オトガイ形成（顎の骨切り）: Downtime
- Downtime at a glance
- Recovery timeline: treatment day to final result
- Common symptoms
- When can I do what? (Daily-life restrictions)
- Pain and anesthesia
- Tips for a smoother recovery
- Risks and side effects (the honest version)
- Spacing and combining with other procedures
- Who it may suit / who should be cautious
- Frequently asked questions
Downtime at a glance
Strong swelling generally lasts 1–2 weeks, and major swelling takes about 2–4 weeks to subside. Numbness and puffiness in the lower lip may remain for several months, and the final result is generally said to take 3–6 months — making this a surgical procedure with a long downtime (individual results vary).
Typical downtime is 2–4 weeks (swelling peaks at 2–3 days, with major swelling lasting 1–2 weeks. Puffiness, numbness, and firmness are said to settle gradually over 3–6 months. Individual results vary.), and most people feel comfortable being seen in public after For remote work or jobs where you can wear a mask, 1–2 weeks after surgery is a common guideline. For customer-facing work, photo shoots, and other situations where you are seen up close, waiting 2–4 weeks or more is considered safer — though recovery varies from person to person.. How much swelling or bruising appears varies from person to person, depending on constitution and the extent of treatment.
Recovery timeline: treatment day to final result
The procedure is generally performed under general anesthesia or intravenous sedation. Afterward, the chin is compressed and supported with a facial support band or similar, and as the anesthesia wears off, pain and swelling gradually increase. Rest quietly on the day of surgery with your head elevated. You will usually be advised to start with fluids, jelly, or liquid foods. Some oozing of blood can occur; avoid rinsing your mouth forcefully.
Swelling continues to increase during this period. You are likely to notice numbness or dulled sensation in the lower lip and chin, and may find it hard to open your mouth. Meals remain centered on liquid to very soft foods. Some facilities schedule a next-day check-up to examine the wound and the compression band. Prioritize rest and avoid overexertion.
This is around the peak of the swelling. Bruising may appear from under the chin down toward the neck, but in most cases this is considered part of the normal course. Continue the compression band exactly as instructed by your doctor. Many people spend this period keeping outings to a minimum while controlling the pain with pain relievers.
The strong swelling begins to subside. The compression schedule may be eased — for example, switching from all-day wear to nighttime only (timing varies by facility). Soft foods become easier to eat. Some people return to short outings or remote work with a mask on, but puffiness along the jawline still remains.
Noticeable swelling and bruising have settled considerably by this point. With a mask on, the changes become hard for others to notice, and this is a common guideline for returning to desk work. Still avoid chewing hard foods, and protect the chin from strong impacts or pressure. Numbness and firmness may remain.
The major swelling has largely subsided, and you begin to see the change in your facial contour. Dietary restrictions are typically eased around this time, and you can gradually move back toward a normal diet (check with your doctor before eating hard foods). Subtle puffiness, firmness, and numbness may remain, but they usually become hard for others to notice.
Puffiness and firmness settle further, and the contour of the chin becomes more defined. Numbness is also said to gradually recover in most cases, though how sensation returns varies from person to person. The overall shape of the final result starts to become clear.
By this stage the puffiness is mostly gone, the bone has continued to heal, and the result stabilizes. This is generally the earliest time to evaluate any asymmetry or contour concerns. In rare cases numbness can persist longer, so if anything concerns you, consult the medical institution where you had the surgery.
Bars show approximate swelling levels (individual results vary).
