title: Electromyographic Evaluation of the Effect of Lined Dentures on Masticatory Muscle Activity in Edentulous Subjects.
abstract: OBJECTIVE
  The purpose of this study was to examine changes in relative electromyographic (EMG) activities of temporal and masseter muscles after relining the dentures with silicone and acrylic-resin based denture liners.
  
  
  METHODS
  Conventional complete dentures were fabricated for 20 edentulous patients. One month after completing adjustments of the dentures, electromyography of the masseter and temporalis muscle during maximum intercuspation was recorded. The dentures were then relined with a silicone denture liner and after an adaptation period of one month, were again subjected for electromyographic evaluation. Further, the dentures were relined with acrylic denture liner and subjected to electromyographic evaluation. Data was analysed using Statistical Package for Social Sciences (SPSS) version 15.0. Intergroup comparisons were done using ANOVA followed by post-hoc assessments using Tukey HSD test.
  
  
  RESULTS
  Mean amplitude and duration with conventional dentures was found to be significantly lower as compared to silicone lined and acrylic lined dentures for all the comparisons. Statistically, no significant difference between silicone lined and acrylic lined dentures was observed for any of the comparisons.
  
  
  CONCLUSIONS
  Within the limitations of this experimental design, it was concluded that relining significantly increases electromyographic activity of the masseter and temporalis muscles. Thus, resulting in an improved biting force, chewing efficiency and masticatory performance. There were no significant differences between silicone and acrylic based denture liners for both electromyographic variables.
authors.affiliation: Reader, Department of Prosthodontics, Saraswati Dental College and Hospital , 233, Tiwari Ganj, Faizabad Road, Lucknow, (U.P.), India .
authors.forename: Abhishek
authors.initials: A
authors.lastname: Rastogi
authors.affiliation: Reader, Department of Prosthodontics, Sardar Patel Dental College and Hospital , Lucknow, (U.P.), India .
authors.forename: Shitij
authors.initials: S
authors.lastname: Srivastava
authors.affiliation: Senior Lecturer, Department of Prosthodontics, Saraswati Dental College and Hospital , Lucknow, (U.P.), India .
authors.forename: Abhishek
authors.initials: A
authors.lastname: Gaur
authors.affiliation: Professor, Department of Prosthodontics, Saraswati Dental College and Hospital , Lucknow, (U.P.), India .
authors.forename: Arun
authors.initials: A
authors.lastname: Dupare
authors.affiliation: Student, Department of Prosthodontics, Saraswati Dental College and Hospital , 233, Tiwari Ganj, Faizabad Road, Lucknow, (U.P.), India .
authors.forename: Shiksha
authors.initials: S
authors.lastname: Rastogi
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, School of Dental Sciences , Karad, Maharastra, India .
authors.forename: Laxmikant
authors.initials: L
authors.lastname: Kamatagi
keywords: Electromyography; Masseter muscle and temporalis muscle; Silicone and acrylic denture liners