Risk factors for tooth loss in community-dwelling Japanese aged 40 years and older: the Yamagata (Takahata) study

Ishikawa, Shinya; Konta, Tsuneo; Susa, Shinji; Kitabatake, Kenichiro; Ishizawa, Kenichi; Togashi, Hitoshi; Tsuya, Atsushi; Ueno, Yoshiyuki; Yamashita, Hidetoshi; Kayama, Takamasa; Iino, Mitsuyoshi

doi:10.1007/s00784-018-2604-x

Cited by 18 publications

(25 citation statements)

References 44 publications

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“…[17][18][19] A current smoking habit was significantly associated with having <20 teeth in 7,542 community-dwelling Japanese people aged 40 years and older (adjusted OR = 1.68, 95% CI = 1.41-1.99) in the Yamagata study. 6 Our results are consistent with those of the Yamagata study. Parity was significantly associated with the decreasing rate of current smoking in our study.…”

Section: Discussionsupporting

confidence: 92%

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Parity and Number of Teeth in Japanese Women: Results from the Japan Nurses' Health Study

Taguchi

Nagai

Ideno

et al. 2020

Women's Health Reports

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Background: Parity is thought to be associated with a decreased number of teeth present in women. However, educational level and social status, which are particularly significant risk factors for loss of teeth, have been heterogeneous in previous observations. This cross-sectional survey aimed to clarify the associations of parity with the risk of having <20 teeth in Japanese female nurses participating in the Japan Nurses' Health Study (JNHS). Methods: In the third follow-up questionnaire of the JNHS, 11,299 women aged 27-82 years participated in this study. The number of participants according to age range was 7,225 (63.9%) aged <50 years and 4,074 (36.1%) aged ‡50 years. Information on parity and risk factors for loss of teeth was collected through a baseline questionnaire and then a follow-up questionnaire. Multivariate logistic regression analysis was used to calculate the adjusted odds ratio (OR) and 95% confidence interval (CI) of having <20 teeth according to parity category. Results: Participants ‡50 years who had experienced three or more deliveries had a significantly higher risk of having <20 teeth than those who had not experienced delivery (OR = 1.59, 95% CI = 1.14-2.20), although this finding was not observed in participants <50 years. In addition to parity, age and current smoking may be independent risk factors for having <20 teeth in Japanese nurses. Conclusions: Higher-parity female nurses ‡50 years may be more likely to lose teeth than those who have not experienced delivery.

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Section: Discussionsupporting

confidence: 92%

“…29 However, no such association was found in the study of Ishikawa et al in Japan. 6 The third limitation is the validity of the self-reported number of teeth present. We previously confirmed the association between the actual and self-reported number of teeth present in a different study.…”

Section: Limitationsmentioning

confidence: 99%

Parity and Number of Teeth in Japanese Women: Results from the Japan Nurses' Health Study

Taguchi

Nagai

Ideno

et al. 2020

Women's Health Reports

View full text Add to dashboard Cite

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“…For Uruguayan participants, Laguzzi et al [21] also reported that tooth loss was more common in people with a lower household income. Studies of Brazilians by Chalub et al [22] and of the middle-aged Japanese population by Ishikawa et al [23] and Ando et al [24] also reported that tooth loss was more common in people with lower education levels.…”

Section: Discussionmentioning

confidence: 99%

Factors Related to the Number of Existing Teeth among Korean Adults Aged 55–79 Years

Lee

Kim

et al. 2019

IJERPH

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This study aimed to determine the association between the number of existing teeth (NET) and socioeconomic status (SES), oral health-related behaviours, and metabolic syndrome in Korean adults aged 55–79 years. The study included 3255 adults who underwent oral health examinations and answered questionnaires regarding SES, oral health-related behaviours, and metabolic diseases in the Sixth Korea National Health and Nutrition Examination Survey (2013–2015). The dependent variable was the binary status based on the median NET in each age group. The independent variables were based on SES, oral health-related behaviours, and the presence of metabolic syndrome. The study findings showed that the factors associated with the NET were sex, household income, education level, region of residence, daily toothbrushing frequency, dental visit within 1 year, smoking, and metabolic syndrome. NET was lower in males (adjusted OR: 0.74), in low household income group (adjusted OR: 0.77), in primary school graduates (adjusted OR: 0.53) and in rural residents (adjusted OR: 0.78). The interventions aimed at preserving existing teeth in elderly population should consider their SES, oral health-related behaviours, and metabolic syndrome and overhauling current oral healthcare system and redefining the roles of oral health professionals.

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“…In Japan, most adults ≥30 years of age experience dental caries, and at least 40% of dentate adults aged ≥40 years have periodontal disease [17]. In addition, tooth loss increases starting at approximately 40 years of age [18]. Therefore, nurses should perform oral assessments and dental referrals for not only elderly inpatients but also younger generations to prevent dental diseases and tooth loss.…”

Section: Discussionmentioning

confidence: 99%

Factors associated with nurses’ performance of oral assessments and dental referrals for hospital inpatients

Haresaku¹,

Uchida²,

Aoki³

et al. 2020

BMC Oral Health

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Background: Nurses' oral assessment and dental referral performance for inpatients are important to provide appropriate oral care services in hospitals. The purpose of this study was to investigate the knowledge, attitudes, and performance of oral assessments and dental referrals for their inpatients among nurses and to identify factors associated with that performance to promote oral health care in hospitals. Methods: All nurses (n = 919) who worked at five hospitals in Japan were recruited as responders. A questionnaire regarding their performance of oral assessments and dental referrals was distributed to the subjects in each hospital. The data were collected from August 2018 to September 2018. Results: A total of 757 (82.4%) nurses (82 males and 675 females) responded to the questionnaire. With respect to each of the 8 oral assessment categories, 16.2-41.2% of the nurses performed oral assessments for more than 50% of their inpatients, and 20.3-29.9% had encouraged more than one inpatient to see a dentist within the previous 3 months. Significant differences were found by ward and hospital in their performance of oral assessments for inpatients. Additionally, their oral assessment performance, knowledge of the usage of oral assessment tools, wards, and hospitals were significantly associated with their dental referral performance. Conclusions: The performance of oral assessment and dental referral was not developed sufficiently in the hospitals. Thus, oral health professionals should support oral assessment education for nurses, including usage of assessment tools, to promote dental referral by nurses. These results may contribute to promotion of dental referral performance by nurses and provision of oral health care by oral health professionals for hospital inpatients.

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Risk factors for tooth loss in community-dwelling Japanese aged 40 years and older: the Yamagata (Takahata) study

Abstract: Poor oral health habits and low educational status are the independent risk factors for having less than 20 teeth.

Cited by 18 publications

References 44 publications

Parity and Number of Teeth in Japanese Women: Results from the Japan Nurses' Health Study

Parity and Number of Teeth in Japanese Women: Results from the Japan Nurses' Health Study

Factors Related to the Number of Existing Teeth among Korean Adults Aged 55–79 Years

Factors associated with nurses’ performance of oral assessments and dental referrals for hospital inpatients

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