Comminution of two artificial test foods by dentate and edentulous subjects

Abstract

An experimental artificial test food with low fracture strength (Optocal) was compared with Optosil with respect to the comminution during mastication by complete denture wearers and subjects with natural dentitions. The comminution of both test foods revealed large differences between the denture wearers and the dentate subjects. These differences were larger with Optosil than with Optocal. The differences in comminution between Optocal and Optosil were larger in the denture wearers than in the dentate subjects. The differences in comminution between the denture wearers and the dentate subjects as well as the differences in comminution between Optocal and Optosil within each group were largely established in less than 20 chewing strokes. The results indicate that differences in selection contributed substantially to the differences in comminution. Since Optocal appeared to be much easier to chew than Optosil, it may be preferred to Optosil for measuring masticatory performance in complete denture wearers.

Protocol for production of a chewable material for masticatory function tests (Optocal - Brazilian version)

“…14 Such patients eventually strain their masticatory muscles in an effort to chew it. 13 This test food, which possesses a much higher resistance against fracture than the maximum bite strength capacity of the patients themselves, would impair the reliability of the quantification of masticatory efficiency and performance. For this reason, other dental materials have been added to Optosil  , allowing a decrease in consistency, making it easier to be chewed.…”

“…Consequently, an experimental chewable material (Optocal), having Optosil NF  as a base and mixed with other components was developed and its force-deformation properties were compared with those of Optosil  . 13,19 Optocal appeared to be much weaker, less elastic and less resistant to deformation. It appears to be well suited for measuring masticatory performance in complete denture wearers as well as in dentate subjects.…”

“…In the experience of complete denture wearers, Optocal was much easier to chew than Optosil  and they judged its texture to be comparable with that of natural foods they normally consumed. 13,17 Nowadays, a new, improved version of this chewable material has been used. 11,20 Masticatory efficiency and performance tests are important for the evaluation of prosthetic rehabilitation success and patient satisfaction in respect to their masticatory functions.…”

“…Therefore, masticatory function is reduced in people who have lost post-canine teeth 4,10 and in those who wear removable dentures. 5,[11][12][13] Condensation silicone has been used in masticatory tests with excellent results. 4,[14][15][16][17][18] The silicone samples fulfill all the criteria of a test material.…”

Het krachtenspel van kronen en bruggen in het occlusiesysteem, mede in relatie tot het orofaciale systeem

“…Anatomische reductie van het occlusiesysteem heeft derhalve gevolgen voor het functieniveau, in dit geval de kauwprestatie die is gedefinieerd als de mate waarin een bepaald soort (test)voedsel kan worden verkleind met een bepaald aantal kauwbewegingen (Van der Van der Bilt, 2011). De kauwprestatie met een anatomisch gereduceerd occlusiesysteem is significant kleiner dan de objectieve kauwfunctie met een intact occlusiesysteem (Van der Slagter et al, 1993;FontijnTekamp et al, 2000;Veyrune et al, 2007). Opvallend is echter dat mensen met een (extreem) anatomisch gereduceerd occlusiesysteem subjectief nauwelijks problemen ervaren bij het kauwen (Johansson et al, 2007 …”