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.
Essix and Hawley appliances are the most frequently used removable retainers. 1  On average, the initial stage of a patient's retention process involved wearing their retainers for 16 hours per day (the range was from 2 to 24 hours), 7 days a week. On average, the initial stage of a patient's retention process involved wearing their retainers for 16 hours per day (the range was from 2 to 24 hours), 7 days a week.