Current Policy Statement. Health Net, Inc. considers high intensity focused ultrasound treatment (HIFU), (i.e. Sonablate 500 and Ablatherm HIFU) for prostate cancer investigational because the. long-term safety and efficacy has not been established in controlled clinical trials.
1 However, a retainer is usually included in the overall braces fee, so there is no additional charge for the first set of retainers -- and some orthodontists include one or two replacements in their standard braces package. 2  If not included, replacement retainers can cost $70-$250 for one or $140-$500 or more for a set.
1 Vivera clear plastic retainers by Invisalign have an annual fee of $300-$750, for a new set of identical retainers delivered every three months. 2  Vivera retainers can be used by people whose teeth were straightened by conventional braces as well as those who used Invisalign's series of clear plastic aligner trays.