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Root canal dentinal tubule disinfection
K E Safavi1, L S Spangberg, K Langeland
1University of Connecticut Health Center, Farmington.
Journal of Endodontics
|May 1, 1990
Summary
Iodine potassium-iodide effectively disinfected human dentin infected with bacteria in vitro. Calcium hydroxide showed limited effectiveness, with bacteria remaining viable in dentin after extended treatment periods.
Area of Science:
- Endodontics
- Microbiology
- Dental Materials Science
Background:
- Root canal infections are a primary cause of endodontic failure.
- Disinfection of dentinal tubules is crucial for successful root canal treatment.
- Evaluating intracanal medicaments for efficacy against intraradicular bacteria is essential.
Purpose of the Study:
- To compare the antimicrobial efficacy of iodine potassium-iodide and calcium hydroxide within human dentinal tubules.
- To assess the viability of microorganisms in dentin following exposure to these agents.
Main Methods:
- Human teeth roots were infected in vitro with a bacterial isolate.
- Roots were treated with either calcium hydroxide or iodine potassium-iodide for varying durations.
- Microbial viability was determined by culturing entire root samples.
Main Results:
- Iodine potassium-iodide demonstrated effective disinfection of dentinal tubules.
- Bacteria remained viable in dentin samples treated with calcium hydroxide, even after prolonged exposure.
Conclusions:
- Iodine potassium-iodide is a highly effective intracanal medicament for disinfecting dentinal tubules.
- Calcium hydroxide exhibits limited efficacy in eliminating bacteria from dentinal tubules within the tested timeframe.