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Benefits, risks and downtime of inserting a prosthesis into the jaw

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Benefits, risks and downtime of inserting a prosthesis into the jaw

Artificial cartilage made of medical grade silicone is called a prosthesis. It is said that by inserting a prosthesis into the chin, the contour and profile of the face can be beautifully adjusted . Inserting a prosthesis to adjust the contour and profile is generally called chin correction, chin prosthesis, etc.

The procedure for inserting the prosthesis into the jaw requires an incision in the mouth, which is a surgical procedure. Therefore, it is characterized by swelling, pain, and downtime after surgery. There is also the risk that the shape of the inserted prosthesis will emerge over time after the prosthesis is inserted .

Not only the effect obtained by inserting the prosthesis, but also the risk after insertion and the precautions for untime can be known in advance so that the treatment can be performed with peace of mind .

Face line that can be expected by inserting the prosthesis into the jaw

It is said that by inserting the prosthesis into the chin, the outline of the chin can be sharpened and the face line of the face seen from the front or side can be clearly shown . However, it is not possible to trim the face line by inserting a prosthesis in any jaw shape .

The following people are said to be suitable for jaw prosthesis insertion.

  • Those with upper and lower lips protruding forward
  • Those who want to clarify the boundary between the chin and the neck
  • Those who want to raise the height of the chin tip and make a sharp outline
  • Those with a chin behind, those with a short chin
  • Those who want to improve double chin
  • Those who want to improve umeboshi wrinkles
  • Those who want to improve the round face and make it longer

The "Beautiful Mouth Criteria" proposed by orthodontist Robert Ricketts in 1954 is a little behind the aesthetic line (E line) that connects the tip of the nose and the tip of the chin, with the upper and lower lips not touching. Was defined as an extremely beautiful profile .

Westerners have a high nose and the tip of the chin is also forward, so the position of the lips is often several millimeters behind the E line, while Asians have a low nose and the tip of the chin is also backward. It is said that the upper and lower lips often protrude forward from the E line because they are protruding .

When the chin is protruding backward and the upper and lower lips are protruding forward from the E line, the mouth is emphasized and the upper and lower lips protrude and look like a duck mouth, or the lower part of the face is swollen like a blistering There is an impression that you can see it, the profile is clear and the boundary between the chin and the neck is not visible.

However, by inserting a prosthesis made of medical grade silicone called artificial cartilage into the chin, the upper and lower lips are retracted from the E line, improving the appearance of duck mouth and blisters, and chin and neck. It is said that the boundary between the two is clear .

Those who cannot insert the prosthesis into the jaw

If you are pregnant or breastfeeding, you will not be able to insert the prosthesis into your jaw due to unestablished safety.

Features of the prosthesis to be inserted into the jaw

Silicone used in the prosthesis to be inserted into the jaw is highly safe

The prosthesis to be inserted into the jaw uses silicon, which is called artificial cartilage, which is very close to human cartilage.

Silicon used in prostheses is a resin-made medical device that is also used as a material for artificial heart valves, artificial joints, and artificial blood vessels, which is one of the medical devices transplanted into the heart of patients with valvular heart disease. It is said to have excellent safety with silicone for use.

Since it has the characteristic that it does not deteriorate even if it has been in the body for decades, the doctor carefully checks the shape and thickness of each jaw bone, selects the shape and size of the prosthesis that fits the jaw bone, and inserts it. By doing so, it is said that a semi-permanent lasting effect can be obtained .

References: Two cases in which the prosthesis was removed due to inflammation of the facial skin caused by COPD treatment equipment after a long period of time after nasal prosthesis.

The skin covers the prosthesis, so no light is visible when reacting to black light

A black light is a light such as a fluorescent tube or lamp that emits ultraviolet rays . The light of the black light itself is almost invisible, but it has the effect of shining when the black light is applied to white substances such as shirts and teeth that use fluorescent paint.

The prosthesis inserted into the jaw is also white, so it glows when exposed to black light . However, the place to insert the prosthesis into the jaw is under the periosteum, which covers the surface of the jaw bone.

By inserting it under the periosteum, the skin covers the prosthesis, so even if the light of the black light reaches the prosthesis, the state where the prosthesis is shining is blocked by the skin and does not seem to shine .

In the unlikely event that an inexperienced doctor inserts the prosthesis in the wrong place and inserts it in a shallow place of the skin instead of under the periosteum, the skin covering the prosthesis becomes thin and the light of the prosthesis reacting to the black light comes from the skin. It may be seen through .

Prosthesis may appear roentgen

Since the silicon used in the prosthesis is a solid rather than a liquid or gas, if you use a device such as a roentgen, CT, or MRI that uses radiation or magnetism to project the inside of the body, you can take a picture of the jaw with the prosthesis inserted. It may be reflected .

