IADR Abstract Archives
Relationship between Electromyographic Activity of the Musculature and Removable Prosthesis.
Objectives: Patients wearing removable prostheses commonly have insufficient retention, support and stability of their devices. This condition can alter the balance between the physiological components of the stomatognathic system, affecting the TMJ and muscular health.
The purpose of the study was to compare the electromyographic activity of the mandibular levator muscles in patients with removable partial dentures, before and after the stabilization of them, in the positions of maximum intercuspation, mandibular postural position and maximum voluntary tightening.
Methods: Sixteen subjects with an average age of 59 years who met the inclusion and exclusion criteria were selected. With prior informed consent, records of the surface electrical activity were made bilaterally of the anterior temporal and superficial masseter muscles. Measurements were made before and after stabilization of removable prosthetic devices with a one-week interval. The data obtained was analyzed with STATA 14.1 software. For the distribution of data, the Shapiro-Wilk Test was used and then, the paired T Test was performed for the comparative analysis of the samples. A significance of P <0.05 was used.
Results:
No statistically significant differences (p <0.05) were found in any of the three positions recorded when comparing the electromyographic activity before and after the stabilization of the removable partial dentures.
Conclusions: Future research is needed with better standardization of the location of surface electrodes, definition of the study population and its characteristics. Likewise, the design of the prosthesis to be evaluated and the type of repair to be performed. We also believe it is important to increase the follow-up time. Thus, results with a clear trend can be obtained that allow evaluating the validity of stabilizing the removable prostheses of the patients prior to registering the maxillo-mandibular relationships in their oral rehabilitation treatments.
The purpose of the study was to compare the electromyographic activity of the mandibular levator muscles in patients with removable partial dentures, before and after the stabilization of them, in the positions of maximum intercuspation, mandibular postural position and maximum voluntary tightening.
Methods: Sixteen subjects with an average age of 59 years who met the inclusion and exclusion criteria were selected. With prior informed consent, records of the surface electrical activity were made bilaterally of the anterior temporal and superficial masseter muscles. Measurements were made before and after stabilization of removable prosthetic devices with a one-week interval. The data obtained was analyzed with STATA 14.1 software. For the distribution of data, the Shapiro-Wilk Test was used and then, the paired T Test was performed for the comparative analysis of the samples. A significance of P <0.05 was used.
Results:
No statistically significant differences (p <0.05) were found in any of the three positions recorded when comparing the electromyographic activity before and after the stabilization of the removable partial dentures.
Conclusions: Future research is needed with better standardization of the location of surface electrodes, definition of the study population and its characteristics. Likewise, the design of the prosthesis to be evaluated and the type of repair to be performed. We also believe it is important to increase the follow-up time. Thus, results with a clear trend can be obtained that allow evaluating the validity of stabilizing the removable prostheses of the patients prior to registering the maxillo-mandibular relationships in their oral rehabilitation treatments.