Maxillary sensory nerve responses induced by different types of dentures

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• 作者：Suguru Kimoto ; PhD^a ; ^{kimoto.suguru@nihon-u.ac.jp} ; Nana Ito ; DDS^b ; Yoshio Nakashima ; DDS^b ; Nobuyuki Ikeguchi ; DDS^a ; Hidenori Yamaguchi ; PhD^c ; Yasuhiko Kawai ; PhD^a
• 关键词：Current perception threshold ; Denture ; Sensory nerve
• 刊名：Journal of Prosthodontic Research
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：57
• 期：1
• 页码：42-45
• 全文大小：398 K

文摘

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 ¡À 45.8, 53.5 ¡À 25.3, 33.0 ¡À 11.4 (10^?2 mA) respectively. CPTs of CD, PD, and Dent group at 250 Hz were 29.2 ¡À 28.2, 20.1 ¡À 13.2, 14.3 ¡À 5.9 (10^?2 mA) respectively. CPTs of CD, PD, and Dent group at 5 Hz were 28.9 ¡À 23.4, 17.8 ¡À 12.2, 12.2 ¡À 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).

Conclusion

The different types of dentures induce different responses to stimulations in the sensory nerve underlying the denture-supporting mucosa.