Various layer mix of sodium hypochlorite (NaOCl) and


Various
former studies have shown that the dentin wall was covered with smear layer
after mechanical shaping of the root canals with instrument (1,2). Disregarding
of the controversy over retaining the smear layer it has been recognized that the
smear layer itself may be infected and may protect the bacteria within the
dentinal tubules (3). Smear layer not only contains organic components but also
have inorganic component in the form of dentin chips etc (1). The penetration
of intracanal disinfectants (4) and sealers into dentinal tubules were
prevented by smear layer, which affects the final seal of the root canal
filling (5, 6, 7).

Irrigants
are paramount for complete debridement of the root canals with mechanical procedures
(3). There is no single potent solution is appropriate for removing both
organic and inorganic parts of the smear layer. To eliminate this smear layer mix
of sodium hypochlorite (NaOCl) and strong chelating agent such as EDTA (Ethylenediaminetetraacetic acid) is
recommended (8). Crumpton et al. proposed
that complete evacuation of smear layer can be achieved by 17% EDTA for 1min
followed by 5.25% NaOCl (9,12). Till now there is no single solution which can
disinfect the root canal system as well as remove the smear layer. On the other
hand the application of strong chelating agent like EDTA for more than minute
and 1ml of volume has been reported to be associated with dentinal erosion
(10,11).

We Will Write a Custom Essay Specifically
For You For Only $13.90/page!


order now

SmearClear
(Sybron Endo, Orange, CA) is a product introduced for eliminating the smear
layer. It contains 17% EDTA solution in conjunction with a cationic (Cetrimide)
and an anionic surfactant. SmearOFF (Vista Detal Products) is Proprietary EDTA
and Chlrohexidine mix. It is prepared with combination of wetting agents and
surface modifiers for best outcomes. These solutions are used only as final
rinse.

Etridonic acid which is soft chelating agent appears
to have a nominal effect on dentine walls and still cut down smear layer. Lottanti et al.
showed that Etridonic acid (HEBP) can be used in combination
with NaOCl without affecting its proteolytic or antimicrobial properties (13,14). In contrast to EDTA, Etridonic
acid is a weak decalcifying agent and hence cannot be used as a mere final
rinse there for it is suggested that HEBP to be mixed with NaOCl to be used as
more complete root canal irrigation solution.

 

Chloroquick
(innovationsendo, India) is a combination of NaOCl and HEBP. Chloroquick High
contains 18% HEBP and 5.25% NaOCl while Chloroquick Low contains 9% HEBP and 3%
NaOCl both be mixed with surfactant tween 80 for complete root canal irrigation
solution. There for this study aims to compare the efficacy of continuous soft
chelating irrigation protocol with Chloroquick solutions to conventional
irrigation protocol on smear layer removal in coronal, middle, and apical
thirds of the instrumented root canals.

x

Hi!
I'm William!

Would you like to get a custom essay? How about receiving a customized one?

Check it out