In vitro study on the action of MTAD and EDTA for removal of the smear layer in the apical third of the root canal
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Data
2015
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Resumo
Objective: This study aimed to evaluate the in vitro effects of
BioPureTM MTAD ® and 17% EDTA on the removal of the sme-
ar layer on instrumented teeth with the aid of 1% NaOCl. Me-
thodology: Human single-rooted teeth (maxillary incisors and
canines) (n=25) were randomly divided into two Experimental
Groups (n=10/group) and a Positive Control Group (n=5/group).
After the instrumentation, the final irrigation was performed
with 10 mL of 17% EDTA/1% NaOCl solution in Experimental
Group 1 for 1 minute and with BioPureTM MTAD ® in Experi-
mental Group 2. Next, the teeth were cleaved, and the degree
of cleanliness of the apical dentin surface was evaluated using
scanning electron microscopy (SEM). Results: This study revealed that the 17% EDTA/1% NaOCl solution was more effecti-
ve in removing the smear layer in the apical third of the root canal
compared to MTAD (p<0.05). However, statistical analysis of
the results revealed that 17% EDTA was more effective in remo-
ving the smear layer 6 mm from the apex in EXPG 1-6, which
indicates that the more distant the smear layer is from the apex,
the more effective is the chelating solution in removing the sme-
ar layer. Conclusion: The two tested substances were not fully
effective in the complete removal of the smear layer in the apical
third of the root canal, although 17% EDTA/1% NaOCl solution
showed greater efficacy when compared to BioPureTM MTAD ® ,
particularly at 6 mm from the apex.
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Palavras-chave
Smear layer, Camada de esfregaço, EDTA, Endodontics, Root canal, Scanning electron microscopy, EDTA, Endodontia, Canal Radicular, Microscopia eletrônica de varredura
Citação
GESTEIRA, Maria F. M. et al. In vitro study on the action of MTAD and EDTA for removal of the smear layer in the apical third of the root canal. Robrac: revista odontologica do Brasil Central, Goiânia, v. 24, n. 69, p. 62-67, 2015.