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[Comparison of two means for evaluation of apical microleakage]
1State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China. smile_pp@126.com
Purpose:
To compare the consistency of two means of evaluating the apical microleakage.
Methods:
Forty-nine extracted single-rooted human teeth were divided into 3 experimental groups of 15 teeth each, in addition to a positive and negative control group of 2 teeth each. The teeth were instrumented, then obturated using lateral condensation and one of three endodontic sealers: AH Plus(group A), Cortisomol(group B) and zinc oxide eugenol(group C). The apical microleakage was measured by transparent tooth technique or dye dissolution each. SPSS 12.0 software package was used for One-way ANOVA and Kruslal-Wallis test.
Results:
The two methods both showed that the microleakage in group A was significantly less (P<0.05) than that in group B and C. There was no significant difference between group B and C(P>0.05).
Conclusion:
Based on the dye penetration method, there is some consistency between the transparent tooth technique and dye dissolution method for evaluating apical microleakage.