The caries process or facture can rech the most central area of the tooth containing dental pulp (dental nerve)
This structure, called neurovascular bundle contains :
- a nerve
- an artery
- a vein
this complex brings to the dental organ :
Hydration helps to keep the tooth relative resilience to shocks of masticatory function. The ligament also plays a role in this damping.
The dentinogenesis, is the ability of our teeth to produce dentin, during the maturation of the dental organ. Then, during the aging, the pulp chamber of reduced volume gradually as the tooth wears out, and / or is « attacked » by a decay. In the latter case, the reaction dentin is affixed to the periphery of the pulp chamber, reducing the place of the neurovascular bundle and increasing the dentin thickness with respect to « aggression ».
The sensitivity may seem a disadvantage when the tooth is sick, but it is an extremely elaborate alarm system that can prevent serious medical complications.
When should a root canal ?
Tooth decay if it is not treated in time, successively passes through several stages :
3 and 4 stadex that is to say pulpitis and / or necrosis, it is necessary to devitalized tooth to the risk that ite volves into a form of abscess infection.
An untreated tooth abscess can :
- Deform a play or a face , it’s a infectious cellulitis
- Puncturing the skin at the base of the infected tooth, this is a skin infectious fistula. Indelible scar.
- Cause bacteremia and septicemia
- Cause joint arthritis recurrent
- Cause alopecia : localized hair loss and / or beard
- Cause heart complications (Osler’s Disease), kidney or liver
- This operation involves to removing the pathological nerve of the tooth
It is then disinfected and left empty channel seal to prevent recurrence of infection.
When the tooth is devitalized, it must be sustainably protected to avoid any complications (cracks, fractures, infiltration)
Frequently asked questions :
« A dead tooth can no longer be decay » : FALSE
tooth decay is a phenomenon of demineralization affecting the mineral matrix or dentin of the tooth enamel, which has nothing to do with the vitality or not of the tooth. The only consequence is that in this case, the decay will be totally painless.
« A crowned tooth is no longer decay » : FALSE
the prosthetic crown is designed to protect the tooth, but in some (rare( cases where the adustment is incomplete and imperfect tightness of this restoration (loosening relapsed) if bacterial plaque mastery is insufficient, then the caries disease can manifest.
« A crowned tooth must be devitalized » : FALSE
The prosthetic crown is the solution to face with a tooth decay affects more than 3 faces of the tooth and that we can not restore a sustainable manner by another method.
This has nothing to do the tooth nerve.
There is no medical necessity of devitalized teeth except in the absence of sufficient retention, and then we will seek a foothold in the root (false tenon stump).