[Toxicity of different endodontic antiseptics]

Area of Science:

• Endodontics
• Toxicology
• Pharmacology

Background:

• Endodontic antiseptics are crucial for root canal disinfection.
• Understanding the toxicity of these agents is vital for patient safety.
• Sodium hypochlorite, chloramine, and chlorhexidine digluconate are commonly used.

Purpose of the Study:

• To determine the median lethal dose (LD 50) of three endodontic antiseptics.
• To compare the relative toxicity of sodium hypochlorite, chloramine, and chlorhexidine digluconate.
• To provide data for safer clinical application of endodontic antiseptics.

Main Methods:

• The Litchfield and Wilcoxon method was employed for LD 50 determination.
• Experiments were conducted on albino mice.
• Median lethal doses were calculated for each antiseptic.

Main Results:

• Sodium hypochlorite exhibited a significant toxic effect.
• Chloramine demonstrated a significant toxic effect.
• Chlorhexidine digluconate showed a lower toxicity compared to the other two agents.
• Sodium hypochlorite and chloramine were approximately twice as toxic as chlorhexidine digluconate.

Conclusions:

• Sodium hypochlorite and chloramine possess a considerably higher acute toxicity than chlorhexidine digluconate.
• These findings highlight the importance of careful handling and concentration control during endodontic procedures.
• Further research into dose-response relationships and potential long-term effects is warranted.