Uncovering Square Jaw Botox - One Muscle, Yet Not Just One? | Episode Dermatology, Jamsil EPISODE CLINIC

"I got Botox for my square jaw, but why can I still feel the muscle?"

This is a story often heard in the counseling room.

The reason why the results differ even with the same square jaw Botox masseter muscleIt is located inside the muscle called.

Hello. I am Seo Min-ho, the representative director of EPISODE CLINIC .

Today, I will summarize square jaw Botox in order, from muscle structure to dosage and cheek hollowing.

1. The masseter muscle is one, but it is not one.

Square jaw Botox is an injection administered into the masseter muscle.

The masseter muscle looks like a single muscle, but it is actually divided into two layers.

Outside SB(superficial belly)and inside DB(deep belly)no see.

The SB and DB of the masseter muscle and the DIT between them

And between the two floors DIT(deep inferior tendon)There is a tendon layer called...

This DIT prevents the spread of Botox.

Therefore, if injected into only one layer, the Botox cannot spread to other layers, resulting in only a half-effect.

If you inject into only one layer

The DIT blocks the flow of the drug, preventing it from reaching the DB. Only a half-effect is produced.

If you inject it layer by layer

The medication is injected into SB and DB respectively and acts evenly throughout the entire masseter muscle.

Layered structure of the masseter muscle and injection method (conceptual diagram)

In the EPISODE SBand DBDivide it and inject it layer by layer.

2. The capacity is determined by muscle size and strength.

The principle behind Botox dosage is simple.

muscles The bigger, thicker, and stronger it is More capacity is needed.

Thin muscles like the eyelids only require a few units, while large muscles like the trapezius or calves go up in units of 100 units.

The larger and stronger the muscles, the higher the capacity.

eye area

8~20U

between the eyebrows

10~20U

temporalis muscle

30~70U

square jaw (mastoid muscle)

50~100U

trapezius, calf

100~300U

Both sides total, based on Botulinum Toxin Type A, bar positions on a logarithmic scale (individual differences may apply)

The masseter muscle is thick and strong because it is the muscle that clenches the molars tightly.

Total of both sides 50~100U This is the commonly used range.

This is based on Botulinum Toxin Type A, and products with different unit systems, such as Dysport, may have different notations.

The reason the range differs by as much as twofold is that the masseter muscle varies from person to person.

If the dosage is insufficient, the effect is weak and wears off quickly, so you will need to be injected more frequently.

If the amount is excessive, your cheeks may look sunken or you may find it difficult to chew quickly.

Criteria for determining masseter muscle dosage

Muscle thickness

The thickness and range of the masseter muscle felt when clenching the molars tightly

Muscle strength

Whether you use your muscles a lot, such as with teeth clenching, tough foods, or teeth grinding

Left and right difference

Since the masseter muscle on the chewing side is often larger, it is distributed separately to both sides.

Risk of cheek hollowing

The ratio of the upper and lower parts, the original cheek fat, and the volume below the cheekbones.

past records

Where and how much was put last time and how it reacted

3. The masseter muscles on both sides are not the same.

Even within a single person's face, the masseter muscles on both sides differ in size.

The chewing side is usually larger and harder.

So, instead of putting the same amount into both sides, I feel the left and right sides separately and divide the amount.

Checking directly before the procedure

promotion

Have the patient clench their molars tightly and check the thickness and extent of the masseter muscle on both sides by palpating.

Left and right comparison

Check the size difference between the two sides and divide the capacity separately for the left and right.

Muscles and salivary glands

If it is soft and bulging without hardening when bitten, it is highly likely to be a salivary gland.

Upper and lower

We determine the injection points by assessing whether the face is concerned about sunken cheeks.

4. If you are worried about sunken cheeks

The most common concern heard during square jaw Botox consultations is cheek hollowingno see.

The masseter muscle can also be viewed in upper and lower sections. Below the cheekbone upperWow, the jaw angle lowerno see.

Upper and lower

The masseter muscle is divided into the upper part below the cheekbone and the lower part on each side of the jaw.

Above the dotted line: Top, Below the dotted line: Bottom

Inject mainly into the lower part

Distribute the dosage centering on the lower part of each side of the jaw.

Compensatory action of the upper part

As the lower masseter muscle relaxes, the upper masseter muscle enlarges compensatorily, which can alleviate sunken cheeks.

Lower-focused injection and upper-focus compensatory action (conceptual diagram; individual differences apply)

In the EPISODE, we proceed mainly with the lower part.

If the lower part weakens, the upper masseter muscle takes on more of the chewing task, and as the upper part enlarges compensatorily, rather Relief of sunken cheeksIt can be.

The less cheek fat a person naturally has, the further down the injection should be placed.

5. Please check the product and capacity right in front of you.

To be honest, I feel a bit regretful even as I write this. That is because it is so basic and obvious.

With Botox, you cannot tell the product or the dosage just by looking at it.

The syringe contains only a transparent liquid.

Checking the Botox product and dosage right before your eyes before the procedure

So, in the EPISODE, we check the products to be used before the procedure, open them in front of you, and prepare the medicine.

I also tell you the injection volume (unit) exactly as it is and record it in the procedure report.

It is a basic rule that should naturally be followed, and it is unfortunate that I have to explain this separately.

No matter where you get the procedure, make sure to check this at least.

6. In conclusion..

For square jaw Botox, while the number of units injected into the masseter muscle is important, the method is even more important.

masseter muscle Two floorsWhether to fill in all of them, Both sizesWhether to divide according to, Considering cheek hollowingThe result varies depending on where you put it.

We've dug into square jaw Botox, the most frequently performed Botox (botulinum toxin) procedure!

I will conclude this post hoping that it has been of at least some help. Thank you.