Thank you for your question paternguyen123. I understand your concern. Botox is a purified protein used to address wrinkles associated with facial expression. When injected into the skin Botox will relax the muscles and smoothen out the overlying wrinkles. The most common areas of treatment are in the upper face. These include the horizontal lines seen on the upper forehead when one raises the brows, the vertical lines seen between the brows when one frowns (frown lines), and the crow's feet seen around the eyes when one smiles.It is difficult to make an assessment without a formal exam in the office where I can view the skin in multiple angles and observe wrinkles formed with facial expression. However, I hope the information provided here is useful.Botox can be placed in the masseter muscle in the lower face to contour the lower face and address pain associated with TMJ. In this area 20-40 units of Botox are used per side. Depending on the reason for the enlargement of the muscle, permanent results may be achieved. For example, some people have a habit of grinding, clenching, or biting their teeth subconsciously. Often times this happens in their sleep when they are not aware of it. Botox placed in this muscle will relax the muscle and the grinding, clenching, and/or biting will decrease. This will reduce the size of the muscle. If the brain gets accustomed to this and the person stops grinding, clenching, or biting, then the muscle will not become enlarged or as enlarged again. However, if the habit starts again, the muscle will likely get larger.A phenomenon seen with Botox is called muscle recruitment and compensation. When a muscle has been relaxed with Botox, sometimes other muscles are recruited and contract when one attempts to make the facial expression. This serves to compensate for the inability of the primary muscle to contract. Sometimes a bulge can appear in a muscle that was untreated or a part of a muscle that was not treated. A common example is the bunny lines (caused by contraction of the nasalis muscle) that are seen on the sides of the upper nose after treatment with Botox in the glabella or for the crow's feet. Since the muscles in the treated area are relaxed, the nasalis muscle contracts in an attempt to compensate for this loss when one frowns or smiles. In such a situation, the bunny lines can be treated with a small amount of Botox (2-4 units per side). In the lower face, compensatory recruitment can occur when the platysma muscle in the neck contracts after muscles in the lower face have been relaxed with Botox. Similarly, this muscle can be relaxed with Botox as well. For my patients, I usually use approximately 10 units per band. If placed properly it does not affect other muscles. Relaxing the platysma muscle may also lead to an improvement of jowls and jawline definition. When such recruitment occurs, I recommend prophylactic (preventive) treatment of the recruited muscles at the next treatment. If the entire masseter muscle was not treated, certain areas can contract more strongly in order to compensate, leading to the appearance of a bulge. Additional units in this area would likely be helpful.With any injection, there are risks such as pain, bleeding, bruising, redness, swelling, tenderness, and infection. We take special precautions to minimize these risks such as using a painless technique. We also treat bruises with a laser as early as the next day. Bruises usually resolve within two weeks if untreated. After a laser treatment bruises usually resolve in 1-3 days, but may still take two weeks for full resolution. In addition to these risks, with Botox there is also a risk that the product spreads or diffuses to nearby structures. Spread to nearby muscles can lead to side effects such as the temporary appearance of droopy eyelids or a temporary asymmetric smile.After a Botox treatment, I recommend that my patients avoid heat exposure, alcohol consumption, and strenuous exercise for 24 hours and not lie down flat for four hours. This is because all of these activities may possibly lead to the movement of the product and consequent side effects such as droopy eyelids as described above. Although there have been no definitive studies shown that these actually occur and some physicians do not provide such aftercare instructions, in the absence of data I err on the side of caution and recommend that my patients avoid such activities.Please consult with a doctor for specific recommendations. Good luck!
