Thank you for your question. The implant should not affect your Ultherapy treatment - it is placed deeper than where the treatment will take place. Consult with a board-certified doctor before receiving Ultherapy and raise these concerns with them as well. Best of luck.
Ultherapy does not extend as deep as the plane in which cheek and chin implants are usually placed. In addition, cheek treatment with Ultherapy usually does not go over the area in which the implant lies (the cheekbone nor the chin). It would be prudent, however, to make sure your doctor has a thorough history of your cosmetic procedures including the implants.