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A soft and beautiful facial contour,
Create it with micro fat grafting.
Forehead (frontal area)
Micro fat grafting to the forehead aims to correct a flat, sunken, or irregular forehead so that it becomes soft and voluminous.
It can also effectively correct deep forehead wrinkles.
Indications for forehead fat grafting procedure
◇ When there are sunken areas on the forehead
◇ A generally flat forehead
◇ When there are scars on the forehead
◇ When there are deep wrinkles on the forehead
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How the fat grafting procedure for forehead augmentation is performed
① Fat is harvested from areas where body fat is stored in larger amounts, such as the lower abdomen, waist, or thighs.
The harvest site is selected first based on the area the patient prefers.
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Because the anesthesia is local anesthesia (painless sedation anesthesia), there is no pain at all.
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A thin liposuction cannula is used to collect fat into a syringe.
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② The harvested fat is placed in a centrifuge to filter out impurities.
The purpose of centrifugation is to remove impurities contained in the harvested fat, such as local anesthetic, serum, and red blood cells.
This process is intended to reduce side effects and increase the fat survival rate.
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③ After centrifugation, the fat undergoes a secondary concentration process to remove water and oil.
The only component needed for fat grafting is fat cells.
If other components are included, they become unnecessary graft material and worsen the procedure result.
Therefore, it is important to obtain fat that is as close to 100% as possible, and for this, manual removal of the oil is necessary.
Mechanical methods cannot completely remove the oil, and excessive oil removal can destroy fat cells, so the refining process must remove oil without damaging the fat cells.
Therefore, manual oil removal is the only method.
By removing water and oil, concentrated fat that is nearly 100% is obtained.
The fat is measured into 1cc syringes in the amount needed.
For forehead contour correction, about 10 to 20cc of concentrated fat is usually required.
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④ Fat is grafted into the forehead area, which has already been locally anesthetized.
A micro needle (micro grafting cannula) developed in-house by the Duhan Plastic Surgery Micro Fat Grafting Clinic is used.
The micro needle is a special grafting cannula used only at this clinic that allows ultra-precise grafting.
Fat grafting is performed after tunneling is completed and space for the grafted fat has been secured.
The principle of fat grafting is to graft evenly across the entire area so the fat does not clump together and to maximize the survival rate as much as possible.
The graft is placed between the bone and muscle layer and within the muscle layer, and when wrinkle correction is needed, it is also placed between the skin and muscle layer.
For contour correction, the graft is inserted at the boundary between the hairline and the skin so the needle does not stand out.
Therefore, even after forehead fat grafting, needle marks are not visible immediately after the procedure.
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A quick note ♬ Duhan Plastic Surgery
Tunneling technique
With the tunneling technique, rather than injecting a large amount into one area, we perform three-dimensional micro fat grafting using evenly distributed 100% concentrated fat in multiple layers.
A delicate and precise injection method makes customized design possible.
Fat grafting also includes a process called "tunneling," which allows the grafted fat to contact the surrounding abundant blood vessels as much as possible so it can continuously receive nutrients.
Tunneling means creating spaces for the fat just beneath the skin using a micro needle. Because the space is made like opening a tunnel and then the fat is injected afterward, the fat does not sag in the direction of gravity or become lumpy even after all the fat has been injected.
The tunneling technique includes the dissection process for wrinkles, so the fat is grafted under the dissected wrinkles, resulting in clearer wrinkle improvement compared with fat grafting at other clinics.
Examples of forehead augmentation with fat grafting
In the case of the forehead, it is effective for a sunken or irregular forehead, a flat forehead, or when deep wrinkles are present.
◆ For forehead wrinkles, fat grafting is good when the wrinkles are deep.
Fat grafting adds volume to the forehead while addressing both hollows and wrinkles.
The procedure method is determined according to the depth and appearance of the wrinkles.
Fine wrinkles can be corrected with filler injections, and if the wrinkles are judged to be deep and pronounced, fat grafting should be considered.
