Hideo Miyazaki

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OBJECTIVE Fish oil has anti-inflammatory actions that may benefit periodontal health. We investigated the longitudinal relation between dietary ω-3 fatty acids (FAs), docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA) to periodontal disease in community-dwelling elderly. METHODS Fifty-five participants aged 74 y were randomly selected from a(More)
OsCERK1 is a rice receptor-like kinase that mediates the signal of a fungal cell wall component, chitin, by coordinating with a lysin motif (LysM)-containing protein CEBiP. To further elucidate the function of OsCERK1 in the defense response, we disrupted OsCERK1 using an Agrobacterium-mediated gene targeting system based on homologous recombination. In(More)
OBJECTIVE Bone loss is a common feature of periodontitis and osteoporosis. Both diseases may share common etiologic agents which may either affect or modulate the process of both diseases. The purpose of this study was to evaluate the relationship between systemic bone mineral density (BMD) and periodontal disease among older people. MATERIALS AND METHODS(More)
The aim of this study was to identify the risk factors for periodontal disease progression by individual characteristics at baseline among elderly people over a 2-year period. Subjects were selected from 4542 people aged 70 years residing in Niigata who were in good general health and who did not require special care for their daily activities. Gender,(More)
OBJECTIVE To detect the periodontal status of male smokers and betel chewers in a rural community in Sri Lanka and compare it with that of male non-tobacco users of the same community. METHODS A cross-sectional community based study was carried out in a sample of 2277 rural adult males aged 20-60 years, adopting multistage cluster sampling technique. The(More)
OBJECTIVE To ascertain the association between tobacco use and gingival bleeding in a rural community in Sri Lanka. MATERIAL AND METHODS A cross-sectional field-based study was carried out in 2178 rural males aged 20-60 years, employing a multistage cluster sampling technique. The levels of plaque and gingivitis were recorded on four sites of all teeth(More)
BACKGROUND The relationship between physical fitness and dental health status in elderly adults is still unknown. The purpose of the present study is to examine the relationship between physical fitness and occlusal condition of natural teeth in the elderly population. The sample consisted of 591 individuals aged 70 years and 158 aged 80 years selected from(More)
BACKGROUND Volatile sulfur compounds (VSCs) in oral air are the only type of gases correlated with the strength of oral malodor. We developed a compact and simple gas chromatograph (GC) equipped with a newly invented indium oxide semiconductor gas sensor (SCS) for measuring the concentrations of VSCs in mouth air. We have assessed the correlation between(More)
AIM The aim of this study was to assess chewing ability using color-changeable chewing gum and to show the association between chewing ability and geriatric functions, as well as dietary status in the community-dwelling elderly. METHODS The study population consisted of 269 community-dwelling elderly aged ≥ 75 living in Tosa, Japan. Assessment of chewing(More)
OBJECTIVES A strategy for the control of periodontal disease progression is required to prevent tooth loss in older people. However, detailed epidemiological data on periodontal conditions in elderly people is limited. The purpose of the present study is to describe the natural history of periodontal disease and to evaluate the intraoral factors relating to(More)