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Evaluation of remaining dentine thickness using wave one and one shape file system with cone beam computed tomography

Annil Dhingra, Deepika Parimoo


Background: The study was to evaluate the eff ect of Wave One file systems and One Shape file system on the dentine thickness in the apical area of the root canal. Materials and Methods: In this study, a total of 40 freshly extracted human mandibular first molars were taken. All the teeth were categorized into two groups namely Group I:Wave One, Group II: One Shape. Mesio buccal canal of mandibular first molar was selected for this study. Conventional endodontic access was prepared in each tooth, and working length was determined using 15-k file. Pre-operative cone beam computed tomography (CBCT) scan of the teeth was taken. Cleaning and shaping of the canal was done according to the file system. Post instrumentation CBCT scan of teeth was taken. The pre and post instrumentation images of the teeth were superimposed and the difference in the area was calculated and statistical diff erence was analyzed. Result: One shape removed less dentin than Wave One file system. Conclusion: Wave One and One Shape showed statistically significant difference in remaining dentin thickness over the different intervals of root canal length. Therefore, it was concluded that One Shape file system removed less residual dentine than Wave One file system.


Cone beam computed tomography; one shape; remaining dentine thickness; wave one

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