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Comparison of extracted teeth and simulated resin blocks on apical canal transportation
Zohreh Khalilak1, Arjang Fallahdoost, Bahareh Dadresanfar
1Department of Endodontics, Dental School, Islamic Azad University/ Iranian Center for Endodontic Research, Tehran, Iran.
Introduction:
We aimed to compare apical canal transportation of extracted teeth and two types of simulated resin blocks.
Materials And Methods:
Mesiobuccal root of extracted maxillary molars, high hardness simulated resin blocks (Knoop hardness=40) and low hardness simulated resin blocks (Knoop hardness=22) were prepared with K-files using step-back technique (n=15 canals in each group). Double exposure radiographic technique was used for extracted teeth. Simulated resin blocks were stabilized and scanned before and after preparation. Pre and post-preparation pictures were superimposed and apical transportation was measured. The data were analyzed statistically using ANOVA and Tukey HSD tests.
Results:
There was no significant difference in apical canal transportation between extracted teeth and high hardness resin blocks (P>0.05). Low hardness resin blocks showed more apical transportation than the other groups (P<0.05).
Conclusion:
Under the conditions of this study, apical canal transportation for extracted teeth and high hardness simulated resin blocks were similar.
