Turky, M., Gamal, R. (2022). The impact of different root canal preparation sizes and tapers on fracture strength of roots. Egyptian Dental Journal, 68(3), 2805-2812. doi: 10.21608/edj.2022.127781.2026
Mohammed Turky; Reem Gamal. "The impact of different root canal preparation sizes and tapers on fracture strength of roots". Egyptian Dental Journal, 68, 3, 2022, 2805-2812. doi: 10.21608/edj.2022.127781.2026
Turky, M., Gamal, R. (2022). 'The impact of different root canal preparation sizes and tapers on fracture strength of roots', Egyptian Dental Journal, 68(3), pp. 2805-2812. doi: 10.21608/edj.2022.127781.2026
Turky, M., Gamal, R. The impact of different root canal preparation sizes and tapers on fracture strength of roots. Egyptian Dental Journal, 2022; 68(3): 2805-2812. doi: 10.21608/edj.2022.127781.2026
The impact of different root canal preparation sizes and tapers on fracture strength of roots
1Department of Endodontics, Faculty of Dentistry, Minia University, Egypt
2Department of Biomaterials, Faculty of Dentistry, Minia University, Egypt
Abstract
Abstract Introduction: The purpose of the study was to investigate the impact of root canal preparation with different sizes and tapers on fracture strength of roots. Methods: A total of 42 freshly extracted intact human permanent mandibular premolars. Teeth were randomly divided into 7 groups I-VII (n =6): un-instrumented root canals (control), 25/0.04, 25/0.06, 30/0.04, 30/0.06, 35/0.04and 35/0.06 respectively. K3XF rotary files (Kerr Endodontics, Orange, CA) were used for canal instrumentation with distilled water irrigation. Fracture strength was tested using a universal test machine. Results: Group I (control) had the highest statistically significant mean compared with the experimental groups II-VII. The means and standard deviation for groups I-VII were 1022.08±87.61, 819.29±97.11, 691.63±82.39, 719.14±102.58, 668.60±185.20, 669.32±130.63 and 669.32±130.63, respectively. Conclusion: Under the conditions of the present study, we can conclude that increasing preparation size and taper up to 35/0.06 did not affect the fracture strength of roots. Instrumentation of mandibular premolars up to 35/0.06 did not affect their fracture strength.