Publication: The effect of taper and apical preparation size on fracture resistance of roots
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Date
2020-12-09
Authors
Authors
Yıldız, Ezgi Doğanay
Fidan, Mehmet Eren
Sakarya, Rüştü Ersoy
Dinçer, Buket
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
This study investigated the effect of taper and apical preparation size on the fracture resistance of roots. 84 mandibular incisor teeth were selected. Groups (n = 12): uninstrumented (control group), 25/0.04, 25/0.06, 25/0.08, 30/0.04, 30/0.06 and 30/0.08. K3XF files (Kerr Endodontics, Orange, CA) were used for canal preparation. Fracture resistance was tested using a Universal test machine. For statistical analysis, the level of significance was P <= 0.05, and one-way anova and post hoc LSD tests were used. The control group showed the highest fracture resistance (P < 0.05). No significant difference was found between 25/0.04 and 25/0.06; 25/0.06 and 25/0.08; 30/0.04 and 30/0.06; 30/0.06 and 30/0.08; 25/0.04 and 30/0.04; 25/0.06 and 30/0.06; and 25/0.08 and 30/0.08 (P > 0.05). Significant differences were found between 25/0.04 and 25/0.08; 30/0.04 and 30/0.08; and 25/0.08 and 30/0.04 (P < 0.05). In conclusion, the clinical selection of larger tapers can cause a higher risk of fracture.
Description
Keywords
Residual dentin thickness, Mandibular 1st molars, Rotary instrumentation, Maxillary premolars, Tooth fracture, Filled teeth, Enlargement, Irrigation, Reduction, Impact, Apical preparation size, Fracture resistance, Taper, Dentistry, oral surgery & medicine