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

Purpose This study was done to analyse the influence of fixed dental prosthesis (FDP) on brain function by analysing power spectral density of partially edentulous patients. Materials and Methods The study included unilateral missing mandibular molar replacement patients. The patients were restored with three-unit metal ceramic FDP restorations. The cognitive function was analysed with a mental state questionnaire. Power spectral density (PSD) analysis of EEG alpha waves was made pre- treatment, post treatment and 3 months after FDP treatment to analyse the brain function. The data in various phases were obtained before and after chewing. The results were statistically analysed. Results The mean pre and post treatment PSD was 0.0175 (SD +/- 0.0132) and 0.0178 (SD +/- 0.0135). The mean post treatment PSD after three months was 0.024 (SD +/- 0.019). The results were analysed with repeated ANOVA and were statistically significant. (p<0.01). Conclusion The study displayed improvement in brain function of partially edentulous patients with FDP rehabilitation.