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Efficacy of EDTA-T gel for smear layer removal at root surfaces
Luiz Henrique Carvalho Batista1, José Eduardo Cezar Sampaio, Gibson Luiz Pilatti
1Department of Periodontology, Dental School of Araraquara, State University of São Paulo (UNESP), Araraquara, SP, Brazil.
Objective:
The purpose of this in vitro study was to investigate the efficacy of EDTA gel preparation, associated with texapon detergent (EDTA-T), for removing the smear layer at human root surfaces.
Method And Materials:
An experimental smear layer was produced by scaling using periodontal curettes, and the root surfaces were etched with the following concentrations of EDTA-T: 5%, 10%, 15%, 20%, 24%, and negative control (saline solution) for 1, 2, or 3 minutes using both passive and active methods. The surfaces were evaluated by scanning electron microscopy, and photomicrographs were evaluated in relation to smear removal.
Results:
All EDTA-T groups were more effective than the control group (P < .0001). EDTA-T at 15% was more effective when applied by the passive method, although this difference was not observed for the active method. The active method was statistically better than the passive method (P < .0001).
Conclusion:
The etching of the root surface with EDTA-T gel by active application, independently of the other factors evaluated, was effective for smear layer removal.
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