Should I get Botox once after my lip repositioning and crown lengthening surgery?

Yes, botox is an effective and cost efficient treatment for a gummy smile. It only requires a few units of botox on each side to provide a degree of relaxation to the upper lip. However, as you know, the treatment will need to be repeated every 3-4 months. A more permanent solution may require corrective jaw surgery. Good luck

Dear anonymous_96,Thank you for your question. Botox can be used to improve a gummy smile by reducing strain on the muscles around the mouth. This must be done with great care and expertise, as improper injection can cause smile asymmetry or even worsen the gummy smile. Make sure your injector is reputable and qualified. As noted, results are only temporary. The only real long term solution is jaw surgery, if that is the cause of your gummy smile, as your lip and teeth have already been addressed. Good luck.Nirmal R. Nathan, M.D.Certified, American Board of Plastic SurgeryMember, American Society of Plastic Surgeons

Hello and thank you for your question.  I use Botox quite frequently for gummy smiles, softening of "smokers lines", and to give a little bit of a upper lip flip.  This is a very easy and successful treatment that has little cost and great benefits for most people.  It usually doesn't take too many units (2-6) to achieve our goal and therefore wont be very expensive. If you are happy with the results, you may find that getting your treatment regularly, your muscles can atrophy a bit and will have less of a pull after a year or so. I suggest seeing a qualified and experienced injector for a consultation.  Best of luck!

Yes, Botox can be used to improve a gummy smile. Botox results resolve in 3-4 months, though in that time, it will prevent those muscles from over-working. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer

Yes, neuromodulators like Botox and Dysport can be used to relax the muscles responsible for a "gummy smile". The results last 3-4 months on average and would need to be maintained with regular re-treatment. 

Your doctor is absolutely correct. Having Botox injected to treat your gummy smile will definitely help with the condition as well as weaken the muscles that are creating the gummy smile. If it is determined that the treatment is helpful, you should continue with such a treatment at least twice or even three times a year. Good luck from New York City

Thank you for your question. 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.
Although Botox is most commonly used in the upper face, it can also be used in various areas in the lower face. Botox can be placed in the levator labii superioris alequae nasii (LLSAN) muscle located just beside the nose on either side to address what is called the gummy smile. The gummy smile is seen in some people whose upper lip elevates so high when they smile that the upper gums are seen in addition to their upper teeth. In this area 2-4 units are used per side. 
The pivotal studies demonstrated that the peak results are seen 14 days after the treatment and most people enjoy their results for 3-4 months. At that point, a maintenance treatment is recommended.
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.
The investment for a Botox treatment varies from office to office. It depends on the region, office, and injector. The total investment also depends on how much product is required, the areas treated, and the individual. For example, if someone has a larger forehead, a higher dose will be required. If multiple areas such as frown lines and crow’s feet will be treated the investment will be more than that if only a single area is treated. In general, men have stronger muscles than women both on the body and on the face. For this reason, men usually require higher doses than women. Please click the link above for more information. I recommend that patients look for a qualified injector instead of the best price. Look for experience, before and after photographs, and testimonials. The investment range for a Botox treatment is $200 - $500 per area. Areas include frown lines, crow’s feet, etc. Since only a few units are used for the gummy smile, the investment is generally less than $100.
Please consult with a doctor for specific recommendations. Good luck!