title: EMG activity of the orbicularis oculi muscle in normal and in individuals indicated to receive eye prosthesis, before and after its placement.
abstract: To analyze comparatively through electromyography (EMG) the orbicularis oculi muscle from normal patients and those indicated to receive eye prosthesis (treated patients), it was studied 24 male patients with a mean age of 32.5 years old, who were divided into 2 groups as follows: 12 individuals with absence of the left eyeball and indicated to receive prosthesis (treated); 12 normal individuals (control). The work was performed in 4 different clinical conditions: initial resting; normal opening and closure of the eyelids; forced opening and closure of the eyelids and final resting, before and after placement of eye prosthesis. The exams were made using an Electromyograph K6-I Light Channel and Surface Electrodes. By the results obtained under the work conditions, we can conclude that: the use of eye prosthesis did not interfere in the clinical conditions of opening and closure of the eyelid; the loss of the eyeball increases the EMG activity of the orbicularis oculi muscle; the use of eye prosthesis for a period of 7 days, was not enough to diminish the muscular activity, even its perfect adaptation been evidenced clinically.
authors.affiliation: Depart. of Morphology, Faculty of Odontology, UNICAMP, Piracicaba, S.P.
authors.forename: S C Hallak
authors.initials: SC
authors.lastname: Regalo
authors.forename: M
authors.initials: M
authors.lastname: Vitti
authors.forename: M
authors.initials: M
authors.lastname: Semprini
authors.forename: D de Oliveira
authors.initials: Dde O
authors.lastname: Tosello
authors.forename: R A
authors.initials: RA
authors.lastname: Lopes
authors.forename: M da Glória Chiarelo
authors.initials: Mda G
authors.lastname: de Matos
authors.forename: P
authors.initials: P
authors.lastname: Moroni
mesh_terms: D000328:Adult; D004576:Electromyography; D005137:Eye, Artificial; D005143:Eyelids / Q000502:physiology*; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D009915:Orbit