Risk Factors for Caries of Permanent Teeth in Japanese Infants : A Cohort Study

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  • KOMATSUZAKI Akira
    Department of Preventive and Community Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata
  • KOMATSU Yoshinori
    Komatsu Dental Clinic
  • ONO Sachie
    Department of Preventive and Community Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata
  • TANAKA Satoshi
    Department of Pediatric Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata

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  • 永久歯う蝕に関する幼児期う蝕リスク要因の検討

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 The objective of this study was to analyze various factors related to dental caries in Japanese infants. Subjects study comprised infants living in a rural area of the northern part of Honshu Island (n=162). They received dental check-ups provided by the local government when they were 18 months, 2 years, and 3 years old. <br> In the follow-up studies, intraoral examinations, interviews, and mutans scores were recorded using the Dentocult-SMTM at dental check-ups, performed to identify factors affecting the number of decayed, missing, and filled permanent teeth (DMFT) at the age of 11 years. <br> Contingency table and logistic regression analyses revealed that DMFT scores at 11 years of age were closely associated with the caries incidence in 2 and 3 year olds, brushing teeth by a carer, eating snacks, having a mentor during the daytime, and Dentocult-SMTM scores. <br> Risk factors for developing dental caries were suggested, and their screening in infants is essential to prevent permanent tooth caries.

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