Buccal fossa is a round or oval skin depression formed on the outside of the corners of the mouth due to the movement of the expression muscles (smiling muscles), which is formed by connecting the fascia of smiling muscles with the dermal punctate fibrous bands on the outside of the corners of the mouth.

Dimple plastic surgery is especially suitable for people with plump cheeks. Embedding two dimples can make the appearance sweeter, but for people with thin cheeks, especially those with "inverted triangle" faces, matching dimples will be very uncoordinated. The method of fixing dimples is simple. Draw a horizontal line outward from the corner and a vertical line downward from the outer corner. The intersection of two lines or the part slightly above the intersection is the fixed point of the dent. You can also use a toothpick to press the skin on your cheek and find the best dimple position yourself.

There are many methods of dimple shaping, all of which are very simple. It is usually carried out in the mouth, so it will not leave skin scars. There are five common methods: embedding thread, suturing, embedding thread through incision, injecting hardener and circular incision. Either way, the adhesion between dermis and smiling face muscle is man-made. As to what method to choose, the doctor can choose according to the specific situation and the requirements of the surgeon. The early dimples after operation are unnatural because of suture and hypertrophic scar, that is, dimples appear with or without facial expression and lack of dynamic aesthetic feeling. Usually it will return to normal after a few weeks. When facial expression activities, especially smiles, begin, dimples appear.

However, the following complications will occur:

(1) expansion. Due to the cutting stimulation of the thread. There is swelling and induration locally, but the swelling can slowly subside after suture removal, and generally no special treatment is needed. (2) infection. Because the mouth has to eat every day, it sometimes leads to local infection. If the inflammatory reaction such as local redness, swelling, heat and pain is serious and cannot be relieved by antibiotics, the stitches should be removed to avoid aggravating the infection.

(3) Dimples disappear. Because the knot is not tight, or the dermal tissue is not taken when passing through the dermis, the dermal layer is not firmly attached to the buccal mucosa, and the dimples disappear. After half a year, dimple shaping can be done again.

(4) The dimple shape is unnatural. Within six months after operation, artificial dimples were both smiling and not smiling. This seems unnatural. This point should be made clear to the subject.