title: Reproducibility of a silicone-based test food to masticatory performance evaluation by different sieve methods.
abstract: The aim of this study was to evaluate the reproducibility of the condensation silicone Optosil Comfort® as an artificial test food for masticatory performance evaluation. Twenty dentate subjects with mean age of 23.3±0.7 years were selected. Masticatory performance was evaluated using the simple (MPI), the double (IME) and the multiple sieve methods. Trials were carried out five times by three examiners: three times by the first, and once by the second and third examiners. Friedman's test was used to find the differences among time trials. Reproducibility was determined by the intra-class correlation (ICC) test (α=0.05). No differences among time trials were found, except for MPI-4 mm (p=0.022) from the first examiner results. The intra-examiner reproducibility (ICC) of almost all data was high (ICC≥0.92, p<0.001), being moderate only for MPI-0.50 mm (ICC=0.89, p<0.001). The inter-examiner reproducibility was high (ICC>0.93, p<0.001) for all results. For the multiple sieve method, the average mean of absolute difference from repeated measurements were lower than 1 mm. This trend was observed only from MPI-0.50 to MPI-1.4 for the single sieve method, and from IME-0.71/0.50 to IME-1.40/1.00 for the double sieve method. The results suggest that regardless of the method used, the reproducibility of Optosil Comfort® is high.
authors.affiliation: Department of Dentistry, Dental School, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Sánchez-Ayala
authors.affiliation: Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil.
authors.forename: Larissa Soares Reis
authors.initials: LS
authors.lastname: Vilanova
authors.affiliation: Department of Prosthodontics, Dental School, Universidade Potiguar, Natal, RN, Brazil.
authors.forename: Marina Abrantes
authors.initials: MA
authors.lastname: Costa
authors.affiliation: Department of Prosthodontics, Dental School, Universidade Potiguar, Natal, RN, Brazil.
authors.forename: Arcelino
authors.initials: A
authors.lastname: Farias-Neto
mesh_terms: D001732:Bite Force; D005260:Female; D005502:Food; D006801:Humans; D008297:Male; D008409:Mastication / Q000502:physiology*; D008422:Materials Testing / Q000379:methods*; D015588:Observer Variation; D010316:Particle Size; D012016:Reference Values; D015203:Reproducibility of Results; D012828:Silicones / Q000737:chemistry*; D018709:Statistics, Nonparametric; D013997:Time Factors; D055815:Young Adult
chemical_list: D012828:Silicones