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International journal of odontostomatology

versión On-line ISSN 0718-381X

Resumen

ARISTIZABAL HOYOS, Juan Alberto; LOPEZ SOTO, Olga Patricia  y  LOPEZ SOTO, Lina María. Masseter and Temporalis Muscles Activity and Strength in Rehabilitated Patients with Overdentures Versus Dentate Patients. Int. J. Odontostomat. [online]. 2017, vol.11, n.2, pp.224-230. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2017000200016.

Mastication muscles research help a better understanding of the patient's oral function by allowing quantitative monitoring of their activity and strength. To compare the masseter (M) and the right (RT) and left (LT) temporalis muscles activity and strength in rehabilitated patients with implant overdentures with functional occlusion dentate patients. Cross sectional study, that examined a convenience sample of 28 edentulous lower jaw adults (group) who had undergone an overdenture rehabilitation treatment on two unsplinted implants and 28 dentate adults with stable occlusion (control group). M and T muscle activity was analyzed during mastication. A surface electromyography served to analyze maximum voluntary contraction (MVC) and a mioescanography served to analyze strength. The Mann-Whitney U test was used to compare average results. The MVC average results of the ISD group in microvolts (mV) were RM: 418.93, LM: 456.26; RT: 439.47 mV; LT: 505.54 mV; mastication activity: 198.56 mV; strength in pounds was RM: 0.38 lbs; LM: 0.37 lbs. The control group showed MVC average results in mV: RM: 829.45; LM: 793.53; RT: 830.76; LT: 887,82; mastication RM: 172.79; LM: 182, 89; strength in pounds: RM: 0.53 lbs; LM: 0,53 lbs. Strength exhibited a statistically significant difference of MVC in M and T muscles; and mastication in RT and RM (p <0.05). There are strength and activity muscle differences during maximum voluntary contraction (MVC) and mastication on both masseter and temporalis muscles of rehabilitated patients with implant overdentures compared to dentate patients.

Palabras clave : Temporal muscle; Masseter muscle; Motor activity; Bite force (MESH).

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