However, except for shooting with a suspected fracture at the hospital after hitting the jaw, it is rare to target the jaw containing the prosthesis. Therefore, it is said that it is difficult to find out that the prosthesis is put in the jaw.

Also, in the case of roentgens taken when treating teeth in dentistry, the prosthesis will not be shown if the roentgens are taken by focusing on the teeth to be treated . For some special radiographs, such as cephalograms, the prosthesis may be visible, but the prosthesis rarely interferes with the diagnosis or treatment of the disease .

How to insert the prosthesis into the jaw

Select prostheses with different shapes and sizes available at medical institutions

Before inserting the prosthesis into the jaw, consult with your doctor and choose one of several prostheses of different shapes and sizes available at your medical institution to help you achieve your ideal jaw shape. A prosthesis that is cut to fit the shape of each jaw according to the shape and size of the selected prosthesis is called "made-to-order" . Also, a prosthesis made from scratch is said to be "completely made to order" .

If your medical institution does not have a prosthesis of the shape and size you want to insert into your jaw, you can make a complete bespoke prosthesis, but only a limited number of medical institutions can make it.

If you make a custom-made prosthesis prepared by a medical institution, some medical institutions can operate on the same day . In addition, if the prosthesis is completely made to order from scratch, it will take time to make the prosthesis, so surgery will be performed the next day or later .

Bespoke prosthesis

After deciding the shape and size of the prosthesis to insert into the jaw, we will tailor it to fit your jaw skeleton.

Mark the insertion site and perform local anesthesia

After the prosthesis to be inserted into the jaw is completed, the insertion site is marked and local anesthesia is injected. Some medical institutions apply anesthetic cream for those who are not good at injection pain .

Insert prosthesis

After the local anesthetic injection, the mucous membrane of the lower lip in the mouth is incised about 1 cm to 3 cm, and the prosthesis is inserted into the space (subperiosteum) created by peeling between the bone and periosteum. The mucous membrane of the lower lip in the mouth is incised and the prosthesis is inserted into the chin, so there is no need to worry about scratches on the surface of the face .

In addition, it is said that scars are scarcely left in the mouth because the wounds heal quickly, and downtime is said to be short .

Suture the incised area

After insertion, the wound is sutured. There are two types of threads used when suturing, one is a meltable type and the other is a non-meltable type, but the thread used differs depending on the medical institution. If you use a meltable type of thread, you do not need to go to a medical institution to remove the thread because it is melted and absorbed by your body .

If you use a type of thread that does not melt, you will need to go to a medical institution to remove the thread . It takes about 30 minutes from insertion of the prosthesis to suturing.

After treatment

After inserting the prosthesis into the jaw and suturing it , tape the jaw over the skin to prevent the inserted prosthesis from slipping . After that, the doctor will explain the precautions after the procedure and finish, so you can go home immediately after the procedure.

Progress and downtime after prosthesis insertion

First day after surgery

Shower is possible on the day after surgery. Also, for several days after surgery, eat a soft meal so as not to irritate the jaw or the incised area.

2-5 days after surgery

For 2 to 3 days after surgery, tape the jaw to fix the prosthesis inserted in the jaw. If you want to hide the chin fixed with tape, hide it with a mask or the like. The timing to remove the tape differs depending on the medical institution, so please remove the tape at the timing instructed by the doctor.
In addition, there is dull pain for 2 to 3 days after surgery. If you are vulnerable to pain, consult your doctor to prescribe a pain reliever at a medical institution. Makeup is said to be possible from 5 days after the procedure.

1 to 2 weeks after surgery

If you use an insoluble type of thread when suturing the incised lower lip mucosa, you will need to visit a medical institution one to two weeks after surgery to remove the thread. In addition, you cannot brush your teeth for 1 week for the upper teeth and 2 weeks for the lower teeth after surgery, so rinse with mouthwash after eating.

2 to 3 weeks after surgery

After surgery, there is swelling of the jaw and internal bleeding. It is said that it takes about 2 weeks for the swelling to subside and internal bleeding subsides in 2 to 3 weeks.

1 to 3 months after surgery

For 1 to 3 months after the operation, do not apply strong force by massaging the chin with strong force or lying down and sleeping. The prosthesis inserted in the jaw may shift.

Risks and side effects of inserting a prosthesis into the jaw

Calcification can occur after many years of prosthesis insertion

Calcification is a phenomenon in which calcium and phosphoric acid are deposited or deposited in soft tissues (connective tissues excluding bone tissues such as tendons, ligaments, fascia, skin, and adipose tissue) . The human body perceives the inserted prosthesis as a foreign body. A collagen fiber coating is formed around the inserted prosthesis to prevent foreign substances from affecting the body.

