Association between posterior teeth occlusion and functional dependence among older adults in nursing homes in Japan

Takeuchi, Kenji; Izumi, Maya; Furuta, Michiko; Takeshita, Toru; Shibata, Yukie; Kageyama, Shinya; Ganaha, Seijun; Yamashita, Yoshihisa

doi:10.1111/ggi.12762

Cited by 12 publications

(19 citation statements)

References 30 publications

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“…Based on the number of remaining natural teeth, each subject was assigned to an edentulous group, a group with one to nine teeth, or a group with ≥10 teeth. Posterior teeth occlusion was assessed using the total number of functional tooth units (total FTUs) . The total FTUs were defined as the number of pairs of opposing posterior natural teeth and artificial teeth in bridges, dentures or dental implants, excluding carious teeth with extensive coronal destruction.…”

Section: Methodsmentioning

confidence: 99%

Posterior teeth occlusion and dysphagia risk in older nursing home residents: a cross‐sectional observational study

Okabe

Takeuchi

Izumi

et al. 2017

J of Oral Rehabilitation

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The total number of natural teeth was related to swallowing function among older adults; however, limited information is available regarding the impact of occluding pairs of teeth on swallowing function. This study aimed to examine the association between posterior teeth occlusion and dysphagia risk in older nursing home residents. This cross-sectional study included 238 residents aged ≥60 years from eight nursing homes in Aso City, Japan. Swallowing function was evaluated using the modified water swallowing test (MWST); the primary outcome was dysphagia risk (MWST score ≤3). Posterior teeth occlusion was assessed using number of functional tooth units (FTUs), determined based on number and location of the remaining natural and artificial teeth on implant-supported, fixed or removable prostheses. Univariate and multivariate logistic regression analyses were performed to examine the association between posterior teeth occlusion and dysphagia risk, adjusted for the covariates of number of natural teeth, demographic characteristics, comorbidities, physical function, body mass index and cognitive function. Of the 238 subjects, 44 (18·5%) were determined to be at risk of dysphagia based on the MWST scores. The odds ratio (OR) of dysphagia risk decreased in subjects with higher total FTUs [OR = 0·92, 95% confidence interval (CI) 0·87-0·98]. After adjusting for covariates, this association remained significant (OR = 0·90, 95% CI 0·84-0·97). Loss of posterior teeth occlusion was independently associated with dysphagia risk in older nursing home residents. Maintaining and restoring posterior teeth occlusion may be an effective measure to prevent dysphagia.

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Section: Methodsmentioning

confidence: 99%

Posterior teeth occlusion and dysphagia risk in older nursing home residents: a cross‐sectional observational study

Okabe

Takeuchi

Izumi

et al. 2017

J of Oral Rehabilitation

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“…To date, we have only found three studies in the literature that have investigated a relationship between FMUs and Barthel index scores (Genkai et al., ; Kwok et al., ; Takeuchi et al., ). Kwok et al.…”

Section: Discussionmentioning

confidence: 99%

“…In a group of 234 persons over 60 years of age, resident in the city of Aso, Japan, Takeuchi et al. (Takeuchi et al., ) demonstrated that the number of posterior FMUs was significantly associated with the degree of independence for ADL (Barthel index ≥ 60).…”

Section: Discussionmentioning

confidence: 99%

“…Paradoxically, after adjusting for confounding factors, it has been suggested that the relationship between the number of remaining teeth and tests to assess physical fitness loses its significance (Takata et al., ), although chewing ability continues to be an independent predictive factor for physical well‐being (Somsak & Kaewplung, ; Takata et al., ). Very few authors have investigated the relationship between mastication and functional capacity in the elderly; only posterior occlusal contacts have been taken into account, and such studies have all been performed in individuals of Asian origin (Genkai et al., ; Kwok, Yu, Hui, Kwan, & Chan, ; Takeuchi et al., ). Nor has there been adequate investigation of whether the close relationship between the use of dental prostheses and quality‐of‐life indices is comparable to the relationship observed when only remaining natural teeth are studied (Somsak & Kaewplung, ).…”

