Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test

Abstract Background In Japan, oral hypofunction has been recognized as a disease since 2018. An alternative to occlusal force testing for assessing oral hypofunction is the evaluation of the number of natural teeth. Subjective masticatory function testing, which evaluates the ease or difficulty in c...

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Main Authors: Yoshiki Uchida, Yuji Sato, Noboru Kitagawa, Junichi Furuya, Tokiko Osawa, Akio Isobe, Mayumi Terazawa, Yukiko Hatanaka, Toshiharu Shichita
Format: Article
Language:English
Published: BMC 2022-06-01
Series:BMC Oral Health
Subjects:
Online Access:https://doi.org/10.1186/s12903-022-02252-9
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author Yoshiki Uchida
Yuji Sato
Noboru Kitagawa
Junichi Furuya
Tokiko Osawa
Akio Isobe
Mayumi Terazawa
Yukiko Hatanaka
Toshiharu Shichita
author_facet Yoshiki Uchida
Yuji Sato
Noboru Kitagawa
Junichi Furuya
Tokiko Osawa
Akio Isobe
Mayumi Terazawa
Yukiko Hatanaka
Toshiharu Shichita
author_sort Yoshiki Uchida
collection DOAJ
description Abstract Background In Japan, oral hypofunction has been recognized as a disease since 2018. An alternative to occlusal force testing for assessing oral hypofunction is the evaluation of the number of natural teeth. Subjective masticatory function testing, which evaluates the ease or difficulty in chewing foods, is an effective alternative to occlusal force testing. However, no reference values have been established for this test. We determined the reference values of the subjective masticatory function test and evaluated its potential as a substitute for the number of natural teeth for assessing oral hypofunction. Methods The sample consisted of 184 older adults who visited the Department of Geriatric Dentistry, Showa University Dental Hospital, from July 2018 to January 2020. The subjective masticatory function test (table for evaluation of chewing function in complete denture wearers [Chewing Score 20]) was performed using 20 foods. The occlusal force test and a receiver operating characteristic curve were used to determine the reference values for Chewing Score 20. The sensitivity, specificity, and positive and negative predictive values were calculated and compared with the occlusal force test and the number of natural teeth. Results A significant correlation (r) was found between the occlusal force test and the Chewing Score 20 (r = 0.526, p < 0.001). The reference value for Chewing Score 20 was < 85. Although the Chewing Score 20 was less sensitive than the number of natural teeth, it demonstrated a higher specificity and a positive predictive value. Conclusion Herein, a score of < 85 on the subjective masticatory function test was determined to be the optimal quantitative reference. The subjective masticatory function test may be used as an alternative for assessing oral hypofunction.
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spelling doaj.art-edb1806b70d648f3b75335de473025802022-12-22T00:38:06ZengBMCBMC Oral Health1472-68312022-06-012211610.1186/s12903-022-02252-9Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function testYoshiki Uchida0Yuji Sato1Noboru Kitagawa2Junichi Furuya3Tokiko Osawa4Akio Isobe5Mayumi Terazawa6Yukiko Hatanaka7Toshiharu Shichita8Department of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryDepartment of Geriatric Dentistry, Showa University School of DentistryAbstract Background In Japan, oral hypofunction has been recognized as a disease since 2018. An alternative to occlusal force testing for assessing oral hypofunction is the evaluation of the number of natural teeth. Subjective masticatory function testing, which evaluates the ease or difficulty in chewing foods, is an effective alternative to occlusal force testing. However, no reference values have been established for this test. We determined the reference values of the subjective masticatory function test and evaluated its potential as a substitute for the number of natural teeth for assessing oral hypofunction. Methods The sample consisted of 184 older adults who visited the Department of Geriatric Dentistry, Showa University Dental Hospital, from July 2018 to January 2020. The subjective masticatory function test (table for evaluation of chewing function in complete denture wearers [Chewing Score 20]) was performed using 20 foods. The occlusal force test and a receiver operating characteristic curve were used to determine the reference values for Chewing Score 20. The sensitivity, specificity, and positive and negative predictive values were calculated and compared with the occlusal force test and the number of natural teeth. Results A significant correlation (r) was found between the occlusal force test and the Chewing Score 20 (r = 0.526, p < 0.001). The reference value for Chewing Score 20 was < 85. Although the Chewing Score 20 was less sensitive than the number of natural teeth, it demonstrated a higher specificity and a positive predictive value. Conclusion Herein, a score of < 85 on the subjective masticatory function test was determined to be the optimal quantitative reference. The subjective masticatory function test may be used as an alternative for assessing oral hypofunction.https://doi.org/10.1186/s12903-022-02252-9Oral hypofunctionQuestionnaireOral frailtyOcclusal forceNatural teethMasticatory function
spellingShingle Yoshiki Uchida
Yuji Sato
Noboru Kitagawa
Junichi Furuya
Tokiko Osawa
Akio Isobe
Mayumi Terazawa
Yukiko Hatanaka
Toshiharu Shichita
Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
BMC Oral Health
Oral hypofunction
Questionnaire
Oral frailty
Occlusal force
Natural teeth
Masticatory function
title Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
title_full Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
title_fullStr Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
title_full_unstemmed Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
title_short Comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
title_sort comparison of oral hypofunction tests and determination of reference values for a subjective masticatory function test
topic Oral hypofunction
Questionnaire
Oral frailty
Occlusal force
Natural teeth
Masticatory function
url https://doi.org/10.1186/s12903-022-02252-9
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