14/10/2026
This is what happens when a small cavity is ignored.
At first, tooth decay begins silently in the enamel. No pain. No obvious warning. Just microscopic damage caused by acid-producing bacteria.You may not know that this is happening inside your tooth but a good dentist will be able to pick this up during a clinical examination and with the help of xrays.
As enamel breaks down, decay moves into dentin — a softer layer that allows bacteria to travel faster and deeper.The outermost enamel layer often remains intact while the bacteria eats away inside the tooth,in the dentine layer.
It is often only in the late stage of a cavity that the outside enamel layer breaks open and at this stage it is often too late to save the tooth with just a filling.Root canal and extraction often becomes the option.
But once decay reaches the pulp, the situation changes completely.
The pulp is the living core of the tooth. It contains nerves and blood vessels inside a rigid, enclosed space. When bacteria invade this area, the tissue becomes inflamed. Pressure builds. Blood circulation becomes compromised.
That deep, throbbing pain many patients describe is not “just sensitivity.”
It is inflamed nerve tissue trapped inside a solid structure with no room to expand.
At this stage, a simple filling is usually no longer enough.
The infected pulp must be removed through root canal therapy — or the tooth may need extraction if it cannot be saved.
If infection progresses beyond the tooth, it can spread into surrounding bone and soft tissues, leading to more serious complications.
Early decay is small, painless, and relatively simple to treat.
A dentist attempts to fix deep cavities as early as possible in an attempt to try and avoid a root canal.The deeper and closer the cavity is to the nerve,the lesser a chance of a positive outcome,however if left to progress it will eventually reach the nerve on its own anyway,requiring a root canal or extraction.
Advanced decay is painful, invasive, and significantly more complex.
Cavities do not suddenly become emergencies.
They progress quietly — until the nerve becomes involved.
Early diagnosis and treatment is not cosmetic.
It is biological protection.
Disclaimer:
This post is for educational purposes only.