Section: Introductionmentioning

confidence: 99%

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Relationship between dental occlusion and functional dependence in elderly Caucasians

et al. 2018

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Objective: To determine whether a relationship exists between the number of functional masticatory units (FMUs) and the level of functional dependence of elderly. Subjects and Methods:The study group comprised 502 elderly Caucasians living in nursing homes in north-west Spain and Portugal. The number of FMUs was counted on direct visual inspection. The degree of dependence was assessed using the Barthel index. The results were validated in a group of 156 elderly. Statistical analysis of the results was performed using a generalised linear model (GLM), a logistic GLM, a ROC-GLM curve and a confusion matrix. Results:The number of FMUs significantly affected the Barthel index score (explained deviance = 27.5%). The number of FMUs was significantly associated with a lower probability of dependence, both for women (explained deviance = 31%) and for men (explained deviance = 33%). The model based on FMUs showed a good discriminatory capacity for dependence (AUC = 0.84 in women and 0.82 in men). The predictive capacity of the dependence model based on FMUs was very high (sensitivity = 0.9 in women and 0.8 in men). Conclusions:In institutionalised elderly Caucasians, the number of FMUs is significantly associated with the Barthel index score and could be a predictive factor for dependence. K E Y W O R D SBarthel index, dental occlusion, dependence, elderly

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“…All measurements were performed by a single dental hygienist (M.I.). This procedure has been described elsewhere (19,20). As measurement of peak flow rate during induced coughing was challenging with the study participants, an alternative to PCF measurement was needed.…”

Section: Coughing Ability Measurement and Questionnairesmentioning

confidence: 99%

Effects of oral care with tongue cleaning on coughing ability in geriatric care facilities: a randomised controlled trial

Izumi

Takeuchi

Ganaha

et al. 2016

J of Oral Rehabilitation

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Methods for preventing aspiration pneumonia are needed soon in order to reduce mortality from aspiration pneumonia and promote the health of the elderly. The aim of this randomised controlled trial was to examine whether oral care with tongue cleaning improves coughing ability in elderly individuals living in geriatric care facilities. Participants comprised of 114 residents of 11 group homes and private nursing homes in Aso City in Kumamoto Prefecture. Participants were randomly assigned to either (i) a group that underwent routine oral care with tongue cleaning (intervention group; n = 58) or (ii) a group that underwent routine oral care alone (control group; n = 56). Coughing ability was evaluated by measuring peak expiratory flow (PEF) before and after 4 weeks of intervention. Before the intervention, PEF did not differ significantly between the intervention group (1·65 ± 1·11 L s ) and control group (1·59 ± 1·05 L s ; P = 0·658). However, on termination of the intervention, PEF was significantly higher in the intervention group (2·54 ± 1·42 L s ) than in the control group (1·90 ± 1·20 L s ; P = 0·014). After the intervention, PEF had increased significantly in both groups; however, this increase was significantly greater in the intervention group (0·90 ± 0·95 L s ) than in the control group (0·31 ± 0·99 L s ; P < 0·001). Oral care with tongue cleaning led to increased PEF, suggesting improved coughing ability. Oral care incorporating tongue cleaning appears to be important for preventing aspiration pneumonia.

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Association between posterior teeth occlusion and functional dependence among older adults in nursing homes in Japan

Cited by 12 publications

References 30 publications

Posterior teeth occlusion and dysphagia risk in older nursing home residents: a cross‐sectional observational study

Posterior teeth occlusion and dysphagia risk in older nursing home residents: a cross‐sectional observational study

Relationship between dental occlusion and functional dependence in elderly Caucasians

Effects of oral care with tongue cleaning on coughing ability in geriatric care facilities: a randomised controlled trial

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