Hello, I have a cavity in each o f my lower wisdom teeth at the gumline. Found a dentist that will fill them, I am 58 years old and would like it done?

Infection. A cavity is an infection that requires treatment. Not being able to examine you, can only generalize. Treatment choices are probably either removing decay and placing fillings or doing extractions. Discuss pros and cons with the Dentist, and follow his/her recommendation.