Takashi Zaitsu

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AIM The aims of this research were to assess the validity of self-reporting of the number of teeth by comparing the number with that obtained through clinical dental examinations, and to investigate factors affecting the discordance between the two measures. METHODS Self-administered questionnaires and dental examinations were conducted among 1152 dentate(More)
The objective of this study was to analyze the relationships between subjective oral health symptoms and clinical oral health conditions on the perceived oral health of 1799 Japanese middle-aged adults. A self-administered questionnaire together with dental examinations was administered. A structural equation modeling analysis with Bayesian estimation was(More)
BACKGROUND Breath odor is a nuisance problem for many people around the world. Bad breath affects social interactions of people in daily life by causing personal discomfort and emotional stress. There are chemical and mechanical methods for controlling oral malodor. Many studies of various mouth rinse applications and tongue cleaning procedures have been(More)
OBJECTIVE The objective of this study was to investigate clinical oral health status relationships that affect quality of life (using the 12-item General Oral Health Assessment Index (GOHAI)) and self-rated oral health in a community of Japanese residents. METHODS 459 residents of Yokote City, Japan aged 40-55 years had oral health examinations and(More)
BACKGROUND Previous research has shown the oxidizing properties and microbiological efficacies of chlorine dioxide (ClO2). Its clinical efficacies on oral malodor have been evaluated and reported only in short duration trials, moreover, no clinical studies have investigated its microbiological efficacies on periodontal and malodorous bacteria. Thus, the aim(More)
BACKGROUND There is a possibility that genuine halitosis patients' anxiety do not recover after oral malodor treatment due to their social anxiety disorder. The objective of this study was to investigate the influence of social anxiety disorder on the level of anxiety in genuine halitosis patients before and after treatment for oral malodor. METHODS The(More)
AIM The main objective of this study was to investigate the prevalence of taste hyposensitivity and the relationships between sex, oral health status, and eating habits with taste hyposensitivity in Japanese senior high school students. METHODS Oral examinations, sweet and salt whole-mouth taste tests, and a questionnaire about eating habits were(More)
OBJECTIVES The purposes of this study were (i) to estimate the prevalence of oral malodour, (ii) to evaluate the daily variation of oral malodour and (iii) to assess associations of volatile sulphur compound (VSC) concentrations with socio-demographics, health behaviours and oral health status in community-dwelling elderly Thai. METHODS The subjects were(More)
The objective of this study was to determine the prevalence of and factors associated with clinical and perceived oral malodor among dental students. Clinical oral malodor was measured in 163 Malaysian dental students using organoleptic method and Oral ChromaTM and they were asked about their perception of self-oral malodor. Oral examination was performed(More)