دورية أكاديمية
Comparison of the primary stability of orthodontic miniscrews after repeated insertion cycles.
| العنوان: | Comparison of the primary stability of orthodontic miniscrews after repeated insertion cycles. |
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| المؤلفون: | Nenen F, Garnica N, Rojas V, Oyonarte R |
| المصدر: | The Angle orthodontist [Angle Orthod] 2021 May 01; Vol. 91 (3), pp. 336-342. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Edward H. Angle Society of Orthodontia Country of Publication: United States NLM ID: 0370550 Publication Model: Print Cited Medium: Internet ISSN: 1945-7103 (Electronic) Linking ISSN: 00033219 NLM ISO Abbreviation: Angle Orthod Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Appleton, Wis. [etc.] Edward H. Angle Society of Orthodontia. |
| مواضيع طبية MeSH: | Orthodontic Anchorage Procedures*, Animals ; Bone Screws ; Orthodontic Appliance Design ; Swine ; Titanium ; Torque |
| مستخلص: | Objectives: To compare the primary stability of miniscrews after repeated cycles of insertion through insertion torque (IT) measurements and resonance frequency analysis (RFA). Materials and Methods: Sixty titanium miniscrews were divided into two groups according to the insertion protocol: one with predrilled sites and the other self-drilled into porcine iliac crest bone specimens. Each group had three cycles of reinsertion. After each insertion, the IT and RFA were measured. The IT was measured by using a torque meter, and the RFA was measured using the Osstell ISQ device. A total of five miniscrews of each group were selected for sequential assessment of the morphology of their tip and threads using scanning electron microscopy after each insertion cycle. Results: No statistically significant differences were found in the IT values of miniscrews reinserted up to three times in the group with predrilled surgical sites. The IT value increased significantly with the number of reinsertions in the self-drilled group. The RFA value decreased as the number of insertions increased in both groups. Conclusions: Under the conditions of this in vitro study, reinserting miniscrews deteriorates the integrity of their tip and thread. Reinsertion should be discouraged particularly when insertion sites are not predrilled. (© 2021 by The EH Angle Education and Research Foundation, Inc.) |
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| فهرسة مساهمة: | Keywords: Insertion torque; Miniscrews; Reinsertion; Resonance frequency analysis |
| المشرفين على المادة: | D1JT611TNE (Titanium) |
| تواريخ الأحداث: | Date Created: 20201230 Date Completed: 20210510 Latest Revision: 20210510 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC8084464 |
| DOI: | 10.2319/050120-375.1 |
| PMID: | 33378455 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1945-7103 |
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| DOI: | 10.2319/050120-375.1 |