| Item type |
文献 / Documents(1) |
| 公開日 |
2022-07-28 |
| アクセス権 |
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|
アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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関連識別子 |
https://doi.org/10.1016/j.jds.2021.11.010 |
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関連名称 |
10.1016/j.jds.2021.11.010 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
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|
タイトル |
Mechanical stability of orthodontic miniscrew depends on a thread shape |
| 著者 |
渡邉, 佳一郎
Mitchell, Bobby
坂巻, 拓馬
平井, 雄三
Kim, Do-Gyoon
デグチ, トオル
スズキ, マサカズ
ウエダ, カンジ
田中, 栄二
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| 抄録 |
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内容記述 |
Background/purpose: Primary stability of orthodontic miniscrew system is of great importance in maintaining stable anchorage during a treatment period. Thus, this study aimed to examine whether the thread shape of orthodontic miniscrew had an effect on its mechanical stability in bone.
Materials and methods: Three different types of miniscrews (type A and B with a regular thread shape; type C with a novel thread shape) were placed in artificial bone block with different artificial cortical bone thickness of 1.5, 2.0 and 3.0 mm. Values of maximum insertion torque (MIT), removal torque (RT), torque ratio (TR), screw mobility, static stiffness (K), dynamic stiffness (K∗) and energy dissipation (tan δ) ability were assessed for each miniscrew system.
Results: The MIT, RT, TR and K of type C miniscrew were significantly greater than those of type A and B miniscrews when the miniscrews were placed in the thinner artificial bone. Furthermore, the TR value of type C miniscrew was more than 1, indicating the MRT value was larger than the MIT value in the novel miniscrew. The values of K∗ and tan δ were almost similar among the three types of miniscrews.
Conclusion: The miniscrew with a novel thread shape showed a higher initial stability compared to those with a regular thread shape. Thus, in order to obtain a sufficient initial stability, it is important to select the type of screw thread that is appropriate for the thickness of the cortical bone. |
| キーワード |
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|
主題 |
Miniscrew |
| キーワード |
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|
主題 |
Mechanical stability |
| キーワード |
|
|
主題 |
Thread shape |
| キーワード |
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|
主題 |
Mechanical parameters |
| 書誌情報 |
en : Journal of Dental Sciences
巻 17,
号 3,
p. 1244-1252,
発行日 2021-12-11
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
19917902 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12795373 |
| 出版者 |
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|
出版者 |
Association for Dental Sciences of the Republic of China |
| 出版者 |
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出版者 |
Elsevier |
| 権利情報 |
|
|
権利情報 |
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| EID |
|
|
識別子 |
386817 |
| 言語 |
|
|
言語 |
eng |
jds_17_3_1244.pdf (1.72 MB)
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