Eficácia da toxina botulínica tipo A na correção do sorriso gengival: uma revisão de literatura

Abstract

The smile is a facial expression that demonstrates several important feelings for our on-verbal communication, whether of thanks, joy or pleasure. The smile esthetic directly affects our social life and our professional relationships, which is why the search for esthetics procedures in Dentistry has increased. The gingival smile, a multifactorial condition that the gingiva is exposed for more than 3mm when smiling, has for a long time been corrected with complex surgeries, which is why many patients quit from treatment due to morbidity, complexity of the procedure and complicated postoperative period. More recently, botulinum toxin type A appeared as a therapeutic agent in the correction of gingival smile. Its application is practically painless, obtaining immediate results and presenting a smooth postoperative period. Thus, the objective of this work was to evaluate the efficacy of botulinum toxin type A in the treatment of gingival smile. The methodology used was the bibliographic search for scientific articles in Portuguese or English, found in Scielo, PubMed/Medline and Google Scholar databases. According to literature, botulinum toxin type A is effective, even if it’s temporary, in correcting gingival smiles that have muscle hyperactivity as the etiologic factor.