Reliability of a two-colour chewing gum test to assess masticatory performance in complete denture wearers.

Silva, L C; Nogueira, T E; Rios, L F; Schimmel, Martin; Leles, C R (2018). Reliability of a two-colour chewing gum test to assess masticatory performance in complete denture wearers. Journal of oral rehabilitation, 45(4), pp. 301-307. Blackwell Scientific Publications 10.1111/joor.12609

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The aim of this study was to test the reliability of a method to measure the masticatory performance of complete denture wearers employing a colour-mixing ability test and assessment by visual and electronic colourimetric analysis. A sample of 75 subjects was selected from patients who received new conventional complete dentures. Masticatory tests were performed using a two-colour chewing gum that was masticated for 5, 10, 20, 30 and 50 chewing cycles, performed in a random order. The mixing level of the two colours of the chewed gum was assessed visually by two independent raters based on a 5-point ordinal scale. The specimens were flattened into a 1-mm-width wafer, scanned and saved as a two-sided digital image. Each pair of images was submitted to an electronic colourimetric analysis to assess the level of colour mixture, measured by the circular variance of hue (VOH). Overall inter- and intra-rater agreements in visual analysis were 64% and 68%, respectively (almost 99% of scores ranged within ±1 point), whilst overall weighted kappa was >0.80. A proportional increase in the level of mixture occurred with increased number of chewing cycles (P < .001). Similarly, VOH and the visual analysis were highly correlated (r = -.89; P < .001). Bland-Altman plots revealed excellent agreement and extremely low systematic error between duplicated VOH measures. It was concluded that the two-colour chewing gum test is a reliable method to assess the masticatory performance in complete denture wearers using both visual and electronic colourimetric analyses.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology

UniBE Contributor:

Schimmel, Martin

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0305-182X

Publisher:

Blackwell Scientific Publications

Language:

English

Submitter:

Vanda Kummer

Date Deposited:

11 Mar 2019 10:43

Last Modified:

05 Dec 2022 15:24

Publisher DOI:

10.1111/joor.12609

PubMed ID:

29356092

Uncontrolled Keywords:

clinical research complete denture edentulous patients electronic analysis masticatory performance reliability

BORIS DOI:

10.7892/boris.123994

URI:

https://boris.unibe.ch/id/eprint/123994

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