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Maxillary sensory nerve responses induced by different types of dentures
Suguru Kimoto1, Nana Ito, Yoshio Nakashima
1Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan. kimoto.suguru@nihon-u.ac.jp
Purpose:
The purpose of this study was to investigate whether different types of dentures induced different responses to stimulations in sensory nerve underlying the denture-supporting mucosa using current perception threshold (CPT).
Materials And Methods:
The study population comprised 45 complete denture wearers with a mean age of 69.7 years (CD), 30 partial denture wearers (PD) with a mean age of 67.1 years, and 40 dentulous participants with a mean age of 69.0 years (Dent). Current perception threshold (CPT) on the greater palatine nerve at 2000 Hz, 250 Hz, and 5 Hz, corresponding to A-beta, A-delta, and C fibers respectively, were measured by the Neurometer® NS3000 device. The differences CPTs among CD, PD, and Dent groups were analyzed by Kruskal-Wallis test and Mann-Whitney U test with adjusting the multiple comparisons' inflation of type 1 error rate by a Bonferroni correction.
Results:
CPTs of CD, PD, and Dent group at 2000 Hz were 61.5±45.8, 53.5±25.3, 33.0±11.4 (10(-2) mA) respectively. CPTs of CD, PD, and Dent group at 250 Hz were 29.2±28.2, 20.1±13.2, 14.3±5.9 (10(-2) mA) respectively. CPTs of CD, PD, and Dent group at 5 Hz were 28.9±23.4, 17.8±12.2, 12.2±5.6 (10(-2) mA) respectively. The CPTs at all frequencies increased in the following order: Dent
Conclusion:
The different types of dentures induce different responses to stimulations in the sensory nerve underlying the denture-supporting mucosa.
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