Differences in cheek reduction surgery — buccal fat removal, jaw contouring, and masseter botox target different tissue layers

Even with the same desire to achieve a slimmer face, the approach differs completely depending on whether the cause is fat, bone, or muscle. Choosing an unsuitable method may yield no results, or leave irreversible changes.

Reducing fat: Buccal fat removal

This surgery removes a portion of the fat pad (Bichat fat pad) located inside the cheek, relatively emphasizing the cheekbone line. A systematic review by Moura et al. reports that it is indicated for individuals whose chief complaint is round cheeks with a well-proportioned skeletal structure, and achieves visual enhancement of the cheekbones.[1]。In textbooks, it is positioned as "precise sculpting tailored to selected patients".[2]。However, there are precautions to note. Damage to the buccal branch of the facial nerve that runs nearby[3]In addition, Zelken discusses the diagnosis and management of "buccal bulge (cheek fullness) deformity" that occurs after the Treatments[4], and over-removal can lead to sunken cheeks in later years, a difficult-to-reverse change. Rather than "a little while young," it is necessary to determine the amount while anticipating the face's future volume.

Thinning muscle / shaving bone

If jaw prominence is due to muscle (masseter) hypertrophy, botulinum toxin injection can suppress muscle activity and gradually thin it over several months. It is reversible and requires no hospitalization, but repetition is required to maintain results. On the other hand, if the jawline or cheekbone skeleton itself is the cause, bone-cutting procedures (mandibular angle contouring / malar contouring) are indicated. While the effect is greatest, as shown by Erdem et al.'s 10-year analysis of 1,095 cases of orthognathic surgery[5]and Shalabi et al.'s review using 3D simulation in preoperative planning[6], it is a major irreversible surgery where management of positional relationships with the inferior alveolar nerve and bilateral symmetry is critical. Additionally, complication rates specific to bone-cutting procedures lack sufficient data in this corpus, and we will honestly communicate that point as an area of uncertainty. The starting point is determining through examination whether the cause is fat, muscle, or bone.