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Effects of oxidative irrigants on root dentin structure: Attenuated Total Reflection Fourier Transform Infrared
Didem Atabek1, Haluk Bodur, Gözde Yalçin
1Department of Pedodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey, Tel: +903122034088; Fax: +903122239226,
Oral Health and Dental Management
|October 7, 2014
Summary
Oxidative irrigants like ozone and sodium hypochlorite significantly degrade collagen in root canal dentin. Higher concentrations of these agents cause more structural damage compared to controls.
Area of Science:
- Dental materials science
- Biomaterials research
- Endodontics
Background:
- Root canal irrigation is crucial for disinfection.
- Oxidative irrigants are commonly used but can affect dentin structure.
- Understanding their impact on organic and inorganic dentin components is essential.
Purpose of the Study:
- To compare the effects of oxidative irrigants on the organic and inorganic structure of root canal dentin.
- To evaluate the impact of ozone, sodium hypochlorite, and chlorhexidine on dentin composition.
Main Methods:
- Human premolar dentin powder was treated with ozone, sodium hypochlorite (5.25% and 2.25%), 2% chlorhexidine, or saline control.
- Treatments were applied for 5 or 10 minutes.
- Attenuated Total Reflection Fourier Transform Infrared Spectrophotometry (ATR FT-IR) analyzed dentin powder composition.
Main Results:
- All oxidative irrigants significantly increased collagen degradation compared to the control and 2% chlorhexidine groups.
- Ozone treatment led to significantly higher collagen degradation than 2.25% sodium hypochlorite and 2% chlorhexidine at 5 minutes.
- No significant difference in collagen degradation was found between ozone and 5.25% sodium hypochlorite treatments.
Conclusions:
- Oxidative irrigants, particularly at higher concentrations, significantly alter the structural composition of human root canal dentin.
- Ozone and high-concentration sodium hypochlorite demonstrate a notable impact on dentin collagen.
- Further research is needed to balance disinfection efficacy with dentin structural integrity.
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