Dentures are mainly made from acrylic due to the ease of material manipulation and likeness to intra-oral tissues, ie. gums. Most dentures made are fabricated from heat-cured acrylic polymethyl methacrylate and rubber-reinforced polymethyl methacrylate.[3] Coloring agents and synthetic fibers are added to obtain the tissue-like shade, and to mimic the small capillaries of the oral mucosa, respectively.[4] However, dentures made from acrylic can be fragile and fracture easily if the patient has trouble adapting neuromuscular control. This can be overcome by reinforcing the denture base with cobalt chromium (Co-Cr). They are often thinner (therefore more comfortable) and stronger (to prevent repeating fractures).
Removable partial dentures usually consist of replacement teeth attached to pink or gum-colored plastic bases. Depending on your needs, your dentist will design a partial denture for you. A partial denture may have a metal framework and clasps that connect to your teeth, or they can have other connectors that are more natural looking. In some cases, a removable partial denture is made to attach to your natural teeth with devices called precision attachments. Precision attachments are generally more esthetic than clasps.Â
Sulphamic acid is a type of acid cleanser that is used to prevent the formation of calculus on dentures. Suphlamic acid has a very good compatibility with many denture materials, including the metals used in denture construction.[32] 5% hydrochloric acid is another type of acid cleanser. In this case, the denture is immersed in the hydrochloric cleanser to soften the calculus so that it can be brushed away. The acid can cause damage to clothes if accidentally spilt and could cause corrosion of cobalt-chromium or stainless steel if immersed in the acid often and over long periods of time.[32]
A film of saliva typically helps hold dentures in place. Denture adhesives may be used if the salivary glands do not produce a sufficient amount of saliva. Denture adhesives are not, however, a remedy for ill-fitting dentures. A denture that fits poorly (i.e., feels loose or causes discomfort) may need to be relined or replaced as it can contribute to the development of mouth sores.
