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- W2380558997 abstract "Objective To measure the curvatures of the distobuccal (DB) and distolingual (DL) root canals of permanent three-rooted mandibular first molars. Methods Twenty-five extracted three-rooted mandibular first molars were used in this study. Digital radiographs of each tooth were taken in clinical (CV) and proximal view (PV) with two #8 K files inserted into the DB and DL canals. The radiographs were analyzed with the software Image-Pro Plus. Schneider method and Weine method were used to measure the angles of canal curvatures. The angles formed by the root canal direction near the orifice and tooth axis (canal access angle) were also measured. Results The average curvature of the DB canal was 9.33°± 5.08° in CV, and 10.06°± 5.73° in PV. The difference has no statistical significance (P0.05). The average curvature of the DL canal was 11.28°± 7.30° in CV, significantly lower than 28.34°± 13.76° in PV (P0.001). The angles measured by Weine method were mostly larger than those measured by Schneider method, and the values of the two methods were significantly correlated (r=0.972, P=0.000). The mean canal access angle of DL canal was 27.04°± 8.85° in PV, significantly larger than 13.15°± 6.74° in CV (P0.001). Conclusion A better understanding of the canal curvatures is essential for successful instrumentation of three-rooted mandibular first molars." @default.
- W2380558997 created "2016-06-24" @default.
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- W2380558997 date "2010-01-01" @default.
- W2380558997 modified "2023-09-26" @default.
- W2380558997 title "Measurements of Root Canal Curvatures in the Permanent Three-rooted Mandibular First Molars" @default.
- W2380558997 hasPublicationYear "2010" @default.
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