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A field survey of the partially edentate elderly: Investigation of factors related to the usage rate of removable partial dentures
Author(s) -
Murai S.,
Matsuda K.,
Ikebe K.,
Enoki K.,
Hatta K.,
Fujiwara K.,
Maeda Y.
Publication year - 2015
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/joor.12318
Subject(s) - dentures , removable partial denture , medicine , logistic regression , dentistry , orthodontics
Summary Although the shortened dental arch ( SDA ) concept has been known to all over the world, acceptance of the SDA concept as an oral health standard can be questionable from the patients' point of view, even if it is biologically reasonable. Furthermore, because the health insurance system covers removable partial dentures ( RPD s) for all citizens in Japan, SDA patients seem to prefer to receive prosthetic treatment to replace the missing teeth. However, there were few field surveys to investigate the usage rate of RPD s in Japan. The purpose of this study was to determine the usage rate of RPD s in older Japanese subjects and to investigate the factors related to the usage of RPD s. Partially edentate participants ( n = 390) were included in this study. Oral examinations were conducted to record several indices. The Cochran–Armitage trend test was used to evaluate the relationship between the number of missing teeth and the usage rate of RPD s. Chi‐squared tests and logistic regression analysis were conducted to evaluate the factors related to the usage rate of RPD s. Usage of RPD s had a significantly positive association with the number of missing distal extension teeth and bilaterally missing teeth. The usage rate of RPD s increased as the number of missing distal extension teeth increased ( P for trend < 0·001). The conclusion of this study was that participants with missing distal extension teeth had higher usage rates of RPD s than other participants, and the usage rate increased as the number of missing distal extension teeth increased.