Mentor , Allergan admit they 've lost track of many patients . Manufacturers had promised to do major 10-year studies . But Jeffrey Kenkel , professor and vice chairman of the Department of Plastic Surgery at the University of Texas , Southwestern Medical School at Dallas and president of the American Society of Aesthetic Plastic Surgery , says the implants are still safe and effective . They're now saying that the data is not there FDA says it has much to consider .
Mentor , Allergan admit they 've lost track of many patients . Manufacturers had promised to do major 10-year studies . They're now saying that the data is not there FDA says it has much to consider .