In the case of fat grafting, fat is harvested from the abdomen and then injected beneath the wrinkle line through a syringe.
At our clinic, we perform three-dimensional micro fat grafting using 100% concentrated fat, evenly and multilayered, rather than injecting a large amount into one place through the tunneling technique.
In addition, a delicate injection method allows customized design.
Our clinic's fat grafting also includes the process called "tunneling," which allows the grafted fat to contact the surrounding abundant blood vessels as much as possible so nutrients can be continuously supplied.
Tunneling means creating a space for the fat just beneath the skin using a micro needle. In other words, space is made like drilling a tunnel, and then the fat is injected afterward, so even after all the fat has been injected, it does not sag downward or become uneven.
Because the tunneling technique includes a dissection process for wrinkles, fat is grafted under the dissected wrinkles, resulting in much clearer wrinkle improvement compared with fat grafting at other clinics.
In addition, it is performed as micro fat grafting with a fine cannula, and customized design is possible using a delicate injection method.
In some cases, filler for fine wrinkles is also performed at the same time.
The procedure effect is over 90%, and the duration of the effect is semi-permanent.
Once fat cells have taken hold after fat grafting, they are no longer absorbed and last for life.
That does not mean, of course, that the shape itself lasts forever.
As people age, the skeleton changes, wrinkles form, the skin sags, and weight loss occurs, so the grafted area does not remain exactly the same shape.
However, before significant aging occurs, the effect remains lasting.
The procedure takes about 1 hour.
There may be slight swelling after the procedure, but you can return to daily life right away.
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◆ It is possible to add a natural overall volume to the forehead with fat grafting.
If you want a round forehead, you simply add enough fat to create that rounded shape.
If you want only a naturally balanced look overall, the procedure can also be done to produce a natural appearance.
Once fat cells have taken hold after fat grafting, they are no longer absorbed and last for life.
That does not mean, of course, that the shape itself lasts forever.
As people age, the skeleton changes, wrinkles form, the skin sags, and weight loss occurs, so the grafted area does not remain exactly the same shape.
However, before significant aging occurs, the effect remains lasting.
Although the wording may differ, it is therefore called permanent, and because there is room for change due to aging, it is also called semi-permanent.
For a flat or irregular forehead, fat grafting is good when changing it into a more voluminous shape.
At our clinic, we perform three-dimensional micro fat grafting using 100% concentrated fat.
To minimize swelling and bruising during the procedure, an anti-swelling agent is mixed with the anesthetic, and painless sedation anesthesia under local anesthesia is provided.
Fat is harvested from the thighs or lower abdomen.
The procedure takes about 1 hour.
You can return to daily life immediately after the procedure. Swelling and bruising are almost nonexistent.
Advantages of forehead augmentation with fat grafting
① The procedure is simple.
② Because foreign materials such as commercial fillers, silicone, Gore-Tex, or AlloDerm are not used, there is no need to worry about side effects.
③ Because the procedure does not require an incision in the skin, there is no need to worry about scars.
④ Because it uses your own tissue, the result looks natural.
⑤ There is almost no swelling or bruising.
⑥ You can return to daily life immediately after the procedure.
⑦ Because the fat tissue takes hold, the effect can be maintained for a long time.
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Number of treatments for forehead fat grafting
Some fat is absorbed, so if one treatment is not enough, a repeat procedure may be performed between 3 and 10 months later.
The second procedure is performed 3 to 10 months after the first procedure,
and when repeating the procedure, the fat that had been harvested and stored at the time of the first fat grafting is thawed and used.
The second procedure is decided after checking the results of the first procedure 3 to 4 months later, so a second procedure is not absolutely necessary.
The decision about whether a second procedure is needed depends on the degree of forehead hollowing, the depth of the wrinkles, and the fat survival rate, and it is a decision each person makes for themselves.
Precautions after forehead fat grafting
◇ Immediately after the procedure, no bandage or dressing is placed on the forehead, so normal activity is possible right away.
◇ Do not press or massage the forehead immediately after fat grafting, and wearing a hat with a brim is also not allowed.
