Ann Rehabil Med.  2013 Apr;37(2):247-253. 10.5535/arm.2013.37.2.247.

The Effects of Removable Denture on Swallowing

• Son DS
• Seong JW
• Kim Y
• Chee Y
• Hwang CH

• KMID: 2165778
• DOI: http://doi.org/10.5535/arm.2013.37.2.247

Abstract

OBJECTIVE
To investigate the relationship between removable dentures and swallowing and describe risks.
METHODS
Twenty-four patients with removable dentures who were referred for videofluoroscopic swallowing study (VFSS) were enrolled. We evaluated the change of swallowing function using VFSS before and after the removal of the removable denture. The masticatory performance by Kazunori's method, sensation of oral cavity by Christian's method, underlying disease, and National Institutes of Health Stroke Scale for level of consciousness were collected. Functional dysphagia scales, including the oral transit time (OTT), pharyngeal transit time (PTT), percentage of oral residue, percentage of pharyngeal residue, oropharyngeal swallow efficiency (OPSE), and presence of aspiration were measured.
RESULTS
Four patients dropped out and 20 patients were analyzed (stroke, 13 patients; pneumonia, 3 patients; and others, 4 patients). The mean age was 73.3+/-11.4 years. There were significant differences before and after the removal of the denture for the OTT. OTT was significantly less after the removal of the denture (8.87 vs. 4.38 seconds, p=0.01). OPSE increased remarkably after the removal of the denture, but without significance (18.24%/sec vs. 25.26%/sec, p=0.05). The OTT and OPSE, while donning a removable denture, were correlated with the masticatory performance (OTT, p=0.04; OPSE, p=0.003) and sensation of oral cavity (OTT, p=0.006; OPSE, p=0.007).
CONCLUSION
A removable denture may have negative effects on swallowing, especially OTT and OPSE. These affects may be caused by impaired sensation of the oral cavity or masticatory performance induced by the removable denture.

Keyword

Dysphagia; Removable partial denture; Swallowing

MeSH Terms

Consciousness
Deglutition
Deglutition Disorders
Denture, Partial, Removable
Dentures
Humans
Hypesthesia
Mouth
National Institutes of Health (U.S.)
Pneumonia
Sensation
Stroke
Weights and Measures

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