@article{oai:asahi-u.repo.nii.ac.jp:00013899,
 author = {永井, 裕子 and 永原, 國央 and NAGAHARA, KUNITERU and 山村, 理 and 藤原, 周 and FUJIWARA, SHUU and 飯沼, 光生 and IINUMA, MITSUO and 磯崎, 篤則 and ISOZAKI, ATSUNORI and 勝又, 明敏 and 堀田, 正人 and HOTTA, MASATO},
 issue = {2003-10-20},
 journal = {2003-10-20},
 month = {2003-10-20, 2022-05-16},
 note = {There are many causes of halitosis (bad breath). It is well known that bacterial plaque and tongue coating are the main caused of physiologic halitosis due to oral hygiene. There are many people who care about halitosis. Indental clinics, there is the necessity to measure halitosis, by request of a patient at the time of treatment. In this study, we examined the influence on the severity of halitosis of tooth and tongue brushing by measuring with a thick film semi conductor (absorption effect transistor) gas sensor, and evaluated the effectiveness of this gas sensor for use at chair-side in dental clinics. At first, the change of halitosis during the day was measured every other hour after getting up in the morning until 5 p.m., without mouth cleaning. After that, the change of halitosis after tooth brushing with water for three minutes was measured. Measurements were started 2 hours after lunch. Five healthy young subjects (average age : 24.5 years old, 3 men and 2 women) and 7 healthy middle-age subjects (average age : 45.7 years old, 7 men) were measured for halitosis every 30 minutes after tooth brushing for two hours, including just before and after tooth brushing. Then, the change of halitosis after tooth and tongue brushing with water was measured. The schedule of measurements was the same as before but with the addition of tongue brushing for one minute. In the results, the highest halitosis value was detected at the time of rising and 2-3 hours after breakfast and lunch. After tooth brushing, halitosis was reduced a little but there was not any major reduction of halitosis. After tooth land tongue brushing, halitosis was reduced immediately. Hlitosis increased gradually every 30 minutes. Halitosis was also low after 120 minutes. In this study, we investigated the effectiveness in maintaining low halitosis of tongue brushing used together with tooth brushing, measured by a thick film semiconductor gas sensor. All results indicated that tongue brushing is effective in maintaining halitosis. This means that the thick film semiconductor gas sensor is a useful and compact piece of equipment for measuring halitosis at chair-side in dental clinics.},
 pages = {2003-10-20--2003-10-20},
 title = {歯および舌ブラシの口臭への影響の検索 : 新しい口臭測定装置の応用},
 volume = {2003-10-20},
 year = {}
}