◇ From 2 to 3 days after the procedure, swelling in the forehead may move down to the eyelids or bridge of the nose, but it will mostly subside after about 7 days.
◇ Running exercise negatively affects the fat survival rate, so avoid running for about a month. Walking, stretching, and weight training can be done after 1 to 2 weeks.
◇ Avoid alcohol and smoking for about a week. Alcohol can cause inflammation at the graft site, and excessive smoking negatively affects the fat survival rate.
Effects of fat grafting for correcting hollows and wrinkles
For forehead hollows and wrinkles, satisfactory results can usually be obtained with 1 session and, at most, 2 sessions.
When correcting forehead wrinkles with fat grafting, it is applied in cases where the wrinkles are deeply etched.
If forehead hollows and deep wrinkles are present together, fat grafting can be even more effective.
This is because both the hollow forehead and wrinkles are corrected at the same time.
Fine wrinkles can be corrected with fillers (Juvederm, Restylane, etc.) or Botox,
but deeply etched wrinkles have limits with these treatments, so fat grafting is more effective for deep wrinkles.
Sometimes Juvederm filler injections are used together with fat grafting.
How long does the effect of fat grafting last?
Some people say fat grafting has no effect because much of it gets absorbed,
but that applies to cases where the procedure was performed at a clinic with relatively little experience.
You can obtain satisfactory results only when fat grafting is done correctly,
and once the grafted fat takes hold, it is no longer absorbed and remains as your own fat tissue for life,
so fat grafting is the safest and most effective method.
On average, 1 to 2 fat grafting sessions can produce a permanent, satisfactory facial contour correction effect.
Side effects of forehead fat grafting
In principle, if fat grafting is performed correctly, there are almost no side effects.
However, if the practitioner lacks experience or receives a fat grafting procedure that violates the principles,
there may sometimes be lumpy contouring on the forehead, excessive fat absorption leading to no visible effect, or severe swelling caused by an overly aggressive procedure.
Fat grafting only produces satisfactory results when the procedure is performed accurately and according to principle.
It is best not to receive the procedure from a practitioner who has little fat grafting experience or from a non-specialist in plastic surgery.
Other procedures using implants
In addition to fat grafting, artificial dermis AlloDerm or implants may also be inserted,
but in the case of AlloDerm, the cost is very high and the contour correction effect is weak,
and because a large incision must be made in the scalp and inserted after lifting the forehead muscle layer,
the swelling after the procedure is very severe, and a bandage must be worn for about 4 to 5 days.
Even in the case of silicone implants, a 5 cm incision must be made in the scalp to insert the implant,
and there can be severe swelling and complications such as fluid collecting in the forehead, and a bandage must be worn for about 4 to 5 days.
There is also the problem that the contour of the silicone may show through later, or as time passes, the shape may become distorted because it no longer matches the bone contour.
In addition, implants have little to no effect on correcting deep forehead wrinkles.
Comparison of various procedures for forehead augmentation
| Filler injection | Alloderm (liquid artificial dermis) | AlloDerm (solid artificial dermis) | Silicone implant | Fat grafting |
|---|
| Incision required | Not needed | Not needed | 4–5 cm on the scalp | 4–5 cm on the scalp | Not needed |
| Procedure time | 30 minutes | 30 minutes | 1 hour | 1 hour | 1 hour |
| Wrinkle improvement effect | Effective for fine wrinkles | Almost none | Almost none | Weak | Effective for thick, deep wrinkles |
| Forehead augmentation effect | Almost none | Very weak | Weak | Large | Moderate or greater |
| Return after discharge | You can return to daily life immediately, but there may be red bruising from the injection marks for 1 to 2 weeks. | You can return to daily life immediately, but there may be red bruising from the injection marks for 1 to 2 weeks. | Severe swelling and pain occur, and a bandage must be worn for about 4 to 5 days. | Severe swelling and pain occur, and a bandage must be worn for about 4 to 5 days. | You can return to daily life immediately, but eyelid swelling may occur for about 7 days. |
Side effects of fat grafting
Of course, good results are desired, but depending on the surgeon's skill and technique, unavoidable problems may sometimes arise.
