Botulinum toxin type-A has also been Utilized in the treatment of gummy smiles;[167] the material is injected into the hyperactive muscles of upper lip, which causes a discount from the upward movement of lip As a result causing a smile with a much less publicity of gingiva. Kids who https://botulinum-toxins50334.wikimeglio.com/9890413/about_botulinum_toxins_a_and_b