2012 Fiscal Year Final Research Report

Relationship between malocclusion and stress and autonomic nerve balance

Research Project

Project/Area Number	22592331
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Social dentistry
Research Institution	Okayama University
Principal Investigator	TAKEUCHI Noriko 岡山大学, 大学院・医歯薬学総合研究科, 助教 (50403473)
Co-Investigator(Kenkyū-buntansha)	MURAKAMI Takashi 岡山大学, 岡山大学病院, 助教 (00534786) MORITA Manabu 岡山大学, 大学院・医歯薬学総合研究科, 教授 (40157904) EKUNI Daisuke 岡山大学, 岡山大学病院, 講師 (70346443) TOMOFUJI Takaaki 岡山大学, 岡山大学病院, 講師 (80335629)
Project Period (FY)	2010 – 2012
Keywords	不正咬合 / 自律神経バランス
Research Abstract	It is reported that malocclusion induces psychological stress and psychological stress cause imbalance in the autonomic nerve balance. However, it is unclear whether malocclusion adversely affects autonomic nerve balance. The aim of this study is to clarify the influence of malocclusion on the autonomic nerve balance. We collected the data of 51 orthodontic patients who expressed informed consent. Following orthodontic treatment, masticatory capacity and SDNN increased, and Ln(LF/HF) which was an index of the sympathetic nerve activity decreased. In addition, HF(n.u) tended to increase. Increase in masticatory function might lead to stress improvement.

(2 results)