Several attempts to fabricate a denture base
material to prevent the adhesion of Candida have been made.
[18.] Fletcher, A.M., Purnaveja, S., Amin, W.M., Ritchie, G.M., Moradians, S., Dodd, A.W.,(1983): The Level Of Residual Monomer In Self Curing Denture Base
Materials, J Dent, 62:118-120
Yeasts of the genus Candida are commonly present in plaque on denture bases
but various other pathogens have been found to grow in denture plaque.
Two commercial brands of autopolymerized denture base
polymers, super-cure deep pink-veined (Universal Dental, Meadway, England) and super-cure shade clear (Universal Dental, Meadway, England) were selected.
As seen from table 1 and graph 1, group the control (n=10) consisting of denture base
acrylic specimens immersed in distilled water (10x10x2 mm), The mean colony count of candida on denture base
acrylic specimens after immersion in Group A (hydrogen peroxide denture cleansers) ranged from a maximum of 70.50 before immersion, to a minimum of 50 after immersion into denture cleanser,.
In addition, the adhesive strength of denture teeth to the lightcuring denture base
is less than that of heat-curing denture base
However, one of the severe problems with resilient denture liners is bond failure between liner and denture base
leading to microleakage, which in turn may promote bacterial growth, plaque, and calculus formation.
 Watri (2010) examined the addition of chopped strand glass fiber with 1%, 1.5%, and 2% concentration in heat-polymerized acrylic resins (QC 20), reported that there was an increased in impact strength and transverse strength with the addition of 1% glass fiber while the addition of 2% glass fiber can reduce the transverse strength of heat-polymerized denture base
At the fifth visit, the upper denture base
was inserted and the use of marbles was discontinued.
Recently, some new types of polymers have been proposed as denture base
materials with the purpose of achieving favourable aesthetic outcome, biocompatibility especially for patients who are allergic to conventional metals and resin monomers, higher elasticity than conventional heatpolymerizing resins, sufficient strength for use as a denture base
Lesions of the oral mucosa associated with the wearing of dentures may represent acute or chronic reactions to microbial denture plaque, a reaction to constituents of the denture base
material, or a mechanical denture injury.
Since most complete dentures nowadays are made with acrylic resin teeth with poly methylmetha acrylate (PMMA) resin for the denture base
, it is always better to follow a cleaning method in which strong abrasive action is not present [2,5].
Complete dentures fabricated using acrylic resin have a high incidence of fracture; the reinforcement of the denture base
resin might improve the mechanical properties of the resin and consequently longevity of prosthesis.
The maxilla-mandibular relationship (MMR) was recorded with bite registration material (Regisil 2X, Dentsply USA), with the mandibular denture base
sitting on the 5 mm healing abutments during this visit.