Poor survival rate leading to unsatisfactory results, awkward shape, asymmetry, severe swelling, inflammation, fat necrosis, calcification, irregularity, sagging, and pigmentation may occur.
| Inflammation | Occurs when bacteria enter during the procedure, or when the fat fails to take hold and liquefies during the graft survival process |
|---|
| Necrosis | A state in which fat that failed to take hold due to inadequate blood supply during the graft survival process rots and leaves behind melted remnants |
| Calcification | A phenomenon in which fat that failed to take hold due to inadequate blood supply during the graft survival process hardens and becomes a firm lump as calcium deposits accumulate |
| Irregularity | A phenomenon in which the shape does not come out evenly and becomes lumpy when fat is not grafted evenly or is concentrated in only one area |
| Sagging | Excessive grafting or grafting into the wrong location can cause sagging of the face. |
| Pigmentation | When bruising and swelling are severe, depending on the individual, iron components left in the bruise may deposit in the skin and oxidize, turning brown. This may occasionally happen after under-eye procedures depending on the person's constitution. |
| Asymmetry | When the left and right survival rates differ, or when the amount is not properly adjusted during the first procedure, resulting in left-right imbalance |
| High absorption rate | A phenomenon in which the fat does not take hold enough to produce the desired contour and a large amount is absorbed, so the appearance before and after the procedure does not change much |
| Awkward shape | A phenomenon in which too much fat takes hold or fat is grafted in the wrong area instead of the proper one, disrupting the overall facial balance |
Problems related to fat grafting side effects
Because fat grafting uses your own fat, unlike commercial filler substances, there are almost no side effects.
Other than slight swelling and bruising after the procedure, there are essentially no side effects.
Therefore, it can be said to be safer than any other cosmetic procedure.
However, this applies only when fat grafting is done properly, and if the procedure violates the principles, side effects may sometimes occur, such as an uneven shape, fat necrosis and hardening, inflammation, or an awkward appearance due to excessive injection.
These are issues determined by the practitioner’s experience and skill, and are absolutely not a general problem with fat grafting itself.
Therefore, if the procedure is done according to the principles, these side effects are rarely seen.
Misconceptions and problems about fat grafting
You may think that fat grafting always produces good results, but that is absolutely not the case.
There is a tendency to think of fat grafting as easy, but it is absolutely not a simple or easy procedure.
As with all surgeries, the result depends on the surgeon's experience and know-how.
Fat grafting is a more demanding procedure than any other cosmetic surgery,
and it requires not only a very complex process but also experience, know-how,
and very precise manual skill.
How to perform fat grafting without side effects
① Procedure under sterile conditions
As with all surgeries, fat grafting must also be performed with completely sterilized instruments and materials.
After the procedure is finished, any residual fat inside the suction cannula or grafting cannula must be thoroughly cleaned with a brush and disinfected in a steam autoclave so that no residue remains. Anesthetic solution and saline must also be carefully managed so they are not contaminated.
Thorough disinfection and material management can prevent bacterial infection and inflammation.
② Multiple stages of fat refining
Fat refining must remove impurities completely in several stages to maximize the effect.
The harvested fat usually contains about 80% impurities, and only about 20% is actually usable.
If the remaining impurities (blood, serum, anesthetic, oil, water, etc.) are not removed, the result will be poor no matter how well the grafting is done.
③ Pre-grafting preparation
A high survival rate is needed so that satisfactory results can be achieved, ideally in one procedure.
The fine fat must be planted evenly in multiple layers, and before that, space must be secured at the graft site so that the previously grafted fat is not compressed by surrounding tissue. Only then can the fat avoid pressure and take hold well.
④ Precise and even grafting across multiple tissue layers
A soft and natural contour is the key to fat grafting.
To express a soft contour, it is best to graft in a three-dimensional manner, evenly across multiple layers.
