ENDODONTICS: What, How, and Why?

Through years of experience working with patients, I have noticed that many people do not understand the difference between a dental filling and endodontic treatment (root canal therapy).
In fact, these two procedures are often confused.
That’s why I wanted to explain the difference more clearly, focusing specifically on endodontics — the treatment of an infected or damaged tooth.

What Is Tooth Decay (Caries)?

Dental caries is the most common dental disease and one of the most widespread human diseases overall.
It affects the enamel and dentin without yet involving the pulp (the nerve).
In such cases, the tooth can usually be "repaired" with a simple filling during a single visit.
However, when the pulp is affected, full rehabilitation of the tooth requires at least two visits — this is when root canal treatment becomes necessary to restore both function and aesthetics.

What Exactly Is Endodontics?

Endodontic treatment (root canal therapy) refers to the treatment of a tooth with an infected pulp or apical periodontal disease.
During this procedure, specialized endodontic instruments (manual or rotary files) are used to remove the diseased pulp and infected dentin tissue from the root canals.
The canals are then carefully shaped, cleaned, and filled with a biocompatible material to seal them permanently.

Because endodontic treatment is performed within a very small, limited, and often inaccessible space, it is rightly considered a type of microsurgical procedure.

Is Success Guaranteed with Endodontic Treatment?

Several factors influence the success and prognosis of a treated tooth.
Key factors include:

  • A thorough understanding of root canal anatomy,
  • Proper equipment and technology,
  • The expertise and skill of the dental professional,
  • The patient's immune response and willingness to cooperate.

When these conditions are met, endodontic therapy has a very high success rate.

What Causes Pulp Disease (Nerve Damage)?

Pulp and apical periodontal disease usually result from various microbiological and physical factors.
The most common causes include:

  • Dental caries (tooth decay),
  • Periodontal disease,
  • Tooth abrasion,
  • Tumors affecting oral structures.

Other causes may involve mechanical trauma — injuries to the teeth.
Additionally, iatrogenic factors (complications caused by dental treatments) can lead to pulp damage, such as:

  • Heat damage during cavity preparation,
  • Reactions to dental materials (liners, varnishes, temporary fillings),
  • Use of etching agents,
  • Materials for definitive restorations,
  • Orthognathic surgical procedures.

How Are Pulp Diseases Classified?

Pulp diseases are generally classified into several categories:

  • Reversible pulpitis,
  • Irreversible pulpitis,
  • Pulp necrosis or gangrene.

We will discuss these conditions in more detail in the next blog post.


In Conclusion

Endodontic therapy is a painless procedure that, in the majority of cases, restores full function to the affected tooth.
As with any disease, early diagnosis plays a crucial role in achieving successful outcomes.

If you are experiencing symptoms such as sensitivity to heat, cold, or sweets, or if you have spontaneous, long-lasting tooth pain, feel free to contact us for an examination and appropriate treatment.

The professional dental team at our clinic has been operating for many years under the leadership of Dr. Ismar Resić, a specialist in periodontology and oral diseases.
Res Dental
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