Reliability of a new test food to assess masticatory function

Publication date: Available online 9 December 2017
Source:Archives of Oral Biology
Author(s): Laura Khoury-Ribas, Raul Ayuso-Montero, Bernat Rovira-Lastra, Maria Peraire, Jordi Martinez-Gomis.
ObjectiveThis study assessed the reliability and validity of masticatory function assessment using a new test food, Optozeta.DesignThirty-five adults participated in the cross-sectional clinical part of the study; ten of them performed a retest. They performed two free-style masticatory tests consisting of five trials of 20 cycles each chewing three pieces of Optosil or Optozeta placed in a latex bag. Optozeta was created by mixing 50% Optosil with 50% of Zetalabor. Masticatory performance, masticatory laterality and chewing rate were assessed. Reliability and construct validity were assessed using the intraclass correlation coefficient (ICC) and Spearman correlations, respectively.ResultsHigher ICC values were observed for each aspect of masticatory function as assessed using Optozeta compared with Optosil. All the participants showed a lower median particle size value using Optozeta than Optosil. For each masticatory parameter, a high correlation was observed between using Optosil or Optozeta.ConclusionsOptozeta seems to have good construct validity and appears to be more reliable than Optosil as a test food to assess masticatory function.



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