From the photos, the dents look like medial/lower-pole contour irregularities rather than something that can be diagnosed with certainty online. Common causes after augmentation include thin soft-tissue coverage over the implant, implant edge visibility or folding/rippling, scar capsule or pocket tethering, and sometimes implant position or pocket dissection along the inner lower breast. Even without flexing, the pectoralis muscle, implant pocket, and capsule can all influence how that area looks. At one year, this is best assessed in person by your surgeon, especially if the dents are new, worsening, painful, associated with hardening, or changing your breast shape. Treatment depends on the cause: observation if stable and mild, fat grafting for thin coverage/rippling, or capsule/pocket revision such as capsulorrhaphy or internal support if there is tethering or malposition. An exam can determine whether the issue is implant visibility, capsule contracture, pocket anatomy, or soft-tissue thinning.