The mini dental implants the Dr Roeder put in did not last for more than 4 years. When I complained that they were loose he did not try to fix them! Each time I would go he would just pull out the implant and throw it away. He charged me over $1800 each and I had 4 of them! I would never go to him again. He never offered a full or partial refund and his procedure cost me thousands of dollars. Beware!