A top denture is a removable design that covers implants or existing tooth roots. The covering prosthesis can be made of nylon, plastic or two materials.
In order to better understand what a denture is, it would be advisable to compare it with a removable denture, which everyone probably knows about.
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Features and construction of covering prostheses
Cover Denture can be installed on your teeth, and can be on implants. Dentists believe that they should be placed on implants, since such a construction will last longer. The second advantage is improved fixation, which is important when communicating and eating. When installed on their teeth, too much load will be placed on them, which is fraught with a reduction in their lifespan.
A complete removable denture can exert a strain on the mucous membrane, which leads to dystrophic processes in the jaw area. This disadvantage does not have a pokryvna option
The best method for installation is “all-on-four”. A whole new row of teeth will be installed on 4 implants. Covering dental structures can have many additional devices for more reliable fixation, among them magnetic attachments, elastic fixatives, etc.
The main components of the denture: telescopic system and root attachments. The attachment has 2 parts: internal and external. It can be fixed in a removable denture, then its replacement is carried out without changes in the system. It is best that the prosthesis has 3 locks, but it has a considerable cost. If finances are limited, then 2 locks will be enough.
Depending on the clinical picture and tasks, magnetic clamps are installed. The metal hooks of the clasps fasten the tooth in the neck area. To fix the structure, it can be reinforced with a byugel carcass or metal mesh.
Cost of a denture depends on the policy of the dental clinic and the material used. Full acrylic cost from 10 thousand rubles, partial from 7 thousand rubles. The cost of nylon cover structures starts from 25 thousand rubles, if they are full and from 15 thousand rubles, if partial. Clasps can be set to 20 thousand rubles, provided that they are full and for 13 thousand rubles, if partial.
It is somewhat more difficult to install “teeth” on implants than on its roots. Therefore, in the first case of a covering denture, the cost will be lower, and in the second, a number of preparatory work will have to be done, which will increase the price.
Advantages and disadvantages of covering prostheses
Installing covering prostheses solves the problem of abrasion of hard tissue. Habituation occurs quickly and gently., pain is minimized, because the pressure is evenly applied to the roots of the teeth or implants.
It exerts minimal pressure on the mucous membrane. No need to build up bone tissue. Under the removable structure there is no loss of bone, which is why it will not be necessary to periodically restore and modify the prosthesis. Sensitive people who experience gag reflex feel nothing when installing and while wearing.
Unfortunately, not all patients are suitable cover structures. Only 10% of patients have indications for their installation.After all, you need to have the roots of the teeth or the soil for the installation of implants. This is more a feature than a disadvantage.
Indications and contraindications
Cover Denture set in the following cases:
- the presence of single roots, which will lay a functional load;
- in the absence of teeth, the installation will be carried out on implants;
- with full mandible edentulous (removable in this case will not hold);
- pathological abrasion of solid tissues;
- fracture or removal of a tooth crown.
Do not use covering dentures.if available:
- diabetes;
- diseases of the nervous system;
- diseases of the cardiovascular system;
- bleeding disorder.
Installation of prostheses using “all-on-four” technology
Technology "all - on - four" is installation of the whole structure on 4 implants. But you need to look at the clinical picture of the oral cavity. On one jaw, you can install either two or four implants. Two of them are localized in the place of the front teeth, the second or third, the remaining two in place of the sixth or seventh, that is, at the end of the jaw. The front implants are installed straight, the rear implants at an angle of 45 degrees so that you can install an elongated structure.
Before starting the operation you need tidy teeth and gums. A complete diagnosis of the body should be carried out to exclude contraindications. After that, the doctor studies the oral cavity, makes a scheme for implantation of implants and plans further actions. The duration of the operation does not exceed more than a couple of hours.
Wait until the installation of "teeth" on the implants is more difficult. It is installed on the lower jaw in 2 months, on the upper - in 4 months. WITH upper jaw the situation is more complicated, because after the implants are implanted, the bone must be restored. Temporary constructions are put on this time, which will allow a person to feel comfortable in society.
Permanent dentures are made by a dental technician, based on the casts made. This is done after implantation.
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