Clinical evaluation of a chemically cured hard denture relining material

Abstract

The purpose of the current study was to evaluate the clinical performance of a chemically cured denture relining material after 1-year service period. A powder-liquid material designed for denture base relining (Tokuso Rebase Normal-set, Tokuyama Corp., Tokyo, Japan.) was assessed. Fifty adult patients, who required denture reline treatment, participated in the current project. Adaptation of each denture was examined with a silicone elastomeric material, and the surface to be relined was reduced by means of a rotary cutting instrument, then conditioned with dichloromethane. The relining material was spatulated, poured into the relining area, inserted and adjusted after setting. Each relined denture was subjected to base line evaluation immediately after relining and end evaluation after 1 year. Standardized criteria were used for direct evaluation of the material. After an observation period of 1 year, the rate of the relining cases considered to be in clinically ideal condition (Alfa) was 90% for staining, 90% for discoloration, 94% for peeling, 96% for adaptation and 100% for irritation to oral tissue. Only one case was judged as clinically unacceptable (Charlie), and this was for staining. On the basis of a 1-year observation, the Tokuso Rebase material is considered to be a clinically reliable hard denture relining agent.

Effects of various denture cleansers on surface roughness of hard permanent reline resins

“…Direct relining with hard permanent reline resins offers an opportunity for correcting an adaptation problem at the clinic in a relatively short time when compared to laboratory relining 20,21) . .…”

Influence of methylmercaptan on the bonding strength of autopolymerizing reline resins to a heat-polymerized denture base resin

“…This is because after prolonged use, dentures might develop microcracks because of repeated and forceful flexion, and these cracks may facilitate microorganism invasion or staining 2,4,5) . Some studies examined the bond strength between reline resins and denture base resins, wide-ranging attempts have been made to increase the strength by using mechanical surface treatments such as roughening, and chemical surface treatments with methyl methacrylate (MMA) monomers or certain organic solvents of the denture base resin [6][7][8][9][10][11][12][13] . Other studies examined the influences of immersing denture base resins in water, olive oil, or milk on the bond strength between denture base resins and reline resins [14][15][16][17][18] .…”

Development and application of methods for determination of residual monomer in dental acrylic resins using high performance liquid chromatography

“…The use of the autopolymerizing reline acrylic resins permits direct intra-oral relining of complete and removable partial dentures, thus producing an accurate adaptation of the denture bases to the mucosa covering the residual ridges (Matsumura et al, 2001;Haywood et al, 2003). These hard chair-side reline resins have been used to improve the fit of denture bases, thereby providing better retention and stability for removable prostheses.…”