Int J Prosthodont. 2023 May 26. doi: 10.11607/ijp.7936. Online ahead of print.
ABSTRACT
PURPOSE: The effect of single tooth replacement in brain activity is indistinct. Hence, to evaluate the changes in brain activity of individuals with a single missing mandibular molar replaced with removable, tooth-supported fixed, and implant prostheses in the static and post-masticatory phase.
MATERIAL AND METHODS: 24 patients with unilateral missing mandibular first molar were rehabilitated with a resin removable prosthesis (RPD) and then divided into two groups of 12 each; group A rehabilitated with implants and group B with 3-unit tooth-supported fixed partial dentures (FPD). EEG was taken during the three phases of assessment (i)before insertion of any prosthesis(N0), (ii)after insertion of an RPD(N1), and (iii)after cementation of an FPD or an implant crown(F2). The effect of the bite force with RPD(N1M) and FPD or implant prosthesis(F2M) on alpha waves was evaluated by recording EEG immediately after chewing gum for 30 seconds.
RESULTS: The improvement of the amplitude of alpha waves before and after insertion of the prosthesis between group A and B showed a significant difference (P<.05) with the highest mean value of 158.3 μV, 147.9 μV, 182.1 μV in pair F2-N0, F2-N1, F2M-N1M respectively for Group A. Similarly, for the power of alpha waves between group A and B, a significant statistical difference (P<.05) with the highest mean value of 30.3 dB, 28.9 dB, 36.9 dB, 11.2 dB in pair F2-N0, F2-N1, F2M-N1M, F2M-F2 respectively were observed for Group A. There was no statistically significant increase in pair N0-N1(P<.05).
CONCLUSIONS: Replacement of a single missing tooth enhanced brain activity and was highest with an implant-supported crown. Int J Prosthodont 2023. doi: 10.11607/ijp.7936.
PMID:37235830 | DOI:10.11607/ijp.7936
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