Aside from looking for common problems like plaque and tartar, a dentist can also diagnose if his or her patient has developed a condition that requires further treatment. Some of the common problems that may necessitate further procedures include tooth decay, fillings that leak as well as damage that comes about due to trauma, say from a fall.

All these conditions may infect the blood and nerve supply in the pulp. Root canal treatment may be used to rectify situations that arise as a result of such infections.

What is Root Canal Treatment?

Root canal treatment also called endodontics refers to a dental procedure that is used to cure afflictions in the dental pulp or centre of the tooth. The treatment, normally given as a sequence of therapies, is aimed at stopping all further contamination or microbial invasions from the treated teeth. To better understand how the root canal treatment works, it is important to fully comprehend the structure of a tooth.


Tooth Structure and the Pathology of Tooth Decay

A tooth is basically made up of the crown which is the noticeable part in in the mouth, and the root which extends into the jaw bone. The root ensures the tooth is anchored in position. But aside from this basic description, the internal structure of the tooth contains enamel, dentine, cementum and dental pulp. Dental pulp is the soft tissue at the tooth’s centre. Dental pulp’s primary function is to form dentine, the most important part of any tooth.

Despite the pulp’s important purpose, it is susceptible to bacterial attacks especially if the tooth is not well taken care of. If it is infected, it begins to die. Bacteria can then proliferate, spread. If this happens, both bacteria and the substance produced pass out of the end of the root canal through the small hole at the root where the nerves and the blood vessels enter.

When it gets to this stage, there usually isn’t anything to stop the flow of bacteria into the surrounding tissues. The tissues around the root of the tooth become red and swell as a result. This may then degenerate into extreme pain, facial swelling, also called dental abscess and complete damage of the dental pulp.

The Root Canal Procedure

Damage brought about by bacterial attack can be rectified by complete elimination and sealing out of the said bacteria. This can be done by extraction which refers to removal of the affected tooth or salvaging the tooth by root canal treatment to keep off bacteria. Surgical removal of the dental pulp tissue is also recommended where the tooth is considered threatened such that future infections are very likely or inevitable.

The procedure involves drilling the pulp chamber and removing the infected dental pulp. The dentist then drills out the root canal nerves using H or K files. These essentially are long needle-like hand instruments. When drilling out the nerves, dentists normally start with smaller file sizes (pathfinders) and progress systematically to larger files as they aim to further widen the canals. This process serves three functions; removal of debris, extraction of the infected tissue as well as facilitating a greater penetration for the irrigating solutions.

Successful drilling usually is followed by filling up of all the root canals and the empty pulp chambers with inert material. Once the canals are filled, the opening is then sealed out. Because this process leaves the tooth void of blood supply and nerves, it is best that such a tooth be covered with a crown.

Gutta-percha is used as the standard filling material. It is a natural polymer derived from the latex of percha tree. Standard root canal therapy technique involves putting a gutta-percha cone and sealing cement inside the cleaned out canal. Another technique involves pressing or injecting heat-softened or melted gutta-percha into the passages of the root canal. This thermal technique is however unreliable in certain instances because gutta-percha shrinks while cooling; using a combination of techniques is advised in such situations. The material is however radiopaque as such allows verifications to be conducted to see if the canal passages have been completely sealed out.

Another filling material is Sargenti Paste, known by trade names N-2 Universal or RC-2B White among other names. It however is not as commonly used as gutta-percha. This filling material contains paraformaldehyde, a polymer of formaldehyde.

How Much Does a Root Canal Procedure Cost?

National Health Service provides dental services but patients have to pay for such a procedure. The cost of obtaining a root canal treatment is £50.50. This fee includes charges for examinations, X-rays and consultations on how to prevent follow-up problems. Patients who want crowns installed after the procedure pay a total of £219.

The costs in private practice vary by location. According to a survey carried out by an online private health care search engine and published in The Telegraph, the cost of a root canal therapy in the UK can be as low as £60 or as high as £595 depending on the patient’s location.

Is the Root Canal Procedure Painful?

Many patients fear root canal therapy probably because of the painful abscess associated with it. Modern techniques are however considerably painless because local anaesthetic is incorporated in the procedure. Dentists can also administer pain control medication before or after the procedure.

There are instances where achieving pain free state before performing the procedure may be tricky. Abscessed tooth having gum blisters filled with fluid or swollen tissue are examples of tricky instances. Pus contained in the abscess may contain acids which can inactivate the injected anaesthetic. A dentist operating such a case may be forced to cut the abscess to drain the pus out. While this in itself is painful; draining the pus also causes the release of pressure that is built up in and around the tooth, this too is painful.

What Makes Someone a Suitable Candidate for Root Canal Treatment?

Patients who suffer bacterial attack that degenerates into death of the pulp should get root canal treatment. Usually, pulp infections are caused by tooth decay. The common signs of infection are pain when chewing, biting or when drinking or eating cold food or drink. Other signs may include swelling of the gum near the infected tooth, darkening of the infected tooth, pus from the tooth and general facial swelling. It is advisable to see your dentist if you experience toothache.

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