Calcium and phosphoric acid are deposited around collagen fibers to cause calcification, which may cause unevenness, swelling, and pain at the site where the prosthesis is inserted . It is said that calcification is likely to occur when there is a gap (dead space) between the bone and the periosteum because the shape and size of the prosthesis to be inserted do not match and the line of the jaw bone does not fit neatly.

References: A case of calcification around the silicone embedded in the cheek

In rare cases, the jaw bone at the prosthesis insertion site is dented due to bone resorption.

If you insert a prosthesis that is not large enough to fit your jaw, the bones will be overloaded and the bones of the jaw that the prosthesis is facing may be slightly dented , resulting in bone resorption. When bone resorption occurs, the prosthesis can sink into the dents in the jaw bone, causing the jaw to move backwards by a few millimeters .

References: Risk factors for Progressive Condylar Resorption after anterior mandibular movement

The prosthesis inserted into the jaw stands out as the skin becomes thinner due to aging

If you insert a prosthesis that does not fit the shape or size of your jaw, the contours of the inserted prosthesis may appear to appear as the skin becomes thinner due to aging . Therefore, do not force a prosthesis of a size or shape that does not fit your jaw.

In rare cases, it may cause an allergic reaction

In rare cases, after inserting the prosthesis into the jaw, it may cause an allergic reaction to the prosthesis . If you have an allergic reaction, you need to remove the prosthesis inserted in the jaw .

In addition, medicines such as painkillers prescribed by medical institutions after surgery may cause an allergic reaction. If you have an allergic reaction to a drug such as a pain reliever, stop using the drug and immediately contact the medical institution where the prosthesis was inserted.

In rare cases, it may cause an infectious disease

Bacteria can enter through the incision when the prosthesis is inserted , which can lead to infections in rare cases . If you have an infection, it is said that the area where the prosthesis is inserted becomes red and swollen and painful within a few days after surgery.

In the unlikely event that you get an infection by inserting a prosthesis, you need to remove the prosthesis once and do not insert the prosthesis until the infection is cured, and administer antibiotics . The prosthesis can be reinserted after the infection has healed.

If the prosthesis needs to be removed due to an infectious disease or allergy, some medical institutions may replace or remove the prosthesis free of charge within one year after insertion.

If you are worried about the cost of removing the prosthesis due to an infectious disease or allergy, it is safe to have surgery at a medical institution that replaces or removes the prosthesis free of charge within one year after insertion.

Pain inserting the prosthesis into the jaw

A local anesthetic injection is given before inserting the prosthesis into the jaw . Therefore, there is a tingling pain in the skin . However, some medical institutions apply an anesthetic cream to the skin and then give a local anesthetic injection to relieve the pain caused by the local anesthetic injection. In addition, since the operation is performed under anesthesia, there is almost no pain .

In addition, some medical institutions prescribe pain-relieving medications to reduce pain after the anesthesia is cut off.

Therefore, please tell your doctor to prescribe a pain reliever at a medical institution after the procedure. It is said that pain after treatment can be suppressed to some extent by using pain-relieving drugs .

Precautions for inserting the prosthesis into the jaw

Smoking prohibited before and after surgery

Smoking impairs blood circulation, resulting in poor healing of wounds. In addition, bacteria can attach and cause infection. It is recommended to quit smoking from 2 weeks before surgery to at least 1 month after surgery .

Do not warm your body such as bathing or exercising after surgery

If you exercise or take a bath after surgery to warm your body, blood flow may improve and swelling and pain may occur. Also, be aware that 24 hours after surgery, bleeding may occur from the incised wound if blood flow improves .

If bleeding occurs from a completely opened wound, lightly hold it with gauze, or wrap an ice pack such as ice or ice pack with gauze and lightly hold it down to stop it. If the bleeding does not stop, please consult the medical institution that underwent surgery.

Jaw with prosthesis inserted will not be re-operated for 4 months after surgery

If you remove the prosthesis after inserting it, for example because it is not in a satisfactory shape, be careful not to re-operate for 4 months after inserting the prosthesis .

It is said that four months after surgery, the wounds tend to remain severely, or the tissues that should have been separated from each other tend to adhere to each other and become deformed . If you wish to have a re-surgery, please schedule a re-surgery according to the doctor's instructions.

The jaw with the prosthesis inserted does not give a strong impact by falling etc.

The inserted prosthesis may be displaced by giving a strong impact to the jaw by falling . Therefore, be careful not to give a strong impact.

Difficult to insert prosthesis at jaw tip

Since it is said that it is difficult to place the prosthesis on the bone of the jaw tip, it is said that it is difficult to insert the prosthesis into the jaw tip and pull it downward . If you want to push your jaw downwards, some medical institutions recommend injecting hyaluronic acid or Lady Esse. For more information, please consult a medical institution that performs hyaluronic acid injection or Lady Esse injection.

