Whether the teeth can be saved or nor depends upon the degree of mobility which in turn depends upon the bone loss. Your dentist after seeing the X-ray and doing the clinical examination can tell you whether the teeth can be saved or not. You may have to go for the flap surgery with bone graft. It will help you in retaining the teeth. If you want to know more about the gum surgeries you can visit the following link..........http://www.identalhub.com/articlecategory-gum-surgeries-80.aspx