EVIDÈNCIA CIENTÍFICA
* DS Gil, FB Naini, CJ Tredwin. Smile aesthetics. SADJ. 2008;63:270,272-5.
* AF Cengiz, M Goymen, C Akcalic. Efficacy of botulinum toxin for treating a gummy smile. Am J Orthod Dentofacial Orthop. 2020;158:50-8.
* AW Machado. 10 commandments of smile esthetics. Dental Press J Orthod. 2014;19:136-57.
* VO Kokich Jr, HA Kiyak, PA Shapiro. Comparing the perception of dentists and lay people to altered dental esthetics. J Esthet Dent. 1999;11:311-24.
* M Polo. Botulinum toxin type A in the treatment of excessive gingival display. Am J Orthod Dentofacial Orthop. 2005;127:214-8.