The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study).
Background and Objective: The stability of the mini-screw is an important factor for the success of orthodontic treatment using an absolute anchorage system. This study aims to evaluate the ideal insertion angle of a mini-implant in relation to force direction and to evaluate the maximum amount o...
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| Format: | Article |
| Language: | English |
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College Of Dentistry Hawler Medical University
2023-12-01
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| Series: | Erbil Dental Journal |
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| Online Access: | https://edj.hmu.edu.krd/index.php/journal/article/view/236 |
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| author | Lazha Latif Binyamen Zana Qadir Omer |
| author_facet | Lazha Latif Binyamen Zana Qadir Omer |
| author_sort | Lazha Latif Binyamen |
| collection | DOAJ |
| description |
Background and Objective: The stability of the mini-screw is an important factor for the success of orthodontic treatment using an absolute anchorage system. This study aims to evaluate
the ideal insertion angle of a mini-implant in relation to force direction and to evaluate the
maximum amount of force application at a specific angular configuration.
Method: In this experimental study 72 mini-screws were used, 36 of them were used for each
shear and tensile force tests, eighteen samples were taken for the bone density D2 (nine for 60ₒ
angle, and nine for 90ₒ
angle), and 18 others were taken for the bone density D3 (nine for 60ₒ angle, and nine for 90ₒ angle). Guiding stents were fabricated for proper insertion angle, torque and speed were controlled by contra -angled handpiece. Shear and tensile force tests are done with the aid of a Universal Testing Machine.
Results: Mini-implants inserted at 90̊ angle over D2 density bone had higher stability when performing the tensile force test, while in the shear force test mini-implants placed at 60̊ angle were more stable when inserted on bony blocks with D3 density, however it was noted that the results were statistically not significant when compared with 60̊ insertion on blocks with D2 density.
Conclusion: To maintain a stable mini-implant during the orthodontic process, the ideal insertion angle is 90̊ when the force direction is vertical, tensile force, and its more appropriate to place the mini-implant at 60̊ angle when the direction of force is in a horizontal direction, shear force.
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| format | Article |
| id | doaj-art-b1d0676e0aa94f77ad8c90f548a77bfc |
| institution | Kabale University |
| issn | 2523-6172 2616-4795 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | College Of Dentistry Hawler Medical University |
| record_format | Article |
| series | Erbil Dental Journal |
| spelling | doaj-art-b1d0676e0aa94f77ad8c90f548a77bfc2025-02-10T20:48:08ZengCollege Of Dentistry Hawler Medical UniversityErbil Dental Journal2523-61722616-47952023-12-0162The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study).Lazha Latif Binyamen0Zana Qadir Omer1Department of Pedodontics, Orthodontics and Preventive Dentistry, College of Dentistry, Hawler Medical University, Erbil, Iraq.Department of POP, College of Dentistry, Hawler Medical University, Erbil, Iraq. Background and Objective: The stability of the mini-screw is an important factor for the success of orthodontic treatment using an absolute anchorage system. This study aims to evaluate the ideal insertion angle of a mini-implant in relation to force direction and to evaluate the maximum amount of force application at a specific angular configuration. Method: In this experimental study 72 mini-screws were used, 36 of them were used for each shear and tensile force tests, eighteen samples were taken for the bone density D2 (nine for 60ₒ angle, and nine for 90ₒ angle), and 18 others were taken for the bone density D3 (nine for 60ₒ angle, and nine for 90ₒ angle). Guiding stents were fabricated for proper insertion angle, torque and speed were controlled by contra -angled handpiece. Shear and tensile force tests are done with the aid of a Universal Testing Machine. Results: Mini-implants inserted at 90̊ angle over D2 density bone had higher stability when performing the tensile force test, while in the shear force test mini-implants placed at 60̊ angle were more stable when inserted on bony blocks with D3 density, however it was noted that the results were statistically not significant when compared with 60̊ insertion on blocks with D2 density. Conclusion: To maintain a stable mini-implant during the orthodontic process, the ideal insertion angle is 90̊ when the force direction is vertical, tensile force, and its more appropriate to place the mini-implant at 60̊ angle when the direction of force is in a horizontal direction, shear force. https://edj.hmu.edu.krd/index.php/journal/article/view/236Mini-screwStabilityInsertion AngleShear forceTensile force |
| spellingShingle | Lazha Latif Binyamen Zana Qadir Omer The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). Erbil Dental Journal Mini-screw Stability Insertion Angle Shear force Tensile force |
| title | The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). |
| title_full | The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). |
| title_fullStr | The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). |
| title_full_unstemmed | The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). |
| title_short | The Effect of Force Application on the Stability of Mini-Screw in Different Insertion Angles (An in-vitro Study). |
| title_sort | effect of force application on the stability of mini screw in different insertion angles an in vitro study |
| topic | Mini-screw Stability Insertion Angle Shear force Tensile force |
| url | https://edj.hmu.edu.krd/index.php/journal/article/view/236 |
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