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Which muscle is commonly treated with Botox to address marionette lines?

  1. Frontalis

  2. Zygomatic major/minor

  3. Masseter

  4. Orbicularis oculi

The correct answer is: Zygomatic major/minor

The zygomatic major and minor muscles are correctly identified as the muscles commonly treated with Botox to address marionette lines. Marionette lines are the folds that run from the corners of the mouth down to the chin, which can make a person appear sad or older. These lines are often formed due to the action of the zygomatic muscles, which play a key role in facial expressions, particularly smiling. When Botox is injected into the zygomatic major and minor, it relaxes these muscles, reducing the movement that contributes to the formation of marionette lines. This treatment can create a smoother appearance around the mouth, improving the overall aesthetic of the lower face. Other muscles mentioned, such as the frontalis, masseter, and orbicularis oculi, serve different functions in facial expression and are targeted for other concerns—forehead lines, jaw clenching, and crow's feet, respectively—but they are not directly involved in the formation of marionette lines. Hence, the focus on the zygomatic major and minor for this specific concern highlights their significance in both function and aesthetics in relation to marionette lines.