Common symptoms
| Symptom | Likelihood | When it appears | How long it lasts | Notes |
|---|---|---|---|---|
| Strong swelling (chin, jawline, and under the chin) | High | Same day to the next day | Strong swelling for 1–2 weeks, major swelling for 2–4 weeks, puffiness for several months | Swelling tends to spread beyond the chin to below the cheeks and toward the neck, and may look uneven from side to side. In most cases it is said to subside gradually. |
| Bruising | High | 1–3 days after surgery | About 2–3 weeks | Due to gravity, bruising may appear to drift down from under the chin toward the neck and chest, but in most cases it is said to turn yellowish and fade over time. |
| Numbness or dulled sensation in the lower lip and chin | High | Immediately after surgery | Several weeks to several months (in rare cases it may persist longer) | This is said to occur easily because the mental nerve is irritated or stretched during the bone cut. In most cases sensation is said to recover gradually over time, though this varies from person to person. |
| Pain and discomfort when moving the mouth | High | Same day to a few days after | Strong pain for 2–3 days, dull pain for about 1–2 weeks | In most cases the pain is said to be manageable with prescribed pain relievers. If it suddenly worsens, see your doctor promptly. |
| Difficulty opening the mouth and eating | Medium | From the day of surgery | About 1–2 weeks | Because of the wound inside the mouth and the swelling, opening the mouth wide or chewing may become difficult for a while. |
| Discomfort from the wound inside the mouth and pulling from the sutures | Medium | Immediately after surgery | About 2–4 weeks | The wound inside the mouth is usually closed with dissolvable sutures. You may feel some discomfort when the area is touched during meals or tooth brushing. |
| Firmness and tightness of the chin (scar contracture) | Medium | 1–2 weeks after surgery | Usually softens over about 1–3 months | As the wound heals, the area may temporarily feel firm, and you may find it harder to move your facial expressions. |
When can I do what? (Daily-life restrictions)
| Activity | Typically OK from | Key point |
|---|---|---|
| Compression (facial support band) | Follow your doctor's instructions on when to remove it (all-day wear for a few days to 1 week, sometimes followed by nighttime-only wear) | The band is said to help control swelling and allow the skin and soft tissue to conform to the new bone position. Do not remove it early on your own judgment. |
| Eating | Liquid foods and jelly for the first few days, then soft foods for 1–2 weeks as a guideline. Hard foods are often restricted for about 1 month | Foods that require strong chewing — rice crackers, crusty bread, chewing gum — may put strain on the fixed bone, so it is safest to avoid them until your doctor gives the go-ahead. |
| Tooth brushing and mouth rinsing | Usually allowed from the day of surgery (rinse gently and avoid touching the wound) | Because there is a wound inside the mouth, you will generally be advised to keep the area clean with a medicated mouthwash and gentle rinsing after meals. Instructions vary by facility. |
| Makeup | Usually allowed from the next day on areas away from the band and the wound. Around the chin, wait until the compression schedule is eased | The mouth and chin area will be swollen and covered by the band, so do not force coverage — check with your doctor first. |
| Face washing | Gently from the next day on areas away from the band. Around the chin, wait until the band comes off | Take care not to rub hard or press on the chin. |
| Shower | Usually allowed from the next day — keep it short and lukewarm | On the day of surgery, take it easy depending on how you feel after anesthesia. Be careful not to get the compression band wet. |
| Bathing (soaking in the tub) | About 1–2 weeks after surgery | Increased circulation can intensify swelling and bruising, so it is safest to avoid long soaks while the swelling is still strong. |
| Alcohol | About 1–2 weeks after surgery (confirm with your doctor) | In addition to the risk of increased swelling and bleeding, you will generally be advised to avoid alcohol while taking antibiotics or pain relievers. |
| Exercise | Light exercise from about 2 weeks, strenuous exercise from about 1 month | Increased circulation can bring the swelling back. For contact sports, you may be instructed to wait even longer to protect the chin from impact. |
| Sauna and hot-stone baths | About 1 month after surgery | High heat can prolong swelling and puffiness, so it is safest to wait until the swelling has settled. |
| Smoking | Follow your doctor's instructions (you will generally be advised to refrain for several weeks before and after surgery) | Smoking impairs blood flow and has been noted as potentially affecting how the wound and bone heal. |
| Chin massage, sleeping face-down, and other strong pressure on the chin | Avoid for 1–3 months (until your doctor gives the go-ahead) | This is to avoid putting strain on the fixation hardware and the healing bone. You may also be advised to avoid resting your chin on your hand. |
Pain and anesthesia
The typical pain level is Moderate. The procedure is generally said to be performed under general anesthesia, or under intravenous sedation combined with local anesthesia. The anesthesia method varies with the surgical technique, your constitution, and the facility's policy, so confirm the details at your consultation. During surgery, the anesthesia keeps pain under control. Afterward, a pressing or throbbing pain from the strongly swollen chin may continue for 2–3 days, but in most cases it is said to be manageable with prescribed pain relievers. A dull ache or discomfort when moving the mouth may then continue for about 1–2 weeks. Pain perception varies from person to person; if the pain suddenly intensifies or is accompanied by fever, it could indicate an infection, so see your doctor promptly.
Tips for a smoother recovery
- For the first few days, sleeping with your head elevated on an extra pillow — keeping it above heart level — is said to help swelling and puffiness drain. Adjusting your sleeping position can make a real difference.
- Cooling is said to help reduce swelling, but while sensation is dulled it is easy to over-chill the area without noticing. Keep the duration and method within your doctor's instructions.
- Going easy on salt and staying well hydrated are said to help with puffiness. Hold off on alcohol, smoking, strenuous exercise, and anything else that strongly boosts circulation until your doctor clears them.
