Bacteria from deep tooth decay or even a leaky filling that finds it's way to the pulp is what kills the nerve in a tooth.
The pulp tissue is cased in a germ free environment although bacteria from tooth decay or a leaky filling can find it's way into the pulp through tooth decay and cause the gums and nerves in the tooth to become infected.
Removing tooth nerve does not hurt and is performed under local anesthesia that numbs the area.
Removing a tooth nerve is also known as a root canal and it's mostly painless other after the procedure you might experience some slight pain and discomfort for awhile which should go away within a day or less.
Removing the tooth nerve is a safe and painless procedure and is done to prevent the development of inflammation and infectious diseases in your oral cavity.
Leaving an exposed tooth root in the gums is not good as it can lead to complications such as pain, infection, swelling and even potentially damage any surrounding tissues and bones.
A retained root fragment can become a breeding ground for bacteria and cause infection, pain, swelling and other serious problems so you should see a dentist if possible to get it treated.
You can live with exposed tooth root although it can lead to serious complications if left untreated such as increased tooth decay, increased sensitivity, gum disease, bone loss and tooth loss.
So it's best to see a dentist if possible when you have exposed tooth root or other tooth infections that don't go away.
A dead tooth root will look like discoloration of the tooth or on the outside and inside of the tooth which can appear black, yellow or gray and the tooth itself can be rotting out and coming part.
A dead tooth root is when a tooth has lost it's blood supply and it may also cause bad breath or taste.
A dead tooth root may feel like intense tooth pain along with swelling or may not even have any pain associated with it depending on the severity of the dead tooth rot.
Dead tooth rot and dead tooth root can lead to symptoms of intense pain, sensitivity to temperature, discoloration or swelling or even no pain or symptoms.
The pain from a dead tooth rot and tooth root can be caused by nerve endings around your tooth's socket, even if the nerve itself is dead and the pain may be more pronounced when you chew or bite down on the affected tooth and the pain may also be triggered by temperature changes, like hot or cold drinks or food and you may also experience sensitivity to sweet foods.
A dead tooth rot or dead tooth may be darker than the surrounding teeth and may turn yellow, gray or even black and the discoloration of the tooth is caused by the breakdown of blood cells that are in the dead pulp.
When a tooth is black inside it is because of a condition called pulp necrosis which is the death of your tooth's internal tissues.
The pulp necrosis or death of your tooth's internal tissues can occur due to severe tooth decay, infection or trauma which can lead to the release of the dark pigments which stain your tooth black.
Having your tooth turn black inside is not normal and you should see a dentist.
The pulp that leads to pulp necrosis is located within your tooth and contains blood vessels and nerves.
And when the pulp in the teeth die and leads to necrosis it releases pigments which stain your dentin which is the layer below your tooth enamel and often colors the tooth a dark or blackish color.
Causes of pulp necrosis include severe tooth decay, trauma and infection...
Bacteria can enter the pulp through cracks or cavities in the teeth and cause an infection called pulpitis and can eventually lead to the pulp necrosis forming.
A blow or injury to your tooth or teeth can also damage the pulp and lead the pulps death and pulp necrosis and black teeth.
And if you have cavities which are left untreated, the cavities can also penetrate deep into your tooth and reach the pulp and cause infection and death of the pulp.
Other potential causes of pulp necrosis are tartar buildup, medications such as tetracycline antibiotics and old dental fillings.
If you have a black tooth you should see a dentist promptly for diagnoses and treatment and if the pulp is dead you may need a root canal to remove any dead tissue and prevent further damage.
And you may also need fillings, crowns or even a tooth extraction ins some cases.