Amalgam is an alloy of mercury with various metals used for dental fillings mostly contain silver. It looks like metallic black colour.
Several materials can be used to restore decayed teeth. These include composite resins, glass ionomer materials, metal or all-ceramic inlays, onlays or crowns and metal-porcelain crowns. Different restorative options may be more suitable for particular restorations.
Endodontic treatment is necessary when the pulp becomes inflamed or infected. The inflammation or infection can have a variety of causes: deep decay, repeated dental procedures on the tooth, faulty crowns, or a crack or chip in the tooth.
When the soft pulp tissue (nerves, blood vessels, and other cells inside a tooth) gets infected due to any reason, there are only two options to remove the infection permanently:
1. Root Canal
It is obviously the procedure of choice as the decayed tooth is repaired and restored, so it can be used for many years to come, many times, lifelong!
Indications of RCT: A deep cavity leading to severe toothache while chewing food or even at rest; or severe pain while taking hot or cold food. However, pain is not a necessary symptom of tooth decay, and absence of pain doesn't mean the tooth is alright. Many times dental treatment in the form of a restoration or RCT is required in an absolutely painless tooth. Traumatized front teeth may also require RCT as the trauma severs the tooth's blood supply, making it non-vital, and causing black discolouration.
Sometimes a tooth may need to undergo intentional root canal treatment before placing a crown.
Procedure: It is the removal of the tooth's pulp, a small, thread-like tissue in the centre of the tooth. Once the damaged, diseased or dead pulp is removed, the remaining space is cleaned, shaped and filled. This procedure seals off the root canal. Years ago, teeth with diseased or injured pulps were removed. Today, root canal treatment saves many teeth that would otherwise be lost
This is the root canal that is carried out on a tooth that has previously had undergone this procedure.
In Failure of root canal treatment Recurrence of symptoms, infection such as dental abscess may occur.
Endodontic treatment may fail for many reasons: one common reason for failure is inadequate chemo mechanical debridement of the root canal. This may be due to poor endodontic access, missed anatomy or inadequate shaping of the canal, particularly in the apical third of the root canal
A post and Core is a type of dental restoration that is utilized when there is inadequate tooth structure remaining to support a traditional restoration. A small rod, usually metal, is inserted into the root space of the tooth and protrudes from the root a couple of millimeters. This rod is referred to as a post. The post is then used to hold a filling, or core, in place. Without this post there would not have been enough tooth structure remaining to hold the filling required. Post and core are help full to build up a tooth structure on which we can placed a crown. In this way we can save a badly destructed tooth in its esthetic and functioning form for many years.
A crown is a type of dental restoration which completely caps or encircles a tooth or dental implant. Crowns are often needed when a large cavity threatens the ongoing health of a tooth. As new technology and material science has evolved, computers are increasingly becoming a part of crown and bridge fabrication, such as in CAD/CAM dentistry.
A dental crown may be needed in the following situations:
1. To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth
2. To restore an already broken tooth or a tooth that has been severely worn down
3. To cover and support a tooth with a large filling where only a little tooth structure is left
4. To hold a dental bridge in place
5. To cover badly shaped or severely discoloured teeth
6. To cover a dental implant
7. To make a cosmetic modification
Crowns include gold alloy, other alloys (for example, palladium)base-metal alloy . For placement of metal crown less tooth structure cutting is required.
A bridge is a fixed dental restoration used to replace a missing tooth by joining an artificial tooth permanently to adjacent teeth or dental implants.
Types of bridges may vary, depending upon how they are fabricated and the way they anchor to the adjacent teeth
A dental implant is a "root" device, usually made of titanium, used in dentistry to support restorations that resemble a tooth or group of teeth to replace missing teeth.
Virtually all this placed today are root-form endosseous implants, i.e., they appear similar to an actual tooth root and are placed within the bone. The bone of the jaw accepts and osseointegrates with the titanium post. Dental implants can be used to support a number of dental prostheses, including crowns, implant-supported bridges or dentures.