Skip to content

Chemical analysis of the flocculate formed by the association of sodium hypochlorite and chlorhexidine

by M. A. Marchesan, Braulio Pasternak Júnior, Márcia Maisa de Freitas Afonso, M. D. Sousa-Neto, Cristina Paschoalato
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology ()
Get full text at journal


Objective: The association of chlorhexidine (CHX) and sodium hypochlorite (NaOCl) to enhance their chemical properties during root canal biomechanical preparation can lead to a brown flocculate being formed. Therefore, this study evaluated the metals present in their association by atomic absorption spectrophotometry, and evaluated a possible reagent that could dissolve the flocculate, allowing its clinical use. Study design: Five concentrations of CHX and NaOCl were mixed (2.5% NaOCl + 0.2% CHX, 2% CHX + 0.5% NaOCl, 2% CHX + 5% NaOCl, 0.2% CHX + 0.5% NaOCl, and 0.2% CHX + 5% NaOCl). Methanol and hexane, acetic acid, and vinegar were evaluated to dissolve the flocculate. Results: A flocculate was formed with all proportions and concentrations. Spectrophotometry analysis showed the presence of Ca, Fe, and Mg. Conclusion: It can be concluded that the association proposed led to the formation of brown flocculate regardless of concentration and proportion. ?? 2007 Mosby, Inc. All rights reserved.

Cite this document (BETA)

Readership Statistics

20 Readers on Mendeley
by Discipline
80% Medicine and Dentistry
10% Materials Science
5% Agricultural and Biological Sciences
by Academic Status
25% Researcher
25% Student > Master
20% Student > Postgraduate
by Country
10% Colombia
5% Portugal
5% Brazil

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in