The term “Dental Intracanal Medication in Endodontics” is one you may have heard in the field of dentistry, but it’s possible that only a few dentists have used it in practice, Although it is necessary between visits. If you think about it, you might assume it’s just placing Calcium Hydroxide (CaOH) on a cone inside the canal! But in reality, it involves more details and broader applications than that, so it’s important to understand when and how to use it.
When Do We Need Dental Intracanal Medication in Endodontics?
- Between Visits: We use it to prevent flare-ups (swelling or inflammation after treatment or bacteria still present in the canals).
- Abscess and Severe Infection: In the case of an abscess or severe infection, we need a treatment that reduces bacterial load and prevents bacteria from growing again.
- Necrotic Cases: For teeth that have lost vitality, Intracanal Medicament is more effective as it fights bacteria in an area that’s no longer protected by the nerve.
- Weeping Canals: If the canal is leaking reddish exudate continuously.
Key Elements of Dental Intracanal Medication in Endodontics
An Intracanal Medication should be:
- Anti-inflammatory: Reduces inflammation and alleviates symptoms.
- Antibiotic: In cases of periapical infection, it’s needed to eliminate bacteria in the affected area.
- Analgesic: Relieves pain after nerve removal, especially in flare-up cases.
Types of Intracanal Medication
1. Calcium Hydroxide:
This is one of the most famous and widely used types of Dental Intracanal Medication in Endodontics and acts as an antibacterial because it is alkaline.
- Advantages:
- Highly alkaline, effectively fighting inflammation that is typically acidic.
- Biocompatible with cells.
- Disadvantages:
- Limited antibacterial activity: While effective for inflammation, it doesn’t kill all bacteria in the canal.
- Poor cohesive strength: It’s weak in terms of bonding within the canal.
- Difficult to insert if in powder form.
- Does not reduce pain as it’s not an analgesic.
- Common commercial brand: Metapex.
Thus, Calcium Hydroxide is not ideal for routine cases alone.
How to Use:
- If in pre-mixed form, place it directly into the canal.
- If in powder form, mix it with saline first, then insert into the canal using material or instrument like Gutta Percha or endo file, and it should ideally be 2mm shorter than the working length.
2. BIO Silver Z:
A mixture of silver nanoparticles and anti-inflammatory agents such as CaOH and analgesics.
The active ingredient in this product is Silver Nanoparticles which has strong bactericidal activity, Although it is not antibiotic so can not lead to drug resistance in bacteria.
- Advantages:
- Contains silver nanoparticles, which are highly effective against bacteria in the canal.
- Silver nanoparticles themselves have an anti-inflammatory effect and are combined with CaOH, which also helps reduce inflammation.
- Contains pain relievers to help relieve pain.
- Does not contain antibiotics so can not lead to drug resistance in bacteria
- Biocompatible with cells.
- Can be used for both vital and non-vital cases (necrotic).
- Easy to insert into the canals.
- Disadvantages:
- Some studies confirm that silver nanoparticles may cause teeth discoloration, while others deny it.
- How to Use:
- Place directly into the canal.
3. Antibiotics as Intracanal Medication:
The most popular option here is Triple Antibiotic Paste (TAP). This isn’t available ready-made and must be prepared.
- Advantages:
- Effective against bacteria in the canal (though not all bacteria, but most).
- Disadvantages:
- Limited antibacterial activity, it works by killing bacteria, reducing infection, and then minimizing inflammation, making it slower to reduce inflammation.
- Doesn’t help with pain relief, so the pain persists.
- Difficult to prepare and takes time.
- Hard to insert into the canal.
- contain antibiotics so may lead to drug resistance in bacteria
- Preparation:
- Required Ingredients:
- 1 tablet of Metronidazole 500mg
- 1 tablet of Ciprofloxacin 500mg
- 5 capsules of Doxycycline 100mg
- Required Ingredients:
- How to Prepare:
- Remove the coats from the tablets, grind them into a fine powder, then mix with distilled water or saline to create a paste.
- How to Use:
- After preparation, place the paste into the canal using tools like a file or plugger, and it should ideally be 2mm shorter than the working length.
This is not the ideal choice for Intracanal Medication except in certain cases.
4. Leder Mix:
A mix of corticosteroids (which reduce inflammation) and antibiotics for Dental Intracanal Medication in Endodontics.
- Advantages:
- Effective antibiotic against bacteria in the canal (though not all bacteria, but most).
- Effective anti-inflammatory due to corticosteroids, though there are many reservations about using corticosteroids in canals.
- Easy to insert into the canals.
- Disadvantages:
- Numerous studies warn against using it in the canals due to the dangerous effects of corticosteroids.
- Not effective for pain relief in necrotic or non-vital pulp cases.
- Some studies suggest it could cause necrosis of tissues in the long run.
- Active ingredient Demeclocycline (tetracycline) can cause teeth discoloration.
- contain antibiotics so may lead to drug resistance in bacteria.
- How to Use:
- Place directly into the canal.
5. Other Intracanal Medication:
There are other products marketed as Intracanal Medication but don’t have a real effect in the canal as Intracanal Medication, such as:
- BIO-C® TEMP: Contains bio-materials that can be used as a temporary dressing for the canal but does not have a real anti-inflammatory or antibacterial effect.
- Waldent Chlorex 2%: Contains chlorhexidine, which has a very mild effect as an anti-inflammatory or antibacterial agent and is very weak on its own.
Conclusion:
Intracanal medication are necessary in to avoid certain situations such as severe infections, inflammation, or to reduce flare-ups between visits. The best choices would be:
- BIO Sliver Z ideal for routine cases, severe infections and necrotic.
- Calcium Hydroxide for routine cases but not ideal dental intracanal medication in endodontics alone.
- Triple Antibiotic Paste for severe infections.
We must be cautious when using antibiotics since they can lead to drug resistance in bacteria, so it’s best to use them only in necessary cases.
Table compares dental Intracanal Medication in endodontics
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