Abstract
This study analyzes the efficacy of occlusal devices for the long-term stability of contouring of the lower face by injection of Botulinum toxin type A in a prospective clinical protocol. Ten patients (seven female and three male) with a widened lower face were recruited consecutively between January 2006 and January 2007. Each patient was advised to wear an occlusal device to release masticatory muscles, and percutaneous intramuscular injections of Botulinum toxin type A were used. The follow-up study was 18 months. Facial changes were noted by the patients as early as 2 weeks after the injection and lasted for 18 months; all patients reported an improved facial profile. There were no complications. Botulinum toxin type A injection for the contouring of the lower face is a simple technique, has few side effects, and allows a rapid return to daily life. In our study, the long-term stability of the result is related to the occlusal therapy performed after the injection of botulinum toxin type A.
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