Acrylic dentures: full dentures made of acrylic
Acrylic dentures is widespread among patients of different age, as it is the easiest and most affordable way to replace lost chewing function and aesthetic smile. Modern dentistry has a huge amount of materials for making dentures, but dentures made of acrylic plastic, light, comfortable, cause the patient a minimum of discomfort and perfectly perform their functions.
The types of prosthetic acrylic
Depending on the degree of preservation of the dentition of the acrylic dentures are divided into:
- Full removable: fixed jaw due to the creation of the sparse space between the baseline and the mucous membranes;
- Removable partial: have different locking device:
— Glamurnoe (locking metal hooks positioned around the preserved natural teeth);
— Castle (via attachments to two elements, one of which is located on the abutment tooth, the other on the basis);
And beam (metal beam connecting the crowns of the abutment teeth; this mount is better suited to patients with periodontitis).
The correct choice of the structure allows to solve the problem of lack of not only a few teeth, but is an excellent treatment option for edentulous – complete loss of teeth on the upper or lower jaw. Acrylic denture completely replaced the orthopedic construction of rubber, through which have improved color matching basis in strict accordance with the natural color of the mucous membrane of the gums. To decide which designs are best suited to each case can only be a specialist after inspection of the mouth and assessment of the state of the preserved teeth.
Indications and contraindications for prosthetics
Acrylic dentures are used both in adult and in pediatric dentistry. In younger patients they can be made as a temporary measure for the period of healing of the hole after removal of the tooth. Children acrylic dentures indicated for early and non-uniform loss of milk teeth for the prevention of deformation of dentition. But the more common plastic detachable design received among elderly patients, as they are low cost, have good aesthetic properties and is easy to care for.
In some cases, made full removable prosthesis? It is shown in the absence of teeth, and in that case, if the remaining teeth do not meet all the requirements to the abutment teeth. Before fabrication of the denture teeth are removed. Support in this case is the gum on the lower jaw and the upper additional point of retention is the hard palate.
Removable partial design is made in the case if there are endpoints or included defects such as missing teeth, previously located nearby. The indication for partial removable prosthetics also serves as the impossibility of implantation and lack of proper facilities to fixed constructions. Support removable partial structures serve as the gingival mucosa and restraint mechanisms – clamp or attachmen.
Treatment of plastic prostheses is contraindicated in the following cases:
- If the patient has allergies to acrylates constituting the denture base (it is recommended to consider the option of treating nylon with removable structures);
- A high degree of bone resorption of the alveolar bone (unfavorable conditions for fixation).
- Pronounced gag reflex in the patient.
The stages of construction
Modern dental equipment allows to reduce terms of manufacturing of orthopedic structures – the average acrylic denture done in 10– 15 days. Before installation of the prosthesis, the patient undergoes a preparatory phase, during which treated all the existing cavities and inflammatory diseases of the mucous membrane, determine which teeth will go under the strut, and remove teeth and roots that cannot be treated.
Clinical and laboratory stages of manufacturing:
- Clinical: preparation of preserved teeth, going to the reference (partial prosthesis), lifting of prints from the upper and lower jaw.
- Laboratory: in the laboratory a dental technician according to the obtained casts molds plaster models of the jaws, which made occlusal rims in wax.
- Clinical: fitting bite block of cylinders to determine height of the bite and the value of physiological rest.
- Laboratory: modeling of the basis of the wax with subsequent production of artificial teeth on it.
- Clinical: fitting the design to identify inaccuracies.
- Laboratory: manufacturer basis – replacement of wax for plastic, grinding and polishing of the finished prosthesis.
- Clinical: the fitting design is necessary in order to find out which sites bring the patient noticeable discomfort to eliminate them
The advantages and disadvantages of acrylic dentures
Before you make a choice of which prosthesis is better suited to the patient, the doctor should tell you about all the advantages and disadvantages of plastic orthopedic treatment of edentulous structures.
Acrylic dentures have many advantages over other removable appliances:
- Low price acrylic dentures are the most affordable;
- Full restoration of chewing function;
- High aesthetic quality;
- Reliability and ease of operation, no need complex care;
- Uniform distribution of masticatory load (partial removable dentures, the load falls on the abutment teeth, which is better for the gums);
- Simple production technology, due to which the design is done in a short time.
Like any other designs, denture acrylic has its drawbacks:
- Due to the large area of contact of the basis of the mucosa increases the possibility of injury to the soft tissues;
- Partial dentures with klammern mount can damage the enamel of the abutment teeth that can lead to development of carious process;
- Acrylic, made of design, could provoke an allergic reaction;
- Basis rather fragile, so it is easy to break when excessive strain or accidental drop;
- A difficult period of adaptation to the structure;
- Full acrylic denture is fixed loosely to the jaw without special fixing means;
- Bazis has a porous structure, thereby increasing the possibility of accumulation of pathogenic bacteria, so in the absence of adequate hygiene include the risk of inflammation in the mucosa of the oral cavity.
Rules for care and operation
Acrylic design can last a person for a very long time, but this should follow the guidelines for care:
- After each meal you must remove the denture from mouth and rinse it under running water.;
- At least once a day clean design of the toothbrush with the use of special cleaning products or non-abrasive toothpaste without whitening ingredients;
- Once a day the denture should be placed in disinfectant solution (you can buy at the drugstore and do it yourself from the special dry powders for dilution);
- Once a year it is advisable to visit a dentist for examination of oral cavity and of the prosthesis;
- It is better not to eat products such as crackers, toffee, chewing gum, etc they may damage the prosthesis;
- With the prosthesis must be handled carefully, should not prevent its fall during the events care, as it may break.
How flexible design acrylic?
Due to the fact that the basis of the design made of plastic, it is tough enough that you should consider when searching for the answer to the question «what the dentures – acrylic or nylon?». Low ductility materials makes the design fragile, and the period of adaptation is difficult: in the first week of wearing the patient will feel discomfort, his speech will become slurred and lisping. But after the adjustment period these unpleasant sensations go away, and the use of the prosthesis will be comfortable.
Acrylic or nylon?
Modern dentistry offers a wide range of materials, one of which is nylon – flexible, durable non-toxic material that does not contain in its composition of toxic substances. In order to find out which denture is better – nylon or acrylic, you should compare some of their qualities.
Aesthetic properties better than the nylon prostheses due to the possibility of selection of color basis for the color of the mucous membranes and the manufacture of supporting devices of the same material, making them virtually invisible. Nylon construction elastic and therefore more comfortable to wear, does not injure the mucous membrane of the prosthetic bed, hypoallergenic, not prone to breakdowns.
The disadvantages of nylon structures compared to acrylic are:
- Complex care – they cannot be cleaned with ordinary toothbrush, it is necessary to acquire special tools for maintenance;
- Flexible denture unevenly distributes the chewing pressure on the gums, due to which places the greatest load there are areas of bone atrophy that subsequently leads to the subsidence of the prosthesis and discomfort in use;
- Nylon construction can not be repaired in case of breakage;
- The cost of dentures made of nylon is much higher.
What design is better – nylon or acrylic? A simple answer to this question is impossible. Design of nylon indicated for patients allergic to acrylates, they better restore the lost aesthetics with partial loss of teeth, but when fully edentulous acrylic denture is preferred. Finally decide which the prosthesis is to be installed only after consultation with a prosthodontist.