Effectiveness of EDTA and EDTA-T brushing on the removal of root surface smear layer.
The purpose of this study was to compare the removal of root surface smear layer following active application of EDTA gel and EDTA-T (texapon) gel in different concentrations (5%, 10%, 15%, 20% and 24%), using scanning electron microscopy. A total of 220 dentin blocks obtained from the root surfaces of extracted teeth were divided into 3 groups: Group I - (control) application of saline solution (n = 20); Group II - EDTA gel (pH 7.0) was applied in the following concentrations: 5%, 10%, 15%, 20% and 24% (n = 100); Group III - EDTA-T gel (pH 7.0) applied in the same concentrations described above (n = 100). The photomicrographs were evaluated by one calibrated examiner using a smear layer removal index and following statistical analysis (Kruskal-Wallis test). The results demonstrated that the specimens treated with EDTA and EDTA-T gel presented a better smear layer removal than the control group (p < 0.01); no statistically significant differences were observed between the EDTA and EDTA-T groups and between the concentrations tested (Mann-Whitney, p > 0.05). Within the limits of this study, it can be concluded that all treatment modalities effectively removed the smear layer from the root surface. The addition of texapon into the EDTA gel formulation did not increase its effectiveness.
Sampaio
José Eduardo Cezar
JE
Araraquara Dental School, São Paulo State University.
Rached
Ricardo Samih Georges Abi
RS
Pilatti
Gibson Luiz
GL
Theodoro
Letícia Helena
LH
Batista
Luiz Henrique Carvalho
LH
D001641:Bicuspid / Q000187:drug effects / Q000648:ultrastructure; D004492:Edetic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D005782:Gels; D006801:Humans; D008855:Microscopy, Electron, Scanning; D012494:Sampling Studies; D016369:Smear Layer; D012967:Sodium Dodecyl Sulfate / Q000008:administration & dosage / Q000627:therapeutic use; D018709:Statistics, Nonparametric; D013501:Surface-Active Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D013997:Time Factors; D014092:Tooth Root / Q000187:drug effects* / Q000648:ultrastructure; D014099:Toothbrushing
D005782:Gels; D013501:Surface-Active Agents; C075204:Texapon; D012967:Sodium Dodecyl Sulfate; D004492:Edetic Acid