a most commonly when people get wisdom toothaches. It is easy for particles and bacteria to get under the gum around the tooth, but virtually impossible to clean, which leads to swelling and infections.
The most commonly recommended and usually the best treatment for a wisdom toothache is to get it removed. People usually don't want to hear that, and it can usually be temporarily treated with antibiotics and pain medication, but until the tooth is removed it will likely become a chronic issue and keep causing problems until it is removed.
Luckily wisdom teeth don't grow back, so it's best to remove it, and any others generally at the same time.
PROS OF REMOVAL:
The problem will be solved, and after things have healed up it will appear as if nothing was ever there. Visit our oral surgery page to read more about removal of wisdom teeth.
Also, it is rare when wisdom teeth are used to anchor bridges or partials (to help replace missing teeth), but if they are impacted, they aren't going to come in anyway and thus will not be of any use to you.
CONS OF REMOVAL:
The obvious con is going through the procedure and the discomfort afterwards. You should be sufficiently numb during the procedure, so that shouldn't hurt, but there likely will be some level of discomfort afterwards.
In certain cases there are risks of nerve damage or sinus issues, but that can be determined by your dentist and discussed prior to the procedure.