The grafting locations include the subcutaneous layer, muscle layer, and fascia layer, and the fat must be spread through the tissue as if sowing seeds evenly in order to obtain a soft contour without irregularities.
Frequently asked questions and answers about fat grafting
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What kind of anesthesia is used for fat grafting, and does it hurt?
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All fat grafting is performed under local anesthesia with painless sedation anesthesia.
Sedation anesthesia is not general anesthesia; it is anesthesia that keeps you asleep for about 5 minutes only to eliminate pain during local anesthesia.
Therefore, there is no need to worry about pain.
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How is the fat grafting process carried out?
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All fat grafting is performed under local anesthesia with painless sedation anesthesia.
From fat harvesting to refining and grafting, every step is carried out delicately and accurately.
Fat is harvested with minimal damage to living fat cells, and to concentrate the fat as close to 100% as possible, it goes through centrifugation and oil/water removal steps.
In addition, before fat grafting, subcutaneous tunneling is performed to secure space for the fat to be grafted.
When grafting the fat, micro fat grafting is used to maximize the survival rate.
It can be completed in as little as 20 to 30 minutes, and if multiple areas are treated at the same time, it may take more than 2 hours.
You can go home immediately after the procedure.
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From which area is it best to harvest fat?
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For fat grafting, fat must first be harvested from an appropriate area.
The donor site is determined by considering the amount of fat that needs to be suctioned, and when only a small amount is needed for areas such as under the eyes, the nose, or the nasolabial folds, the lower abdomen is usually chosen.
The lower abdomen is preferred because it is easy to harvest from, swelling and pain after the procedure are mild, and daily life is more comfortable.
If a large amount is needed, such as for the cheeks or forehead, it is necessary to check whether enough fat can be harvested from the donor site.
If there is a lot of fat in the lower abdomen, it is harvested there. If there is little fat in the lower abdomen, or if the abdominal fat has lost much of its elasticity due to aging or childbirth, harvest may not be possible there even if there is fat.
This is because the abdomen may sag after fat harvesting.
In such cases, the thighs are used. The thigh donor site is divided into the inner, outer, and back areas, and the area with the most excess fat is selected for harvesting.
Fat harvesting is performed carefully so that no deformity or hollowing occurs at the donor site.
In some cases, if the patient specifically prefers a certain area, harvesting may be done from that area as much as possible.
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How many sessions are usually needed for fat grafting?
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Depending on the area, satisfactory results may be achieved with just one session.
The fat survival rate differs by area, and there are individual differences. If the result after the first session is satisfactory, a second session may not be necessary.
In the case of the cheeks, the survival rate is about 50 to 70%, so in most cases a slight overcorrection is done in the first procedure and a second one is not needed.
In the case of the lips or nose, the survival rate is about 30 to 50%, so a second procedure is usually needed.
Because the survival rate differs by area, there are individual differences, and there are many variables such as how much satisfaction is desired, the number of sessions varies depending on the situation.
On average, one session, or at most two sessions, can produce satisfactory results.
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How much swelling and recovery time is there after fat grafting?
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Swelling and bruising vary depending on the area and the individual's constitution.
The area with the most swelling is the lips, and the area with the most bruising is under the eyes.
The areas with almost no swelling or bruising are the bridge of the nose, the temples (temporal area), and the forehead.
In general, fat grafting does not usually cause much swelling or bruising.
On average, there may be slight awkward-looking swelling for about 1 to 2 weeks before it subsides.
The recovery period can be considered about one week, which is the period when swelling and bruising are present.
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Does the second fat grafting have to be done exactly 3 months later? Can it be done earlier or later?
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A second procedure is not mandatory and is performed only when needed.
On average, the second fat grafting is scheduled after 3 months.
The reason is that fat survival takes place over 3 months, and after 3 months there is almost no change in appearance, so using that time point as the basis for deciding whether a second fat grafting is needed allows for a more accurate judgment.