- Following the instructions for compression, dietary restrictions, and medication exactly helps reduce the factors — such as swelling and infection — that can slow recovery. It is reassuring to schedule important events at least 3 months out, and ideally 6 months out.
Risks and side effects (the honest version)
- Significant swelling, bruising, and pain will occur. Because the incision is inside the mouth, infection can occur in rare cases; if you develop fever, intense pain, or discharge of pus, see your doctor promptly.
- Numbness or dulled sensation in the lower lip and chin commonly occurs due to the effect on the mental nerve. In most cases sensation is said to recover over several weeks to several months, but in rare cases it can persist long-term.
- Asymmetry, step-offs in the bone, or a result different from what you envisioned can occur. Depending on how far the bone was moved and where it was fixed, revision surgery may be considered. Evaluation is generally done 3–6 months or later, once the swelling has subsided.
- The plates or wires used for fixation can cause discomfort, and in rare cases — such as infection — removal surgery may become necessary. The materials used and whether removal is needed vary by facility and technique.
- Other possibilities that have been noted include the bone not healing as expected, the contour appearing to change over time due to changes in bone and soft tissue, sagging of the skin and muscle at the chin, and difficulty fully closing the lower lip.
- General anesthesia and intravenous sedation carry their own risks (nausea, allergic reactions, and, rarely, serious complications). Always disclose any medical conditions, medications, and past problems with anesthesia in advance.
- Suitability and technique (advancement, setback, shortening, lengthening, and so on) depend on your bone structure and bite. Always consult a physician — including on whether to have the procedure at all — after a proper examination and any necessary tests.
Spacing and combining with other procedures
It is said to take 2–4 weeks for the major swelling to subside and around 3 months for the contour to look natural. If you have an important event — a wedding, photo shoot, or job interviews — having the surgery at least 3 months before, and ideally 6 months before, gives you a comfortable margin. If you are considering a revision or repeat surgery, the result needs to be evaluated properly after the bone has healed and the puffiness has resolved, so it is generally said that the decision should wait at least 6 months to 1 year. The timing and feasibility depend on the condition of the bone, so always be examined by the surgeon who performed the operation or the doctor who will handle the revision.
| Combined procedure | Timing | Wait time | Reason |
|---|---|---|---|
| Jaw Angle & Mandible Contouring (Facial Bone Contouring) | Same day OK | Sometimes performed together as a single operation | These are sometimes planned together to balance the entire jawline in one operation. However, operating time, bleeding, and swelling are all greater than with either procedure alone, so whether to combine them is a judgment your doctor makes based on your bone structure and overall health. |
| Facial Liposuction (Under the Chin & Cheeks) | Same day OK | Sometimes combined on the same day, sometimes scheduled separately | Because both aim to refine the facial contour, they are sometimes performed together — but the swelling and puffiness overlap, so the downtime tends to run longer. The order, and whether same-day treatment is possible, is decided by your doctor based on the planned result. |
| Hyaluronic Acid Filler (Chin) | Wait required | After surgery, wait until the swelling settles — about 1–3 months or later | The usual approach is to evaluate the new contour properly after the skeletal change, then fine-tune with filler. Conversely, if you have previously had filler injected into your chin, it can affect the diagnosis and surgical plan, so be sure to disclose it in advance (dissolving the filler may be recommended). |
| Thread Lift | Wait required | About 3 months or later | While swelling and firmness remain it is hard to assess sagging accurately, and the thread insertion points at the chin could overlap with the surgical site, so it is considered safer to wait until the contour has stabilized. |
| Masseter Botox (Jaw-Slimming Injection) | Wait required | About 1 month as a guideline (your doctor may adjust the timing) | While the swelling is strong it is hard to judge the right dose and evaluate the effect, so the usual approach is to wait until the major swelling has subsided. Also consider that the period of reduced bite strength would overlap with the post-surgical dietary restrictions. |
Who it may suit / who should be cautious
May suit you
- Those bothered by a receding or small chin who want to improve their profile (E-line) balance
- Those bothered by a protruding chin, or by its length or asymmetry
- Those who feel injections such as hyaluronic acid filler do not give enough change
- Those who want to reshape their contour at the skeletal level rather than with a temporary method
- Those who can set aside an extended period off and accept a longer downtime with dietary restrictions
Consider carefully
- Those still growing, whose skeletal development is not yet complete
- Those who are pregnant or breastfeeding
- Those with medical conditions that make general anesthesia difficult (heart or respiratory disease, etc. — always disclose these in advance)
- Those undergoing orthodontic or bite treatment whose treatment plan has not been checked for possible impact
- Those who cannot set aside the time needed for an extended downtime, compression wear, and dietary restrictions