[A preliminary study on the relationship between the wearing time of full denture and EMG in edentulous patients]
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Published on: December 20, 2024
Dan-Ling Yang1, Chun-Hua Yu, Yi Geng
1Department of Prosthetics, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Research Institute of Stomatology, Shanghai 200011, China.
Purpose:
This study was aimed to analyze the relationship between the periods of wearing time of full denture and function of mastication in edentulous patients.
Methods:
Electromyogram (EMG) was done at an initial time of wearing full denture for 30 patients (Group A) and at an interval of wearing full denture for more than 3 months for 32 patients (Group B). EMG activities were recorded for 2 pairs of muscles (anterior temporalis, masseter) by means of Medelec Synergy Electromyography. Student's t test was used for statistical analysis.
Results:
EMG amplitude of Group A was significantly lower than that of Group B (left anterior temporalis P < 0.05, bilateral masseter P < 0.05). Group A has larger area than Group B (P < 0.05); No significant difference was found in asymmetry index between Group A and Group B (P > 0.05).
Conclusion:
The function of mastication in patients who wore full denture for short time has not been achieved as expected.