title: Maxillary sensory nerve responses induced by different types of dentures.
abstract: OBJECTIVE
  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).
  
  
  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<PD<CD wearer. The statistical analyses showed that the different types of dentures significantly affected CPTs at 2000 Hz (p<0.0001), 250 Hz (p<0.0001), and 5 Hz (p<0.0001).
  
  
  CONCLUSIONS
  The different types of dentures induce different responses to stimulations in the sensory nerve underlying the denture-supporting mucosa.
authors.affiliation: Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan. kimoto.suguru@nihon-u.ac.jp
authors.forename: Suguru
authors.initials: S
authors.lastname: Kimoto
authors.forename: Nana
authors.initials: N
authors.lastname: Ito
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Nakashima
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Ikeguchi
authors.forename: Hidenori
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Kawai
mesh_terms: D000368:Aged; D003778:Dentures; D006801:Humans; D008437:Maxilla / Q000294:innervation*; D008442:Maxillary Nerve; D009061:Mouth Mucosa / Q000294:innervation; D011984:Sensory Receptor Cells / Q000502:physiology*