A multifactorial model of masticatory performance: the Suita study

Kosaka, Takayuki; Ono, Takahiro; Kida, Momoyo; Kikui, Miki; Yamamoto, Masaaki; Yasui, Shinro; Nakamura, Takashi; Maeda, Yoshinobu; Kokubo, Yoshihiro; Watanabe, Makoto; Miyamoto, Yoshihiro

doi:10.1111/joor.12371

Cited by 123 publications

(167 citation statements)

References 20 publications

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“…Tooth loss leads to a deterioration in chewing efficiency 23,24 , which often introduces an unnoticed change in diet, as the food choice is limited to what is feasible to chew with a reduced occlusal surface and/or removable prostheses 25 . Often, the poor chewing capacity related to tooth loss is aggravated by ill-fitting dentures, infection, and pain, potentially leading to protein energy malnutrition, especially among older patients 26,27 .…”

Section: The Benefits Of Retaining Natural Teeth Dietmentioning

confidence: 99%

Oral health for an ageing population: the importance of a natural dentition in older adults

Müller

Shimazaki

Kahabuka

et al. 2017

International Dental Journal

119

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Despite progress in dentistry, tooth loss in old age is still a reality, even more so in long-term-care residents. However, recent trends indicate that natural teeth are lost later in life. Functional decline and age-related pathologies have to be considered in oral health care for this vulnerable population. Retaining and restoring teeth and oral function in elders is important. Tooth loss significantly impairs masticatory performance, which cannot be fully restored by prosthodontic means. Hence an unconscious change in food intake occurs, often involving malnutrition and withdrawal from common meals. Poor oral appearance and bad breath may further impede social activities. Although a chewing activity may be beneficial for cognitive function, natural teeth can present a considerable risk for fragile elders, in whom aspiration of biofilm can lead to pneumonia and death. The presence of natural teeth is also correlated with higher life expectancy, but socio-economic confounding factors have to be considered. When evaluating oral health in the elderly population, standards and priorities for reporting oral health outcome measures have to be defined. Anatomical indicators such as the number of natural teeth or the presence of prostheses might be one option for reporting. However, functional indicators such as masticatory performance and patient-centred outcome measures may be more relevant. In conclusion, there is an overwhelming body of evidence that maintaining a healthy natural dentition in old age is beneficial from a structural, functional and psycho-social point of view.

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Section: The Benefits Of Retaining Natural Teeth Dietmentioning

confidence: 99%

Oral health for an ageing population: the importance of a natural dentition in older adults

Müller

Shimazaki

Kahabuka

et al. 2017

International Dental Journal

119

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“…Male participants in the lower maximum bite force group showed increased risk of all-cause mortality compared with those in the upper maximum bite force group. The range of MOF is gender-sensitive and affected by the presence or absence of teeth [15–17]. Furthermore, as the average life span increases, further studies on very elderly people aged 85 years or older are required.…”

Section: Introductionmentioning

confidence: 99%

Association between maximum occlusal force and 3-year all-cause mortality in community-dwelling elderly people

et al. 2016

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BackgroundAmong the very elderly, poor oral health reduces life expectancy. In this study, differences in the magnitude of the maximum occlusal force (MOF) in the very elderly were examined in terms of effects on all-cause mortality in a 3-year follow-up.MethodsWe evaluated 489 community-living elderly individuals aged 85 years or older. MOF was measured using an occlusal force measuring device, and participants were classified into three groups according to gender- and dental status-sensitive tertiles. Demographic variables, cognitive, physical function, psychological status, oral health, comorbidity, and blood chemistry factors were assessed. One-way analyses of variance, χ2 tests, and the Kruskal-Wallis test were used for statistical analyses. The relationship between MOF tertiles and 3-year all-cause mortality was examined using a multivariate Cox model analysis after adjusting for confounding factors.ResultsMOF tertiles were significantly associated with cognitive impairment, number of teeth, limitations on chewable foods, handgrip strength, timed up-and-go test, and diabetes mellitus. During the follow-up period, 74 subjects died. Subjects with the highest MOF had a significantly lower mortality rate than other groups (log rank P = 0.031). In the univariate Cox model, MOF tertiles were independently associated with a lower risk of death (HR = 0.69, 95 % CI = 0.51–0.91). Even after adjusting for various confounders in the multivariate Cox model (Model 1), MOF was independently associated with a lower risk of death (HR = 0.67, 95 % CI = 0.50–0.91). In model 2, we added handgrip strength as a confounder and found that the HR for MOF was attenuated (HR = 0.73, 95 % CI = 0.54–0.99), but still statistically significant.ConclusionsIn a cohort of the very elderly, MOF was independently associated with all-cause mortality after adjusting for various health issues. Moreover, this independent association remained after a further adjustment for handgrip strength; however, the HR was attenuated. This suggests that MOF and handgrip strength may share a common mechanism of a general decrease in muscle strength, possibly sarcopenia, which is a significant cause of mortality in the very old.

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“…Mastication, which aims to break food into discrete portions by chewing to make it easier to swallow, is the first step of the digestive process . In this process, smaller food particles swallowed lead to greater absorption of nutrients, which are essential for health maintenance, especially in elderly patients .…”

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confidence: 99%

The Influence of Age, Gender, Mandibular Bone Height, Previous Experience with Prostheses, and Fabrication Methods on Masticatory Performance of Complete Denture Wearers

Alves

Munhoz

Nascimento

et al. 2018

Journal of Prosthodontics

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A multifactorial model of masticatory performance: the Suita study

Cited by 123 publications

References 20 publications

Oral health for an ageing population: the importance of a natural dentition in older adults

Oral health for an ageing population: the importance of a natural dentition in older adults

Association between maximum occlusal force and 3-year all-cause mortality in community-dwelling elderly people

The Influence of Age, Gender, Mandibular Bone Height, Previous Experience with Prostheses, and Fabrication Methods on Masticatory Performance of Complete Denture Wearers

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