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Swallowing threshold parameters of.subjects with complete dentures and overdentures

Open Journal of.Stomatology 2011年第3期1卷 69-74页

作者： Dick. J. Witter f. anneke tekamp Ad P. Slagter Cees M. Kreulen Nico H. J. Creugers 不详

Aim: To compare the chewing process and swallowing threshold parameters of.subjects with complete dentures and overdentures with data obtained f.om subjects with complete natural dentitions. Metho-dology: The chewing process in terms of.swallowing threshold parameters of.f.ur groups of.subjects with complete dentures (all f.males) was quantif.ed by sieving particles af.er chewing of.an artif.cial test ‘f.od’ and compared with that of.subjects with com-plete natural dentitions as a ref.rence group (33 sub-jects). All subjects (except those of.the ref.rence group) had a complete denture in the upper jaw. Regarding the lower jaw two groups with complete dentures (with high (24 subjects), respectively low mandible (12 subjects)) and two groups with overdentures (implant-retained (22 subjects), respectively natural root supported (19 subjects)) were composed. Results: The ‘overdenture-implants’ group needed signif.cantly more chewing cycles and time (mean: 45 cycles in 32 seconds) until ‘swallowing’ compared to the group with complete natural dentitions (mean: 26 cycles in 19 seconds until ‘swallowing’). Also the ‘complete denture-low mandible’ group needed sig-nif.cantly more cycles and time (mean: 52 cycles in 44 seconds) until ‘swallowing’ than the complete dentition group. In the ‘overdenture-natural roots’ group these outcomes (33 cycles in 24 seconds) were not signif.cantly dif.erent compared with the complete dentition group. The ‘complete denture-high mandi-ble’ group (32 cycles in 26 seconds) needed not sig-nif.cantly more cycles until ‘swallowing’, however time until ‘swallowing’ was signif.cantly longer com-pared to the complete dentition group. All denture groups had signif.cantly larger mean particle sizes when ‘swallowing’ (sizes in the order of.3 mm) than the natural dentition group (about 2 mm). Conclusion: Despite ef.orts to compensate f.r a reduced chewing ef.iciency, subjects with complete dentures (including overdentures) had 50% larger median particl

关键词： Swallowing Threshold Chewing Ef.iciency Complete Denture Overdenture Oral Implant

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