2023 Fiscal Year Final Research Report
Effect of tryptophan for sleep bruxism
| Project/Area Number |
20K18805
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 57080:Social dentistry-related
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| Research Institution | Okayama University |
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Principal Investigator |
Toyama Naoki 岡山大学, 医歯薬学域, 助教 (50803152)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 睡眠時ブラキシズム / 栄養素 |
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| Outline of Final Research Achievements |
The purpose of the present research was to identify nutrients related to sleep bruxism and to establish a hypothesis regarding the relationship between sleep bruxism and nutrients.
We recruited 143 Japanese university students in 2021 and assigned them to sleep bruxism (n = 58) and non-sleep bruxism groups (n = 85. To investigate nutrient intakes, participants answered a food frequency questionnaire based on food groups. We assessed differences in nutrient intakes between the sleep bruxism and non-sleep bruxism groups. As a result, We showed that sleep bruxism tended to be associated with dietary fiber. In addition, a subgroup analysis showed that students with sleep bruxism had a significantly lower dietary fiber intake (10.4 ± 4.6 g) than those without sleep bruxism (13.4 ± 6.1 g; p = 0.022).
The present research showed that dietary fiber intake may be related to sleep bruxism. Therefore, we hypothesized that dietary fiber would improve sleep bruxism in young adults.
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| Free Research Field |
口腔衛生学
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| Academic Significance and Societal Importance of the Research Achievements |
睡眠時ブラキシズムは多因子性であり，睡眠時ブラキシズムとの関連因子が多数報告されているが，栄養素と睡眠時ブラキシズムとの関連性を明らかにした研究は本研究が世界で初めてである．
本研究は睡眠時ブラキシズムと栄養との関連に関する今後の介入研究の方向性を決める研究であり，栄養学的に口腔保健を改善できることを示唆する学術的意義は大きい．今後は，食物繊維が睡眠時ブラキシズムに与える影響を明らかにすることが期待される．
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