Plastic Surgeon Dr. Dean Kane of Baltimore Answers Question Regarding Botox 
Q. Do you recommend Botox around the mouth to prevent corners of the mouth from drooping?
A. Consider the mouth like a bicycle tire with a round set of lip muscle within the tire and spoke like muscles radiating outwardly. The central round muscles purse the lips into a “kiss”. The radiating muscles pull the lip circle into its various shapes and openings.
A pair of the radiating muscles called the DAO (depressor anguli oris) pull the mouth / lips toward the 4 o’clock and 8 o’clock direction. When this muscle is relaxed with Botox, it allows the 5 pairs of muscles above the horizontal line of the lip corners to lift upwardly.
Should too much or too many muscles above the lip be relaxed, the lower lip radiating muscles may pull the oral complex lower, toward the jawline.
The use of Botox is a balancing act. Your injector must understand the dynamics and amounts of Botox to use to achieve your desired appearance. This is an advanced technique and not easily understood by all injectors. Please choose a Board Certified, talented, artful, skillful and experienced Plastic Surgeon to review and perform your injections.
