A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files
Abstract Finite element analysis was used to evaluate the stress distribution, estimate the residual stresses, bending, and amount of displacement of two nickel-titanium instruments manufactured by the same M-wire technology but with different cross-section. Materials and methods Two brands of Ni-Ti...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-10-01
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| Series: | Bulletin of the National Research Centre |
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| Online Access: | http://link.springer.com/article/10.1186/s42269-019-0183-x |
| _version_ | 1828496992723009536 |
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| author | Nada Omar Amira Galal Ismail Manar Galal Mohamed H. Zaazou Mohamed Abdullah Mohamed |
| author_facet | Nada Omar Amira Galal Ismail Manar Galal Mohamed H. Zaazou Mohamed Abdullah Mohamed |
| author_sort | Nada Omar |
| collection | DOAJ |
| description | Abstract Finite element analysis was used to evaluate the stress distribution, estimate the residual stresses, bending, and amount of displacement of two nickel-titanium instruments manufactured by the same M-wire technology but with different cross-section. Materials and methods Two brands of Ni-Ti instruments ProTaper NEXT (Dentsply Maillefer), and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland) were scanned with stereomicroscope to produce a two-dimensional model for each file using computer-aided design programs (CAD) (SolidWorks software package), which then was converted into stereolithographic extension to be readable by programming software (MATLAB software) to produce three-dimensional models. The mathematical analysis of files was performed on SolidWorks software package. The mechanical behavior of the two files was analyzed numerically in a SolidWorks package to simulate and measure torsion, bending, and file displacement. Application of a shear moment (torsion) 2.5 N/mm moment of force was applied to the shaft in a clockwise direction, while the last 4 mm of the tip was rigidly constrained to evaluate the stress distribution on each file. As for Cantilever bending, a concentrated load of 1 N at the tip of the file with its shaft rigidly held in place was applied for the finite element models. The vertical displacement was measured and the von Mises stress distribution was evaluated. Results The WaveOne file showed higher torsional stresses accumulation than those accumulated in the ProTaper NEXT. While the ProTaper NEXT showed more bending and file displacement than those showed by WaveOne file. Conclusions The two files rotary models highlighted the different mechanical properties of the files although they share the same manufactured technology M-wire. The ProTaper NEXT showed less torsional stress accumulation and more bending properties. |
| first_indexed | 2024-12-11T12:39:37Z |
| format | Article |
| id | doaj.art-a4c2bf37a7e44ca2b5df449d5a6526b0 |
| institution | Directory Open Access Journal |
| issn | 2522-8307 |
| language | English |
| last_indexed | 2024-12-11T12:39:37Z |
| publishDate | 2019-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Bulletin of the National Research Centre |
| spelling | doaj.art-a4c2bf37a7e44ca2b5df449d5a6526b02022-12-22T01:07:01ZengSpringerOpenBulletin of the National Research Centre2522-83072019-10-014311610.1186/s42269-019-0183-xA comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary filesNada Omar0Amira Galal Ismail1Manar Galal2Mohamed H. Zaazou3Mohamed Abdullah Mohamed4Researcher of Endodontics, Restorative and Dental Materials Department, National Research CentreResearcher of Endodontics, Restorative and Dental Materials Department, National Research CentreResearcher of Endodontics, Restorative and Dental Materials Department, National Research CentreRestorative Dentistry, National Research CentreResearcher of Endodontics, Restorative and Dental Materials Department, National Research CentreAbstract Finite element analysis was used to evaluate the stress distribution, estimate the residual stresses, bending, and amount of displacement of two nickel-titanium instruments manufactured by the same M-wire technology but with different cross-section. Materials and methods Two brands of Ni-Ti instruments ProTaper NEXT (Dentsply Maillefer), and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland) were scanned with stereomicroscope to produce a two-dimensional model for each file using computer-aided design programs (CAD) (SolidWorks software package), which then was converted into stereolithographic extension to be readable by programming software (MATLAB software) to produce three-dimensional models. The mathematical analysis of files was performed on SolidWorks software package. The mechanical behavior of the two files was analyzed numerically in a SolidWorks package to simulate and measure torsion, bending, and file displacement. Application of a shear moment (torsion) 2.5 N/mm moment of force was applied to the shaft in a clockwise direction, while the last 4 mm of the tip was rigidly constrained to evaluate the stress distribution on each file. As for Cantilever bending, a concentrated load of 1 N at the tip of the file with its shaft rigidly held in place was applied for the finite element models. The vertical displacement was measured and the von Mises stress distribution was evaluated. Results The WaveOne file showed higher torsional stresses accumulation than those accumulated in the ProTaper NEXT. While the ProTaper NEXT showed more bending and file displacement than those showed by WaveOne file. Conclusions The two files rotary models highlighted the different mechanical properties of the files although they share the same manufactured technology M-wire. The ProTaper NEXT showed less torsional stress accumulation and more bending properties.http://link.springer.com/article/10.1186/s42269-019-0183-xFinite element analysisNiTi rotary filesProTaper NEXTWaveOneTorsion stressesBending |
| spellingShingle | Nada Omar Amira Galal Ismail Manar Galal Mohamed H. Zaazou Mohamed Abdullah Mohamed A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files Bulletin of the National Research Centre Finite element analysis NiTi rotary files ProTaper NEXT WaveOne Torsion stresses Bending |
| title | A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files |
| title_full | A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files |
| title_fullStr | A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files |
| title_full_unstemmed | A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files |
| title_short | A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files |
| title_sort | comparative finite analysis of the mechanical behavior of protaper next and waveone rotary files |
| topic | Finite element analysis NiTi rotary files ProTaper NEXT WaveOne Torsion stresses Bending |
| url | http://link.springer.com/article/10.1186/s42269-019-0183-x |
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