CBCT Evaluation of Changes in Root Canal Geometry Induced by the Chemical Structure of NiTi Alloys of Three Rotary Systems
| Autor: | Sanda Ileana Cimpean, Anca Ciurea, Adrian Mihai Varvara, Smaranda Buduru, Loredana Adela Colceriu Burtea, Mihaela Hedesiu, Ioana Sofia Ciutrila |
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| Rok vydání: | 2020 |
| Předmět: |
Process equipment
Materials Science (miscellaneous) Process Chemistry and Technology Chemical structure Root canal Metallurgy General Engineering General Chemistry General Medicine General Biochemistry Genetics and Molecular Biology medicine.anatomical_structure Nickel titanium Petrochemistry otorhinolaryngologic diseases Materials Chemistry medicine sense organs General Pharmacology Toxicology and Pharmaceutics |
| Zdroj: | Revista de Chimie. 71:170-177 |
| ISSN: | 2668-8212 0034-7752 |
| Popis: | Preservation of the root canal anatomy is very important for the success of endodontic treatment.Properly instrumentation of curvet root canals is influenced by flexibility of endodontic instruments which depends on composition and thermomechanical treatment of the metallic alloy. The aim of the current study was to compare the changes in root canal geometry after the preparation with two systems that work in reciprocating motion (Reciproc25, Primary Wave One) and another one in continuous rotation (One Shape), using CT measurements. Forty-five canals of extracted molars with curvatures ranging from 9 to 40 degrees were chosen for this study. The canals were divided, according to the canal curvature into three homogeneous groups and were prepared with three different rotary systems: group I with Reciproc file 25.08 (VDW, Munich, Germany), group II with Wave One Primary 25.08 (Dentsply-Maillefer Ballaigues, Switzerland) and group III with One Shape 25.06 (Micro Mega, Bensancon, France).All groups were scanned pre and post instrumentation, using NewTo 3G CBCT (QR, Italy, FOV, 0.16mm voxel size). The following parameters were assessed after measurements on cross-sectional CBCT images: the centering ability, diameter change, canal transportation. All instruments maintain the original canal curvature well, resulting in no significant differences of their centering ability (P]0.05) and canal transportation (P]0.05). The highest increase in diameter of canal was observed with Primary Wave One, which was not statistically significant for the entire canal (P]0.05). Instrumentation with Reciproc was faster than instrumentation with One Shape and Wave One,but the differences were not statistically significant (P]0.05). All systems perform safe and proper canal preparations and can be used in root canal treatment of curved canals. |
| Databáze: | OpenAIRE |
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