Compatibility of two types of gummy jelly tests for detecting decreased masticatory function

Kazuhiro Murakami, Kazuhiro Hori, Hiroyuki Yoneda, Naoko Sato, Ketsupha Suwanarpa, Ma Therese Sta. Maria, Pinta Marito, Takashi Nokubi, Takahiro Ono

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Objective: This study aimed to verify the compatibility of masticatory performance tests using different two types of gummy jellies. Background data discussing the present status of the field: Compatibility between the glucose concentration measuring method (GC) and 10-steps visual scoring method (VS), which are masticatory performance tests for diagnosing decreased masticatory function (DMF) in oral hypofunction and the use of different types of gummy jelly, has yet to be confirmed. Materials and methods: The participants consisted of 134 Japanese older people (51 men and 83 women). GC, VS and the increased surface area measuring method (ISA), as an alternative analysis method for VS, were conducted to evaluate masticatory performance. Cohen's Kappa coefficient was used to verify the consistency for detecting DMF between GC and VS. Pearson's correlation coefficient was used to analyse the relationship between GC and ISA. Each masticatory performance was compared among three different groups for the number of residual teeth. Cut-off values of VS and ISA for DMF that were consistent with GC were identified. Results: Glucose concentration measuring method and VS showed an excellent consistency (Kappa coefficient = 0.86). There was a high positive correlation between GC and ISA (r =.70). However, the change in masticatory performance according to the number of teeth was different between GC and VS/ISA. The cut-off values of VS and ISA were a Score of 2 and 1687 mm2, respectively. Conclusion: Glucose concentration measuring method and VS/ISA remained fairly consistent for detecting DMF, which might be useful information to interconnect the various studies on masticatory performance.

Original languageEnglish
Pages (from-to)10-16
Number of pages7
Issue number1
Publication statusPublished - Mar 2022


  • gummy jelly
  • mastication
  • masticatory performance
  • oral hypofunction


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