- Dental Crowns - what will suit you?
The structure of the teeth
Each tooth consists of a crown, projecting above the surface of the gums, the root, which is inside the gums and cervical - neck of the tooth located between the crown and the root. The neck of the tooth tightly covered by gum, the epithelium of which forms a strong bond with tooth enamel. Inside the crown of the tooth is a tooth cavity filled with soft tissue or pulp. The cavity of the tooth passes into the roots in the form of channels. Different teeth have different bits and a different number of roots.
Natural tooth crowns
Since the main function of a natural tooth crown - mechanical processing of food, it is composed of hard tissue - dentin and enamel covering it.
Enamel is the hardest tissue of the tooth, it contains a large amount of mineral salts (up 97%) and only about three percent of organic substances. Dentin is the bulk of the tooth crown, it contains little more than 70% of mineral salts, the rest - water and organic substances.
In the cavity of a tooth crown is pulp (loose connective tissue containing a large amount of interstitial fluid), filled with blood vessels and nerves.
Artificial tooth crown and their types
Natural crown can break from tooth decay
More about caries - take care of your teeth until it's too late
, Injuries and heavy loads, lose their color, etc. Restore destroyed tooth with artificial dental crowns. Artificial crown - a removable denture, which is set to restore the tooth
Restoration of teeth - which way is the safest?
. Make artificial dental crowns made of plastic, metal, porcelain and metal. But no matter from which the crown is made, it must:
- match the shape and color of the natural tooth crowns of the person;
- be neutral with respect to the surrounding tissues without causing allergies, chemical attack or physical trauma of these tissues.
Artificial crowns are restorative fixing (anchor) and provisionally. Restorative crowns restore the shape and appearance of the tooth in its destruction. Fixing the crown - is the support for different types of dental prostheses and orthotics. Provisory crown or protective caps are used to protect the teeth undergoing dissection at the time of manufacture the permanent crown.
Plastic dental crowns are made relatively simple and therefore inexpensive cost, but are low strength, frequently with time change color and porosity due to its structure are often a place of accumulation of pathogenic microflora. Currently, plastic crowns are used as for the protection of provisional prepared for prosthetics
Fundamentals of prosthetics - not just for the elderly
at the time of fabrication of prostheses.
Metal dental crowns
Metal dental crowns have their positive aspects as durability and strength, but now hardly used for prosthetics front teeth due unaesthetic appearance. But they are often used for prosthetic posterior side.
Today there are a large number of metals and alloys for making metal crowns of gold, hromokobaltovye, silver alloys, titanium, steel, coated in gold, etc. Gold is not an optimal material for the prosthesis, as able to degrade over several years. Most popular now enjoy a variety of alloys of precious metals such as gold and platinum, silver and palladium, titanium alloys.
Porcelain dental crowns
Porcelain or ceramic crowns have excellent aesthetic qualities, so often used for anterior teeth prosthesis. The disadvantage of porcelain crowns is their low strength and fragility. In appearance porcelain crowns are very similar to natural tooth crowns, as they have a special translucency similar to natural teeth.
Dental crowns cermet
Metal-- a combination of a metal frame with a porcelain coating. Tooth crowns of cermets have excellent strength and aesthetic qualities, they can be installed on the front teeth, and the side chewing. Currently, the frame is often used as zirconia, which is not metal. This bit stronger than the usual metal-ceramic, is absolutely neutral in relation to the periodontal tissues and looks good.
Loss of teeth these days is not a tragedy, the loss of any tooth or even all of their teeth can always be restored.