Power spectrum density analysis for the influence of complete denture on the brain function of edentulous patients - pilot study

Abstract

PURPOSEThis 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.MATERIALS AND METHODSThe 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.RESULTSPower 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).CONCLUSIONThis pilot study showed functional improvement in brain function of edentulous patients with complete dentures rehabilitation.

The Effect of Alteration of Vertical Dimension of Occlusion on Brain Activity in Complete Denture Wearers

“…They reported that chewing was an effective method to stimulate the brain. Perumal et al, 2016 [27] added that restoration of occlusion and masticatory function with satisfactory dentures stimulates the brain activity via trigeminal nerve [27], [15]. Furthermore, the comparative results revealed that the effect of either increasing or decreasing VDO on alpha waves was insignificant.…”

Effect of fixed dental prosthesis on the brain functions of partially edentulous patients – pilot study with power spectrum density analysis

“…Valipour et al ( 18 ), Vialatte et al ( 19 ) displayed the use of EEG and PSD in obtaining improved data when compared to other methods . PSD is an established method of evaluating EEG ( 9 , 19 , 20 ) and spectral parameters can be achieved from all available EEG machines. The use of spatial filters, canonical correlation analysis (CCA) and blind source separation technique (BSS) can effectively reduce the artefacts that might arise with this technique ( 21 ).…”

“…“10-20 electrode placement system” was employed for the procedure which is a standardisation for electrode placement. This standardisation was provided by the international federation in electroencephalography (IFCN) and clinical neurophysiology ( 9 ). EEG recordings were made in three stages.…”