Micro–computed Tomographic Evaluation of the Shaping Ability of 3 Reciprocating Single-File Nickel-Titanium Systems on Single- and Double-Curved Root Canals |
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| Institution: | 1. Dental School, Universidad de Los Andes, Las Condes, Santiago, Chile;2. Programa de Inmunología Traslacional, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Lo Barnechea, Santiago, Chile;1. Department of Dentistry, State University of Maringá, Maringá, Paraná, Brazil;2. Private Clinic, Belém, Pará, Brazil;3. Private Clinic, Maringá, Paraná, Brazil;4. Statistics Department, State University of Maringá, Maringá, Paraná, Brazil;1. Unidade de Investigação em Ciências Orais e Biomédicas, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal;2. Centro de Estudo de Medicina Dentária Baseada na Evidência, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal;3. Instituto de Implantologia, Lisboa, Portugal;4. Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, Rio de Janeiro, Brazil;6. Department of Endodontics, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil;5. LIBPhys-FCT UID/FIS/04559/2013, Lisboa, Portugal;7. Department of Endodontics, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal;11. CENIMAT/I3N, Department of Materials Science, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal;12. Dental Specialty Center, Brazilian Military Police, Minas Gerais, Brazil;1. Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, New Jersey;2. Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, California;3. Sector of Angiogenesis Regenerative Medicine, Dr. Hajar Afsar Lajevardi Dental Material and Devices Group, Hackensack, New Jersey;4. Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin;6. Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin;1. Konya Research and Training Hospital, Konya, Turkey;2. Research Center of Dental Faculty, Hacettepe University, Ankara, Turkey;3. Department of Periodontology, Selcuk University, Konya, Turkey;4. Department of Endodontics, Selcuk University, Konya, Turkey |
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| Abstract: | IntroductionWe performed a micro–computed tomographic assessment of the preparation of moderately single- and double-curved root canals using 3 single-file reciprocating nickel-titanium systems: S1 Plus Standard (Sendoline, Täby, Sweden), WaveOne Gold Primary (Dentsply Sirona, Ballaigues, Switzerland), and Reciproc R25 (VDW, Munich, Germany).MethodsSeventy-five moderately curved mandibular molars with 2 separate mesial root canals were assigned to 3 experimental groups (n = 25) (ie, S1 Plus Standard, WaveOne Gold Primary, and Reciproc 25 groups) by forming matched triples according to curvature (15°–40°), radius (≤18 mm), and type of curvature (single or double curved). Teeth were scanned before and after root canal preparation with a resolution of 10.5 μm using micro–computed tomographic imaging (Bruker SkyScan 1272; Bruker microCT, Kontich, Belgium). The following parameters were assessed: changes in root canal volume and surface area, percentage of unshaped canal walls, structure model index, canal transportation, and centering ratio. Data were analyzed using 2- and 3-way analysis of variance with Tukey and Scheffé post hoc tests (significance level of 5%).ResultsNo significant differences among groups were observed concerning all parameters. The type of curvature had no significant effect on all tested parameters. Within all experimental groups, canal transportation increased significantly from the apical to the coronal region, of which the majority was directed toward the furcational area.ConclusionsPreparation with the 3 nickel-titanium systems did not result in significantly different dimensional changes, and there was no significant effect of the type of curvature on all tested parameters. |
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| Keywords: | Canal transportation centering ability micro–computed tomography S-shaped root canal single-file reciprocating nickel-titanium systems |
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