title: Power spectrum density analysis for the influence of complete denture on the brain function of edentulous patients - pilot study.
abstract: OBJECTIVE
  This pilot study was to find the influence of complete denture on the brain activity and cognitive function of edentulous patients measured through Electroencephalogram (EEG) signals.
  
  
  METHODS
  The study recruited 20 patients aged from 50 to 60 years requiring complete dentures with inclusion and exclusion criteria. The brain function and cognitive function were analyzed with a mental state questionnaire and a 15-minute analysis of power spectral density of EEG alpha waves. The analysis included edentulous phase and post denture insertion adaptive phase, each done before and after chewing. The results obtained were statistically evaluated.
  
  
  RESULTS
  Power Spectral Density (PSD) values increased from edentulous phase to post denture insertion adaption phase. The data were grouped as edentulous phase before chewing (EEG p1-0.0064), edentulous phase after chewing (EEG p2-0.0073), post denture insertion adaptive phase before chewing (EEG p3-0.0077), and post denture insertion adaptive phase after chewing (EEG p4-0.0096). The acquired values were statistically analyzed using paired t-test, which showed statistically significant results (P<.05).
  
  
  CONCLUSIONS
  This pilot study showed functional improvement in brain function of edentulous patients with complete dentures rehabilitation.
authors.affiliation: Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, India.
authors.forename: Praveen
authors.initials: P
authors.lastname: Perumal
authors.affiliation: Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, India.
authors.forename: Gopi Naveen
authors.identifier: 0000-0002-2040-4550
authors.initials: GN
authors.lastname: Chander
authors.affiliation: Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, India.
authors.forename: Kuttae Viswanathan
authors.initials: KV
authors.lastname: Anitha
authors.affiliation: Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, India.
authors.forename: Jetti Ramesh
authors.initials: JR
authors.lastname: Reddy
authors.affiliation: Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, India.
authors.forename: Balasubramanium
authors.initials: B
authors.lastname: Muthukumar
keywords: Brain activity; Complete denture; Electroencephalography; Fast Fourier Transform; Geriatric; Power Spectral Density