IADR Abstract Archives

Stability of sodium hypochlorite solution as endodontic irrigant

Objectives: Sodium hypochlorite is the main endodontic irrigant. Many authors point out its unstability. The aim of this study is to assess the degradation of the solution and determine the optimum storage condition.

Methods: Two concentrations (10,8% / 2.25%) of ClONa were prepared from La Croix Plus domestic solution at 9,6%, and stored in different conditions : light (with/without), temperature ((4°C/25°C), bottle (transparent/opaque). The hypochlorites are measured out according to Bunsen method at D0, D7, D14, D21, D27, D42, D56. MANOVA analysis is used for the statistical analysis.

Results: Temperature (p = 0,71) and concentration (p = 0,998) have not appeared to be significant degradation factors of ClONa for 2 month. Nevertheless, light is one (p << 0,05) and opaque glass bottle is a good protection (p <<0,05).

Conclusions: PISKIN showed that temperature is a degradation factor of ClONa. Storage in a fridge (without light and at 4°C) appears to be the best mean to keep this solutions. The solutions stored in this condition are not unstable : we show they lose less than 4% of initial concentration within the two months of the study.


Continental European and Scandinavian Divisions Meeting
2005 Continental European and Scandinavian Divisions Meeting (Amsterdam, Netherlands)
Amsterdam, Netherlands
2005
105
Scientific Program
  • Romieu, Guilhem  ( Faculte de Chirurgie Dentaire, Montpellier, N/A, France )
  • Romieu, Olivier  ( Faculte de Chirurgie Dentaire, Montpellier, N/A, France )
  • Levallois, Bernard  ( Faculte de Chirurgie Dentaire, Montpellier, N/A, France )
    • Poster Session
    Pharmacology, Therapeutics, & Toxicology
    09/15/2005