Advantages and disadvantages of inserting the prosthesis into the jaw and pushing the jaw forward outside the prosthesis


Method of treatment merit Demerit Treatment time
Prosthesis insertion Semi-permanent lasting effect Use a scalpel
4 months after the procedure when removing the downtime prosthesis for 2 to 3 weeks
About 30 minutes
Hyaluronic acid injection Hyaluronic acid can be removed immediately with a scalpel-free solubilizer with little downtime Requires continuous infusion with a duration of 1 to 2 years About 10 minutes
Lady Esse injection Less downtime without a scalpel Duration is about 10 to 18 months. Continuous injection is required. Lady Esse cannot be removed. About 10 minutes

Advantages and disadvantages of injecting hyaluronic acid into the jaw

Benefits of injecting hyaluronic acid into the jaw

Hyaluronic acid is naturally present in the human body and has the function of maintaining the firmness, elasticity and moisture of the skin. Hyaluronic acid in the human body has extremely high water retention capacity and viscoelasticity, but even if it is injected directly into the jaw, it is easily decomposed by enzymes in the body and absorbed .

However, the hyaluronic acid injected into the jaw artificially binds the hyaluronic acids together by adding something like an adhesive called a cross-linking agent to prevent absorption . However, it does not mean that it is not absorbed semi-permanently, but it is gradually absorbed . Since the strength of hyaluronic acid binding varies depending on the manufacturer that manufactures and sells it, please contact a medical institution for the duration of hyaluronic acid.

Hyaluronic acid injection is completed in about 10 minutes because hyaluronic acid is injected using a needle without using a scalpel. Also, it is said that there is almost no downtime . Hyaluronic acid has an immediate effect because the volume appears at the injection site immediately after injection .

If the amount of hyaluronic acid injected is too large to achieve the ideal jaw shape, hyaluronic acid can be dissolved with a dissolving agent such as hyaluronidase to restore the original jaw shape .

Disadvantages of injecting hyaluronic acid into the jaw

Hyaluronic acid is said to have a short duration because it is gradually decomposed and absorbed by enzymes in the body even if it is crosslinked .

The duration varies depending on the method of cross-linking hyaluronic acid, but it is said to be about 1 month to 2 years . Therefore, continuous infusion is required .

Advantages and disadvantages of injecting Lady Esse

Benefits of injecting Lady Esse into the chin

Lady Esse is an injection containing calcium hydroxyapatite (CaHA), which is composed of calcium and phosphate ions that originally exist in the human body, and can be expected to have the effect of sharply forming the jaw by injecting it into the jaw. I will. Since it is injected through the skin using an injection rather than a surgical operation using a scalpel, it takes about 10 minutes to complete the procedure.

Lady Esse has an immediate effect because the volume appears at the injection site immediately after injection . In addition, downtime is short, and even if swelling, redness, dull pain, internal bleeding, or itching occur, it is said that it will be sedated in about 2 to 3 days .

Disadvantages of injecting Lady Esse into the chin

It is said that the duration after injecting Lady Esse is about 10 to 18 months . Therefore, continuous infusion is required . Also, if you wish to remove it after injecting Lady Esse, unlike hyaluronic acid , Lady Esse does not have a dissolving agent that dissolves the injection material, so it will wait for it to be naturally absorbed into the body and restore the shape of the jaw. ..

Market price for inserting the prosthesis into the jaw

Surgery to insert a prosthesis into the jaw and pull the jaw forward is not covered by insurance for cosmetic purposes and you will be responsible for all costs. The cost varies depending on the shape and size of the prosthesis to be inserted into the jaw, but when inserting a prosthesis originally prepared by a medical institution, the cost price is 150,000 to 400,000 yen .

In addition, if you make a prosthesis to be inserted into the jaw from scratch, or if you want to make a complete order, the cost will be 200,000 to 500 million yen . Anesthesia fee, initial consultation fee, and postoperative visit fee may be required separately.

How to choose a medical institution to insert a prosthesis into the jaw

When inserting the prosthesis into the jaw, it is necessary to insert a prosthesis that does not match the shape and size of the jaw, and in the future, calcium and phosphoric acid will adhere around the prosthesis, causing calcification and removal. Therefore, it is important to choose a medical institution that explains how much shape and size the prosthesis can be inserted during counseling .

Also, depending on the medical institution, you can see a simulation image when the prosthesis is inserted into the jaw using a computer. The doctor can suggest prostheses with different shapes and sizes to be inserted into the jaw, and explain which prosthesis should be inserted based on the simulation image after inserting the prosthesis. Therefore, it is safe to choose a medical institution where you can see the simulation image when the prosthesis is inserted into the jaw using a computer .

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