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
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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.
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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
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