Date of Award

Summer 1967

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Dentistry

First Advisor

Gehl, Daniel H.

Second Advisor

Young, Helen C.

Third Advisor

Fairhurst, Carl W.

Abstract

Resilient materials to line complete dentures have been used in dentistry since the latter part of the nineteenth century. It appears that the resilient liners and tissue conditioners are becoming more widespread in use by the dental profession. A long and rapidly expanding list of commercial products are available, and the dental literature evidences an increasing number of recently published articles. When the oral mucosa supporting dentures is displaced beyond the normal physiological limits, the tissues become traumatized, inflammed [sic], and less resilient. When dentures causing these conditions are removed, the tissues improve in shape, tone and color. The concept of conditioning these tissues by the use of a soft, flowing acrylic resin material, placed inside the properly prepared old denture, thus conditioning the mucosa by the intermittent application of masticatory force, has been shown to produce excellent clinical results. The purpose of this study is to evaluate the clinical findings of tissue conditioning procedures and to see if the clinical improvement is substantiated using quantitative histological and topographical evidence in both the maxillary and mandibular arches. The tissue conditioning material employed in this study was Hydro-Cast. Eight patients wearing complete maxillary and mandibular dentures evidencing acute denture-bearing mucosal deformation and inflammation were treated. The Ryge-Fairhurst Contour Meter was used to evaluate topographical data. Biopsy specimens were taken in the maxillary and mandibular cuspid ridge crest areas and three variant histologic stains were employed to intimately evaluate the histological data.

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