Another reason is that if the second fat grafting is done too soon, the fat grafted during the first procedure may be damaged during the second procedure before it has taken hold.
Doing the second procedure 5 or 6 months after 3 months is not a problem.
However, after 10 months, the stored fat is discarded, so having the second fat grafting within 10 months makes the procedure simpler.
If the second procedure is done after 10 months, fat must be harvested again.
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How long does the effect of fat grafting last?
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Some absorption occurs until about 3 months, when the graft takes hold, but after 3 months, the fat that has taken hold is no longer absorbed and remains permanently as your own tissue.
However, the shape of the grafted area does not remain the same for life.
As time passes and people get older, aging changes such as skin sagging, wrinkle formation, and skeletal changes occur, so the area that was fat grafted also does not stay protected from aging.
For that reason, the effect of fat grafting is described as semi-permanent, but more precisely it is also described as permanent.
It is a difference in wording, but you can think of the effect as lasting until aging progresses significantly.
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What is the difference between fat grafting and micro fat grafting?
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Fat grafting is a general term used to describe the entire process of harvesting fat and transferring it to the area to be grafted.
In other words, removing fat in a lump and grafting it by surgical methods is called fat grafting, and harvesting it with a syringe and grafting it with a syringe is also called fat grafting.
Micro fat grafting is a method of fat grafting using a syringe. To increase the fat survival rate, even when the same amount is grafted, small amounts are grafted into many places in a size similar to sesame seeds, which is one method used to improve precision and survival rate.
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What is the difference between two-dimensional fat grafting and three-dimensional space fat grafting?
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So-called three-dimensional fat grafting means grafting fat evenly across multiple layers.
Under the skin there are several tissue layers, such as the subcutaneous fat layer, fascia layer, muscle layer, and periosteal layer.
Three-dimensional fat grafting means grafting fat evenly across these layers to make the best use of space, increase the fat survival rate, and allow soft and even grafting.
Two-dimensional fat grafting means grafting only into one layer among the multiple layers, such as the muscle layer or fat layer.
However, not all three-dimensional fat grafting is good.
Depending on the area to be grafted and the amount to be grafted, there are areas that should be grafted three-dimensionally and areas that should be grafted two-dimensionally.
For example, the upper eyelid area should be grafted under the muscle layer, but if grafted three-dimensionally, the shape becomes lumpy and side effects such as heaviness of the eyelids occur.
Therefore, for the upper eyelid, two-dimensional flat fat grafting, in which fat is grafted only into the fat layer, is better.
For areas such as the chin or cheeks, when a relatively large amount is grafted, it is better to spread the fat evenly across the muscle layer and fat layer, because the shape becomes smoother and it helps the survival rate, so three-dimensional fat grafting is preferable.
It is important to select the appropriate method for each area.
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What method is used to increase the survival rate of fat?
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To increase the survival rate of fat, the harvesting process itself is important first.
The fat should be harvested carefully so that the fat cells are not damaged as much as possible, and impurities should be filtered out as much as possible.
To do this, the fat is carefully harvested using a small liposuction cannula, and the harvested fat is centrifuged for only 3 to 4 minutes at an appropriate speed.
In addition, after centrifugation, oil and water are removed from the fat through a second refining process by placing it on sterile gauze.
Only through this process can fat that is close to 100% be obtained.
Only when the fat is concentrated close to 100% do the results after fat grafting become good.
Even if the same amount is grafted, if 50% of it consists of impurities such as oil or water, it is as if only half the amount was actually grafted, so the effect is reduced by half.
It is no exaggeration to say that the biggest factor in the effectiveness of fat grafting is whether the fat is properly concentrated or not.
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Some people say that fat grafting is often ineffective because it is mostly absorbed. Is that true?
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Fat grafting methods differ by clinic, and the course and results vary greatly depending on skill.
If the fat grafting is done carelessly and against the principles, almost all of the grafted fat may be absorbed, resulting in a very high absorption rate and little difference from not having the procedure at all.
Only when the entire process from harvesting to refining and grafting is performed accurately and according to principles can a high survival rate and the effect of an even, soft contour be obtained.
