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Dentin permeability reduction by a sequential application of calcium and fluoride-phosphate solutions
Takashi Komabayashi1, Yohji Imai, Chul Ahn
1Department of Endodontics, Texas A&M Health Science Center Baylor College of Dentistry, 3302 Gaston Avenue, Dallas, TX 75246, USA. tkomabayashi@bcd.tamhsc.edu
Journal of Dentistry
|August 6, 2010
Summary
This study shows that a sequential application of calcium and fluoride-phosphate solutions significantly reduces dentin permeability (Lp). This treatment effectively occludes dentin tubules, offering a potential new method for managing dentin hypersensitivity.
Area of Science:
- Biomaterials Science
- Dental Research
- Nanotechnology in Dentistry
Background:
- Dentin hypersensitivity is often linked to open dentin tubules.
- Previous research suggests calcium and fluoride-phosphate solutions can occlude tubules.
- The effect of this treatment on dentin permeability (Lp) remained uninvestigated.
Purpose of the Study:
- To evaluate the in vitro effect of sequential calcium and fluoride-phosphate solution application on dentin permeability (Lp).
Main Methods:
- Human third molar discs were treated with sequential solutions of disodium phosphate/sodium fluoride and calcium chloride.
- Dentin permeability (Lp) was measured before and after treatment using a fluid flow system.
- Scanning Electron Microscopy (SEM) was used to visualize surface changes.
Main Results:
- A significant reduction in mean dentin permeability (Lp) was observed post-treatment.
- An average decrease of 34% in Lp was recorded across all samples.
- SEM confirmed that reaction products covered the dentin surfaces.
Conclusions:
- Sequential application of calcium and fluoride-phosphate solutions effectively reduces dentin permeability (Lp).
- This treatment demonstrates potential for managing conditions associated with increased dentin permeability.