Schimmel, Martin; Christou, Panagiotis; Miyazaki, Hideo; Halazonetis, Demetrios; Herrmann, François R; Müller, Frauke (2015). A novel colourimetric technique to assess chewing function using two-coloured specimens: Validation and application. Journal of dentistry, 43(8), pp. 955-964. Elsevier Science 10.1016/j.jdent.2015.06.003
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OBJECTIVES
Chewing efficiency may be evaluated using cohesive specimen, especially in elderly or dysphagic patients. The aim of this study was to evaluate three two-coloured chewing gums for a colour-mixing ability test and to validate a new purpose built software (ViewGum©).
METHODS
Dentate participants (dentate-group) and edentulous patients with mandibular two-implant overdentures (IOD-group) were recruited. First, the dentate-group chewed three different types of two-coloured gum (gum1-gum3) for 5, 10, 20, 30 and 50 chewing cycles. Subsequently the number of chewing cycles with the highest intra- and inter-rater agreement was determined visually by applying a scale (SA) and opto-electronically (ViewGum©, Bland-Altman analysis). The ViewGum© software determines semi-automatically the variance of hue (VOH); inadequate mixing presents with larger VOH than complete mixing. Secondly, the dentate-group and the IOD-group were compared.
RESULTS
The dentate-group comprised 20 participants (10 female, 30.3±6.7 years); the IOD-group 15 participants (10 female, 74.6±8.3 years). Intra-rater and inter-rater agreement (SA) was very high at 20 chewing cycles (95.00-98.75%). Gums 1-3 showed different colour-mixing characteristics as a function of chewing cycles, gum1 showed a logarithmic association; gum2 and gum3 demonstrated more linear behaviours. However, the number of chewing cycles could be predicted in all specimens from VOH (all p<0.0001, mixed linear regression models). Both analyses proved discriminative to the dental state.
CONCLUSION
ViewGum© proved to be a reliable and discriminative tool to opto-electronically assess chewing efficiency, given an elastic specimen is chewed for 20 cycles and could be recommended for the evaluation of chewing efficiency in a clinical and research setting.
CLINICAL SIGNIFICANCE
Chewing is a complex function of the oro-facial structures and the central nervous system. The application of the proposed assessments of the chewing function in geriatrics or special care dentistry could help visualising oro-functional or dental comorbidities in dysphagic patients or those suffering from protein-energy malnutrition.
Item Type: |
Journal Article (Original Article) |
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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: |
0300-5712 |
Publisher: |
Elsevier Science |
Language: |
English |
Submitter: |
Eveline Carmen Schuler |
Date Deposited: |
21 Apr 2016 14:08 |
Last Modified: |
05 Dec 2022 14:55 |
Publisher DOI: |
10.1016/j.jdent.2015.06.003 |
PubMed ID: |
26111925 |
Uncontrolled Keywords: |
Mastication, Edentulous mouth, Symptom assessment, Chewing gum |
BORIS DOI: |
10.7892/boris.81283 |
URI: |
https://boris.unibe.ch/id/eprint/81283 |
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