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Is it true that the face can become lumpy after fat grafting?
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The principle of fat grafting is to achieve an even and soft contour.
If lumpy side effects occur, they are the result of improper fat grafting that violates the principles.
There are several causes of lumpiness.
Examples include grafting fat irregularly directly under the skin, grafting too much fat in one place, grafting unevenly rather than distributing it uniformly, and failing to perform proper molding after the fat grafting.
Therefore, to obtain an even and soft contour, fat should not be grafted too superficially, it should be micro-grafted evenly, and the procedure should be finished with molding to achieve a smooth facial contour correction effect.
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How many times do I need to visit the clinic after fat grafting?
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Two days after fat grafting, you visit the clinic to check the progress.
You also visit about twice a week.
If it is inconvenient or your home is too far away, you do not necessarily have to visit after the procedure.
Since the stitches at the fat harvesting site can be removed at a nearby clinic after one week, those who live far away only need to come on the day of the fat grafting procedure, and afterward, if they judge that the recovery is going well, they do not necessarily have to come in.
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What side effects can occur after fat grafting?
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Because fat grafting uses your own fat, unlike commercial filler materials, there are almost no side effects.
Other than slight swelling and bruising after the procedure, there are essentially no side effects.
Therefore, it can be said to be one of the safest cosmetic procedures.
However, this applies only when fat grafting is done properly, and if the procedure violates the principles, side effects may sometimes occur, such as uneven shape, fat necrosis and hardening, inflammation, or an awkward appearance due to excessive injection.
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How long can stored fat be kept?
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Any fat left over after grafting is stored frozen under sterile conditions for 10 months.
After 10 months, the stored fat is discarded.
Because of storage capacity limits, it is not kept for more than 10 months.
If a second procedure is done within 10 months after fat grafting, the frozen stored fat can be used for a simpler procedure. If you return after 10 months for the second procedure, the stored fat will already have been discarded, so fat must be harvested again for the second procedure.
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Is there a difference in results between using stored frozen fat and using freshly harvested fat?
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If frozen fat is stored properly, the properties of the fat cells hardly change.
Therefore, frozen stored fat shows almost no difference in results compared with freshly harvested fat.
How well fat can be stored is also one of the fat grafting techniques.
Without fat storage technology, it is difficult to store fat for even one month.
It also creates the inconvenience and effort of having to harvest fat each time the procedure is done.
The storage method requires sterile, low-temperature freezing, and to prevent the fat from deteriorating, it should be stored after impurities are removed so that the frozen storage period can be extended.
Usually, fat cells can be stored sufficiently for up to about 10 months without deterioration.
If a clinic says frozen fat easily deteriorates and therefore must be harvested again every time the procedure is done, that clinic has no storage facility or technology at all.
In other countries, frozen fat is often used for up to 3 years.
Duhan Plastic Surgery Autologous Fat Grafting Clinic
Features and pride
http://www.duhans.com
All anesthesia is done with local anesthesia (sedation anesthesia).
Local anesthesia is performed together with sedation anesthesia, and the procedure is carried out without any pain during or after the anesthesia.
We have a systematic and advanced fat grafting system.
We harvest living fat cells and maximize purity through centrifugation refining and removal of unnecessary oil.
Before grafting, we secure space in the graft site through subcutaneous tunneling.
We perform precise grafting using micro fat grafting cannulas.
We graft evenly across multiple layers in a three-dimensional way to maximize the survival rate and create a soft contour.
We select appropriate and diverse fat harvesting sites.
The most commonly used site is the lower abdomen. Because pain after the procedure is mild, swelling and bruising are minimal, and daily life is convenient, it is often the first choice.
The next most common site after the lower abdomen is the inner thigh, followed by the outer thigh.
If there is not enough fat in the thighs, the lower buttocks or flanks may also be used.
There is no fixed answer to which area gives the best fat survival rate.
The results are similar, and although the most ideal site is the area with the most excess fat, it is better to decide the donor site by considering the amount of fat to be harvested and the activities after the grafting.
