A plastic crown is one of the ways to temporarily restore the appearance and properties of a tooth. The use of the design does not allow a change in bite, displacement of neighboring units, problems with overgrowth of the hole. A plastic crown with a metal frame can last up to 5 years with proper daily hygiene and the rejection of products with dyes.
Properties of a plastic dental crown
A plastic prosthesis is designed to restore the functions of the dentition. It is used for one unit, several adjacent or the entire row.
Plastic dentures have the following properties:
protection of the turned stump from microorganisms, painful reaction to temperature changes
restoration of aesthetics, chewing function
protection against displacement of neighboring units due to the formation of empty space after the removal of one unit
maintaining speech clarity
well preparation for implantation
Indications for the installation of a plastic crown
The product is installed on a turned tooth if implantation is postponed for some reason or during the manufacture of a permanent structure from another, more durable material.
It is also possible to install permanent plastic crowns on front teeth that do not face a high masticatory load. A plastic prosthesis can look beautiful, so it is able to maintain a charming smile. However, it is not used if it is necessary to restore the properties of molars for a period of 3 months, because the material is not strong enough.
Contraindications
Use is not recommended if the patient has a severe allergic reaction to the material. Other contraindications:
pathological bite
patient under 18 years of age
bruxism (nocturnal grinding of teeth)
People with cardiovascular disease and bleeding disorders will need to consult their doctor. Also, a contraindication is the presence of mental abnormalities that interfere with establishing contact between a specialist and a patient.
Types of plastic prostheses
The installation involves the creation of an impression, as well as the production and fixation of the structure.
Depending on the manufacturing features, plastic crowns for teeth are:
Pressed – made according to casts in a dental chair “in haste”. They allow you to quickly and temporarily hide a visual defect.
Cast – the material is poured into the impression, put on, adjusted to size and polished. It will take two visits to the orthopedic dentist.
Milled – products of special precision, made using special equipment. Such plastic crowns on implants are used when choosing a one-stage prosthetics technique.
Plastic crowns for front teeth
Both temporary and permanent prosthetics with plastic crowns of the front teeth are acceptable, because they are not subject to chewing load. The main thing is not to apply excessive force when biting food and avoid drinks or foods that can stain artificial structures. By installing plastic crowns on the front teeth, you can hide visual defects such as cracks and chips.
Plastic crowns for chewing teeth
If one- or two-stage implantation is planned, temporary plastic crowns can be placed on the posterior teeth. In other cases, their use for molars is impractical.
If you need to wear the product for more than 3 months, the prosthodontist will recommend a design with a plastic coating and a metal frame. It is more durable and reliable. If hygiene standards are observed, the first signs of wear may appear only after 3 years of operation. In general, the service life is 5 years.
Temporary plastic crowns
The plastic article is briefly used to cover the titanium dental implant until osseointegration is complete. It can also be used if it is necessary to mask the visual defect of one or more teeth, but the installation of permanent structures made of more durable materials is not possible for financial and other reasons.
Features of temporary solutions:
can be used for up to 3 months
no metal frame
prosthetics of all types of teeth
Life time
A plastic crown is not forever. This specificity is explained by the tendency of the material to chip and change color. A temporary plastic crown is used for no more than 3 months. Then it is changed to a ceramic-metal product.
With permanent prosthetics, plastic crowns are not installed on molars. However, they are readily used to restore the aesthetics of the front teeth. Their service life is about 2-3 years. Then the products will have to be replaced due to the appearance of chips or fading.
Replacing a plastic crown
The need to remove and install a new design arises with a violation of aesthetics (tarnishing, the appearance of chips and other visible defects) or after the implant has healed to the bone (if a permanent crown can be placed).
Under the influence of ultraviolet, cement is destroyed. Then the orthopedic dentist can easily remove the structure using a special tool. During the procedure, the patient does not experience pain, so there is no need for the use of local anesthetics.
Operation and care
Compliance with simple rules will extend the life of products.
Care instructions:
Refuse drinks with artificial or natural dyes – red wine, coca-cola, tea, coffee. So the products quickly darken or fade.
Use bleaching and antibacterial pastes to prevent the development of microorganisms and blanching of the coating.
Refuse to eat nuts, hard meat, seeds. Do not open bottles with your teeth. Plastic is a fragile material that cracks or chips easily.
Use a special floss and irrigator to protect the tooth gaps from the accumulation of food and bacteria.
Use rinse aid daily in addition to twice a day brushing.