دورية أكاديمية
Failure of ProTaper rotary Ni-Ti instruments used by undergraduate students
| العنوان: | Failure of ProTaper rotary Ni-Ti instruments used by undergraduate students |
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| المؤلفون: | García Font, Marc, Duran-Sindreu, Fernando, Morello Castro, Sergio, Mercadé Bellido, Montserrat, Bueno Martínez, Rufino, Roig Cayón, Miguel |
| المصدر: | Articles publicats en revistes (Odontoestomatologia) |
| بيانات النشر: | Medicina Oral SL |
| سنة النشر: | 2012 |
| المجموعة: | Dipòsit Digital de la Universitat de Barcelona |
| مصطلحات موضوعية: | Materials dentals, Aparells i instruments odontològics, Estudiants universitaris, Odontologia, Dental materials, Dental instruments and apparatus, College students, Dentistry |
| الوصف: | Objective: To evaluate the effect of number of uses, angle and radius of curvature and type of instrument on the fracture of ProTaper rotary instruments when used by undergraduate students. Study design: Three hundred and seventy-six molars, with a total of 1114 root canals, extracted were instrumented by undergraduate students using ProTaper instruments according to the manufacturer´s recommendations. When fracture occurred, data were collected concerning the number of uses, type of instrument, level of fracture, angle and radius of curvature. ANOVA test were used to determine the influence of type of instrument in the incidence of instrument fracture. Logistic regression model was used to determine the influence of number of uses, angle and radius of curvature in the incidence of instrument fracture. Significance was set at p< 0.05. Results: A total of 37 Ni-Ti rotary instruments fractured during the treatment. Fracture occurred in 9.84% (37/376) of the teeth treated and 3.32% of the canals prepared with Ni-Ti rotary instruments (37/1114). A decrease in the radius of curvature of the canal significantly increased the likelihood of fracture (p=0.0001). Instrument fracture significantly increased as the number of uses increased (p=0.0037). No significant differences were found between the 6 types of ProTaper instruments (p=0.8). A reduction in the angle of curvature did not produce a significant decrease in the incidence of instrument separation (p=0.08). Conclusions: The results of this study imply that instrument fracture is linked to radius of curvature and number of uses |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 1 p.; application/pdf |
| اللغة: | English |
| تدمد: | 1989-5488 |
| العلاقة: | Reproducció del document publicat a: https://doi.org/10.4317/jced.50735Test; Journal of Clinical and Experimental Dentistry, 2012, vol. 4, num. 4, p. e199-e203; https://doi.org/10.4317/jced.50735Test; http://hdl.handle.net/2445/119529Test; 675830 |
| الإتاحة: | https://doi.org/10.4317/jced.50735Test http://hdl.handle.net/2445/119529Test |
| حقوق: | (c) Medicina Oral SL, 2012 ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.F31AAA30 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 19895488 |
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