Osorno EC, Díaz TX, Alfaro MP, Romero EG, Ángeles MF, Cruz VA

Language: Spanish
References: 12
Page: 336-340
PDF size: 325.53 Kb.

ABSTRACT

Objective: To identify the changes that occur in the IMR associated to pain and mandibular opening limitation. Material and methods. 35 subjects (mean age 30.62 ± 15.57 years old), male and female were studied. Mandibular opening was classified in two groups (group 1 ≥ 40 mm, group 2 ≤ 40 mm), mandibular movements, TMJ and muscular palpation pain were studied. The IMR was obtained bilaterally with electromyography techniques. inhibitory/potentiatory wave duration was measured. Results. Pain did not affect significatively the IMR; this had statistically significative differences associated to mandibular opening limitation.
Group 1 presented higher values in duration of right inhibition (F=4.42; p=0.043), left (F=7.39; p=0.01-0); amplitude of right inhibition (F=3.811, p=0.059) and left (F=3.145, p=0.085); group 2 presented higher values in duration of right potentiation (F=5.280, p=0.028)left (F=4.117, p=0.051) and in amplitude of right potentiation (F=5.171, p=0.030) left (F= 1.791, p=0.190). Conclusions: Pain did not explain the IMR variations, in contrast the opening mandibular limitation decrease the inhibition duration and increase the duration of the potentiation.

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