| Autor: |
Yu Takaesu, Takashi Hanioka, Nao Suzuki, Marie Naito, Miki Ojima |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Tobacco Induced Diseases, Vol 17, Iss 1 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1617-9625 |
| DOI: |
10.18332/tid/111482 |
| Popis: |
Objective Earlier studies on crevicular fluid flow and gingival blood flow indicated increased gingival blood flow after smoking. In this study, we measured gingival blood flow following heated tobacco smoking. Methods We used a laser Doppler flowmeter (LDF) with different optic-fiber separations of 0.3 mm (LDF-0.3) and 0.7 mm (LDF-0.7). We have confirmed that the LDF-0.3 and difference between LDF-0.7 and LDF-0.3 (LDF-d) represented gingival blood flow in superficial fraction and deeper fraction, respectively. Eight heated-tobacco smokers consuming 4-25 daily volunteered and were asked not to smoke at least 5 h before the experiment. Gingival blood flow of upper papillary gingiva of frontal teeth was measured before and after smoking. Subjects smoked heated tobacco for about 5 min. Results Changes in LDF-0.3 and LDF-d after smoking were not statistically significant. However, LDF-0.7 significantly decreased after smoking (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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