Go for a 2nd opinion. Such costly procedure was recommended to me also by the 1st DDS I went to here. After a call to my hometown DDS, who couldn't believe that within a 6-months my perfectly healthy gums, would need to undergo this. He suggest I go for a 2nd opinion which I found from Lake Advanced Dentistry located on Hwy 27/441 in Lady Lake. Their web is
Best dental care in Florida | Lake Advanced Dentistry. This DDS & his team are excellent in every way: working with your insurance, listening & explaining concerns. Most importantly, read his patients' review of their experience there. Good luck.