We maximize the survival rate through a two-step refining process of the harvested fat.
The impurity that makes up the highest proportion of harvested fat is local anesthetic, followed by oil.
Serum, red blood cells, and other impurities are also included.
As the first step, the fat goes through centrifugation for 3 to 4 minutes, then enters the second-step oil removal process.
Oil is removed manually through a natural absorption method.
Through this two-step refining process, we obtain fat concentrated to nearly 100%, maximizing the effect of fat grafting while also increasing the survival rate as much as possible.
We secure space for fat grafting through subcutaneous tunneling.
Subcutaneous tunneling is the process of securing space in advance at the area where fat will be grafted, and it is an essential and important step for high fat survival and even grafting.
Using a thin probe, the area under the skin is moved repeatedly in a fan-like pattern to create the space where the fat will be grafted.
The effect of subcutaneous tunneling is to increase the fat survival rate and prevent clumping, creating an even and soft contour.
Three-dimensional micro fat grafting can produce a soft and even facial contour.
There are some exceptions depending on the area, but the standard grafting method for fat grafting is the three-dimensional method.
It involves dividing the fat into multiple layers and grafting small amounts evenly across each area.
We use micro fat grafting cannulas for precise fat grafting.
In the past, methods using fat injection machines pushed fat under the skin at high pressure, which caused various problems.
The absorption rate was high, take-up was inconsistent, the contour became lumpy, and it was difficult to graft in delicate areas such as under the eyes.
To solve these problems, the fat is transferred again into a thin 1cc syringe during fat grafting and then grafted into the desired area.
We use micro needles (micro grafting cannulas) developed in-house.
The micro needle is a special grafting cannula used only at this clinic that allows ultra-precise grafting.
Fat grafting can be performed on the upper eyelids, lower eyelids, forehead wrinkles, glabellar wrinkles, nasolabial folds, and the bridge of the nose, making it possible in almost all cases except very fine wrinkles.
Immediately after fat grafting, molding is performed to create an even and soft facial contour.
Right after fat grafting, delicate molding is used to spread the grafted fat evenly so that a soft shape is created.
Molding is the final step of fat grafting and one of the most important steps.
Rapid freezing and sterile storage of the remaining fat simplifies a second procedure.
If a second procedure is done 3 months after fat grafting, the remaining fat from the first procedure is used without harvesting fat again.
The fat left over after the first procedure is stored after rapid freezing and sterile processing.
During the second procedure, the stored fat is thawed and the procedure can be performed more conveniently.
The storage period for fat is up to 10 months, and if you visit within 10 months, the procedure is performed using the stored fat.
Based on over 20 years of rich clinical experience and know-how, we perform multilayer (layer-by-layer) fat grafting.
The key to fat grafting is enabling living fat cells to achieve a high survival rate.
To increase the survival rate, we do not inject a large amount into one place; instead, we graft evenly across multiple layers.
Between the skin and bone, there are multiple tissues such as the fat layer and muscle layer, and fat must be injected in a multilayer structure without overlapping, such as between the periosteum above the bone and between the muscles or fascial layers above and below the muscle.
Multilayer fat grafting lasts 3 to 4 times longer than conventional methods, and fat survival is also higher.
The fat grafting at Duhan Plastic Surgery Autologous Fat Grafting Clinic also includes the process called "tunneling," which allows the grafted fat to contact the surrounding abundant blood vessels as much as possible so nutrients can be continuously supplied.
Tunneling means creating a space for the fat just beneath the skin using a micro needle. In other words, space is created like drilling a tunnel, and then the fat is injected afterward, so even after all the fat has been injected, it does not sag downward or become uneven.
In addition, a delicate injection method allows customized design.
By providing thorough aftercare after fat grafting, we carefully monitor the progress until the fat has fully taken hold.
During follow-up, if necessary, we try to minimize dissatisfaction through swelling-reduction injections, shape correction, and molding.
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http://www.microfat.net