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 Table of Contents  
ORIGINAL STUDY COMPETITION
Year : 2018  |  Volume : 18  |  Issue : 5  |  Page : 22

OSC34: Neuroscientific evaluation of periodontal tactile with/without sensory integration task: Comparison between incisor and molar teeth


Date of Web Publication31-Oct-2018

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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4052.244625

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How to cite this article:
. OSC34: Neuroscientific evaluation of periodontal tactile with/without sensory integration task: Comparison between incisor and molar teeth. J Indian Prosthodont Soc 2018;18, Suppl S1:22

How to cite this URL:
. OSC34: Neuroscientific evaluation of periodontal tactile with/without sensory integration task: Comparison between incisor and molar teeth. J Indian Prosthodont Soc [serial online] 2018 [cited 2018 Nov 20];18, Suppl S1:22. Available from: http://www.j-ips.org/text.asp?2018/18/5/22/244625



Takahiro Kishimoto, Takaharu Goto, Tetsuo Ichikawa

Department of Prosthodontics and Oral Rehabilitation, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan

Aims: Oral cavity has various somatosensory receptors and many researches have discussed the relationship between oral sensation and brain function. We have reported that periodontal tactile input influences cerebral blood flows in the prefrontal cortex (CBFs-PFC). The purpose of this study was to investigate the differences of the PFC activities in biting between either incisor or molar teeth with/without sensory integration tasks, and assess the significance of periodontal tactile for the PFC activities.

Materials and Methods: We enrolled 11 healthy young subjects (7 males and 4 females, age: 28±3.71). The CBFs-PFC was measured using a wearable near infrared spectroscopy (Hitachi, Tokyo, Japan). The tested teeth were central incisor and first molar. The experimental task to keep the occlusal force between 27.5±2.5 N was performed, and visual and auditory information were provided to keep occlusal force as sensory integration task. For non-sensory integration task, subjects were asked to bite the resin or silicone rubber block.

Results: Significant increase in CBFs-PFC was observed through the sensory integration task by molar compared to that by incisor teeth. Conversely, no significant difference was found between incisor and molar teeth through the non-sensory integration task. The CBFs-PFC in the sensory integration task had a tendency to increase compared to those in the non-sensory integration task.

Conclusion: Although the differences of the PFC activities in biting by either incisor or molar teeth were found in just the sensory integration task, the influence of sensory integration task with periodontal tactile on the PFC activities would be high compared with that of the non-sensory integration task.






 

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