IADR Abstract Archives
Analysis of the masticatory function in subjects with different BMI.
Objectives: The objective of this study was to evaluate the masticatory function of the superficial muscles of mastication by using surface electromyography (sEMG), kinematic characteristics and Maximum Functional Bite Force (MFBF) in subjects with different Body Mass Index (BMIs).
Methods: A cross-sectional observational study was carried out. The BMI evaluation was made with a Health O’ Meter®. Ten participants aged 24 ± 3.8 years were classified in two groups: Five were Normal (18.5-24.9) and Five were Obese (≥30), The Chewing evaluation was performed by using Electromagnetic Articulograph(EMA), all the patients were asked to chew 3.7 g of peanuts (3 repetitions). MFBF was evaluated with GM10 Occlusal Force Sensor and the electromyographic activity of the masticatory muscles was assessed with sEMG.
Results: In the kinematic characteristics of chewing evaluation (Table 1), no significant differences were found between groups. MFBF and electromyographic activity for each group were described in Table 2. Significant differences were found when comparing EMG activity in the right temporalis muscle in both groups (p= 0.03). The MFBF mean was correlated with the masticatory frequency, with a weak positive correlation in the normal group (0.100) and a weak negative correlation for the obese group (-0.200). The correlation between MFBF with chewing speed was null in the normal group (0.000). However, a weak positive correlation was found in the obese group (0.300).
Conclusions: Our results are inconclusive regarding the kinematic characteristics of chewing and MFBF in the groups. The normal group presented greater electromyographic activity than the obese group in all the muscles analyzed, this means that a higher value BMI, lower is the electromyographic activity that is registred. In order to continue this study, a higher sample is needed to determine significant differences between groups.
Methods: A cross-sectional observational study was carried out. The BMI evaluation was made with a Health O’ Meter®. Ten participants aged 24 ± 3.8 years were classified in two groups: Five were Normal (18.5-24.9) and Five were Obese (≥30), The Chewing evaluation was performed by using Electromagnetic Articulograph(EMA), all the patients were asked to chew 3.7 g of peanuts (3 repetitions). MFBF was evaluated with GM10 Occlusal Force Sensor and the electromyographic activity of the masticatory muscles was assessed with sEMG.
Results: In the kinematic characteristics of chewing evaluation (Table 1), no significant differences were found between groups. MFBF and electromyographic activity for each group were described in Table 2. Significant differences were found when comparing EMG activity in the right temporalis muscle in both groups (p= 0.03). The MFBF mean was correlated with the masticatory frequency, with a weak positive correlation in the normal group (0.100) and a weak negative correlation for the obese group (-0.200). The correlation between MFBF with chewing speed was null in the normal group (0.000). However, a weak positive correlation was found in the obese group (0.300).
Conclusions: Our results are inconclusive regarding the kinematic characteristics of chewing and MFBF in the groups. The normal group presented greater electromyographic activity than the obese group in all the muscles analyzed, this means that a higher value BMI, lower is the electromyographic activity that is registred. In order to continue this study, a higher sample is needed to determine significant differences between groups.