title: The effect of a Lucia jig for 30 minutes on neuromuscular re-programming, in normal subjects.
abstract: The Lucia jig is a technique that promotes neuromuscular reprogramming of the masticatory system and allows the stabilization of the mandible without the interference of dental contacts, maintaining the mandible position in harmonic condition with the musculature in normal subjects or in patients with temporomandibular dysfunction (TMD). This study aimed to electromyographically analyze the activity (RMS) of the masseter and temporal muscles in normal subjects (control group) during the use of an anterior programming device, the Lucia jig, in place for 0, 5, 10, 20 and 30 minutes to demonstrate its effect on the stomatognathic system. Forty-two healthy dentate individuals (aged 21 to 40 years) with normal occlusion and without parafunctional habits or temporomandibular dysfunction (RDC/TMD) were evaluated on the basis of the electromyographic activity of the masseter and temporal muscles before placement of a neuromuscular re-programming device, the Lucia jig, on the upper central incisors. There were no statistically significant differences (p < 0.05) in the electromyographic activity of the masticatory muscles in the different time periods. The Lucia jig changed the electromyographic activity by promoting a neuromuscular reprogramming. In most of the time periods, it decreased the activation of the masticatory muscles, showing that this device has wide applicability in dentistry. The use of a Lucia jig over 0, 5, 10, 15, 20 and 30 minutes did not promote any statistically significant increase in muscle activity despite differences in the data, thus showing that this intra-oral device can be used in dentistry.
authors.affiliation: Department of Restorative Dentistry, Ribeirão Preto Dental School, Univ of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Mariangela Salles Pereira
authors.initials: MS
authors.lastname: Nassar
authors.forename: Marcelo
authors.initials: M
authors.lastname: Palinkas
authors.forename: Simone Cecilio Hallak
authors.initials: SC
authors.lastname: Regalo
authors.forename: Luiz Gustavo de
authors.initials: LG
authors.lastname: Sousa
authors.forename: Selma
authors.initials: S
authors.lastname: Siéssere
authors.forename: Marisa
authors.initials: M
authors.lastname: Semprini
authors.forename: Cristiane
authors.initials: C
authors.lastname: Bataglion
authors.forename: César
authors.initials: C
authors.lastname: Bataglion
mesh_terms: D000328:Adult; D016302:Centric Relation; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000502:physiology; D008410:Masticatory Muscles / Q000502:physiology*; D017090:Occlusal Splints; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology; D013997:Time Factors; D055815:Young Adult