Publications by authors named "Yasuyuki Iwasa"

Background: Treating oral problems with dentist intervention during hospitalisation may improve patients' food intake status.

Objectives: This study aimed to clarify whether convalescent rehabilitation ward inpatients in a hospital with hospital dentistry (HHD) had a better diet at discharge than those in a hospital without hospital dentistry (HNHD).

Methods: Retrospective observational study including inpatients with dental involvement in a HHD with dentists and dental hygienists and HNHD with dental hygienist and visiting dental service between 1 March and 31 August 2022.

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Article Synopsis
  • - This study examined how eating and swallowing functions relate to health outcomes (like hospitalizations or survival) in elderly people living in long-term care in Japan over one year.
  • - Researchers assessed various factors (like drooling, coughing, and tongue movement) and collected demographic information to distinguish between those who experienced death/hospitalization and those who survived.
  • - The findings revealed significant links between certain eating and swallowing issues and health outcomes, suggesting that caregivers could use simple assessments for early detection and intervention to improve care and prevent serious conditions.
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Article Synopsis
  • This study explored whether older adults in long-term care should change from a normal diet to a dysphagia diet over a year-long period.
  • It utilized various factors like age, sex, BMI, and oral assessments to evaluate dietary needs, finding notable differences in those who switched diets compared to those who didn't.
  • The findings suggest that regular simple assessments can help identify if an older adult needs a different food form to align with their eating and swallowing abilities.
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Objective: To investigate the association between oral health management (OHM) by dental hygienists and the occurrence of pneumonia, and determine the effectiveness of OHM in pneumonia prevention.

Background: In long-term care facilities in Japan, the need for professional OHM is increasing with an increase in the number of severely debilitated residents.

Materials And Methods: A 1-year prospective multicentre cohort study was conducted using data from 504 residents (63 men; mean age: 87.

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Purpose: This study aimed to determine the association between home visits by a dentist and regular oral hygiene management by a dental hygienist (regular dental management: RDM) and weight loss among older adults in long-term care facilities.

Methods: A total of 468 older residents from 26 Japanese long-term care facilities participated in two surveys in 2018 and 2019. Participants were divided into two groups based on their diet during the baseline survey (regular diet, n = 256; dysphagia diet, n = 212).

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Changing the food form for older adults requiring nursing care from a regular to dysphagia diet is thought to impact their nutritional status. We assessed the association between changes in food form and weight loss over 1 year in older adults. Older adults residing in long-term care facilities in Japan ( = 455) who participated in the baseline (2018) and follow-up (2019) surveys were divided into two groups (regular diet, = 284; dysphagia diet, = 171).

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Background: The prevalence of oral diseases in people with dementia has increased, and patients with dementia have worse oral health than people without dementia. However, in the provision of oral care, these patients often exhibit care-resistant behaviours. Empathy is important for health care professionals who provide dental care for people with dementia.

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Background: Although statistical associations between tooth loss and cognitive decline have been reported, there are few previous studies on denture wearing. Additionally, it remains unclear whether nutritional status mediates this association.

Objective: Our purpose was to test for the hypothesis that the association between the number of teeth and denture wearing with cognitive function is mediated by nutritional status in residents of nursing homes.

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This study investigated the impact of the severity and treatment of Parkinson's disease (PD) on the swallowing ability and oral environment of patients. Swallowing dysfunction increases the aspiration risk and may lead to poor oral health among patients with PD. We investigated the influences of PD progression and drug treatment on the swallowing ability and oral environment using simple noninvasive screening measurements.

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Objective: To develop a simple method to estimate masseter muscle mass.

Background: The masseter muscle is important for optimal oral function. A decrease in the masseter muscle mass may affect the oral and physical function of the whole body; therefore, it is an important entity to measure.

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Background: Aspiration of oral debris, containing dense oral bacteria, is a major cause of pneumonia in elderly adults. This study investigated the relationship between tongue microbiota composition and incidence of pneumonia-related deaths, in nursing home residents.

Methods: The subjects were assessed for health conditions, including their tongue microbiota, at baseline.

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Objective: Many studies report a significant relationship between the one-leg standing time with the eyes open and the occlusal relationship. To determine the association between proprioception (the periodontal membrane vs muscle spindle) to the one-leg standing time, the authors compared the one-leg standing time with eyes open between mouth-opened and mouth-closed conditions.

Methods: The study participants were 107 healthy, elderly patients.

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Aim: To investigate the outcome of percutaneous endoscopic gastrostomy (PEG) in elderly patients with swallowing difficulties who required high-level nursing care.

Methods: We extracted the data of 57 patients (24 men and 33 women) who were admitted to our hospital with a diagnosis of pneumonia over a 5-year study period between January 2006 and December 2010. Evaluation included activities of daily living (ADL), nursing care level (NCL) based on assessment of care requirement, pre-existing disease, blood test data, swallowing function before PEG, and outcome.

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Background: The oral care of hospitalized elderly patients is thought to have a preventive effect on aspiration pneumonia, which is one of the main causes of fever. Although the decreased secretion of saliva is frequently observed in elderly people, no study has examined how a dry oral cavity affects aspiration.

Objective: This study was performed to assess the association of dry tongue to pyrexia.

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