Different Crowns for Teeth.
Dental crowns are used for clinical cases of varying complexity — when the tooth is severely damaged, destroyed or missing. Each case needs its own orthopedic design. Therefore, before prosthetics, it is important to understand for yourself — what is the difference between the types of prostheses, which is better in aesthetics and functionality for you?
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What do you need to know?
An artificial tooth crown is a prosthesis for restoring the anatomical shape, functions and aesthetics of the dentition. It is attached to a prepared stump (if the tooth is whole) or installed on an implant (with adentia). Artificial teeth have different designs, so they are indicated for different clinical cases.
Indications for prosthetics.
Most of the tooth was destroyed (50-75%).
The reasons for the destruction of hard tissues are different — caries, wedge-shaped defect, trauma. The crown is installed if the defect cannot be eliminated with a seal or tab.
The color or shape of the tooth is broken.
A prosthesis is needed when it is impossible to correct the position or shape orthodontically. Also, with severe destruction or discoloration of the enamel due to fluorosis, pulpitis.
One or more teeth are missing.
In some cases, you can put a bridge prosthesis, but orthopedic dentists recommend installing a crown on the implant.
Treatment of movable teeth.
They are indicated for periodontitis of moderate severity, jaw fracture. To prevent bone atrophy, teeth are splinted with crowns.
Classification of dental crowns.
The most modern prostheses are made of E-max ceramics and zirconium dioxide. They repeat the shape and color of the unit, almost invisible. Metal-ceramic structures are durable, but inferior in aesthetics, so they are offered for inexpensive prosthetics.
We have systematized the types of prostheses according to the main criteria. Modern classification divides crowns by purpose, method of manufacture, time of use. But most of all, patients pay attention to the material.
By the amount of coverage.
Full.
The prosthesis completely covers the dental stump or is installed on the abutment of the implant. Otherwise, the choice depends on the material, the degree of destruction, as well as which group of teeth are being prosthetics.
On the stump tab.
The prosthesis is placed on a stump tab or on a pin. After removing the nerve, a small rod is placed in the root, seals it, and sets the crown on top. Stump tabs are used if the upper part of the tooth is almost completely destroyed.
By appointment.
Restorative.
They are installed when the hard tissues of the tooth are destroyed. The design restores the anatomical shape of the unit.
Supporting ones.
They are used to install a non-removable bridge prosthesis on their own teeth.
Fixing.
They are attached to healthy units for fixing and stabilizing removable bridges, acrylic or clasp prostheses.
Splinting.
Fix the mobility of the dentition during the treatment of periodontitis. They are also suitable for severe overload of units, when the looseness of teeth is just beginning.
By time of use.
Temporary.
Adaptive constructions are used at intermediate stages of treatment. For example, when a doctor corrects the interalveolar height of the bite, installs orthodontic devices to protect the pulp from inflammation. Also, a temporary prosthesis is used after a one-stage implantation for the duration of implant engraftment. Temporary structures have a low service life, after the manufacture of a permanent prosthesis, they are removed.
Permanent.
Non-removable design for a long service life. Permanent prosthesis is most often made of ceramics, zirconium, metal ceramics, stamped ones are practically not used.
