Failure Rate of Infra-Zygomatic Orthodontic Mini-Screws
Factors Associated With the Failure Rate of Infra-Zygomatic Orthodontic Mini-Screws
調査の概要
状態
条件
詳細な説明
Researchers will evaluate the influence of mini-screw length, diameter, oral hygiene status, age, sex, and loading time on the failure rate of infra-zygomatic mini-screws. Mini-screw failure will be assessed clinically by the presence of mobility or loss of stability.
Participants will:
- Receive fixed orthodontic treatment with a pre-adjusted edgewise appliance system.
- Receive infra-zygomatic mini-screws bilaterally for maxillary anchorage reinforcement.
- Receive a 10 mm × 1.8 mm mini-screw on one side with immediate loading.
- Receive a 12 mm × 2.0 mm mini-screw on the contralateral side with delayed loading.
- Receive standardized orthodontic force using elastic power chain.
- Undergo CBCT assessment to evaluate the position of the inserted mini-screws.
- Be evaluated at baseline and at one-month intervals for three consecutive months to assess mini-screw mobility or failure.
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究場所
-
-
-
Dhaka、バングラデシュ、1000
- Bangladesh Medical University (BMU), Dhaka,1000
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-
参加基準
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- Participants aged 19 to 35 years.
- Both male and female participants.
- Patients requiring absolute anchorage for maxillary arch and orthodontic tooth movement.
- Patients undergoing fixed orthodontic treatment.
- Patients in whom infra-zygomatic mini-screws are indicated for anchorage reinforcement.
- Participants whose oral hygiene status can be clinically assessed.
- Participants willing to provide written informed consent.
Exclusion Criteria:
- Patients with incomplete history or records
- Patients with a history of previous orthodontic treatment.
- Patients with a history of maxillofacial surgery.
- Patients with a history of head or facial trauma.
- Patients with temporomandibular joint disorder.
- Medically compromised patients.
- Patients with diagnosed syndromes, congenital defects, or facial deformities.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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アクティブコンパレータ:Immediate loading mini-screw group
A 10 mm length and 1.8 mm diameter infra-zygomatic mini-screw will be placed on one side of the maxillary arch and loaded immediately with orthodontic force.
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A 10 mm length and 1.8 mm diameter infra-zygomatic mini-screw will be placed on one side of the maxillary arch and loaded immediately with orthodontic force.
|
|
アクティブコンパレータ:Delayed loading mini-screw group
A 12 mm length and 2.0 mm diameter infra-zygomatic mini-screw will be placed on the contralateral side of the maxillary arch and loaded after a delayed period.
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A 12 mm length and 2.0 mm diameter infra-zygomatic mini-screw will be placed on the contralateral side of the maxillary arch and loaded after a delayed period
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
To assess the failure rate of infra-zygomatic orthodontic mini-screws over a three-month follow-up period. Failure will be defined as any degree of clinical mobility or loss of stability of the mini-screw.
時間枠:over a three-month follow-up period
|
This is a split-mouth randomized clinical study in which each participant will receive infra-zygomatic mini-screws bilaterally.
One side will receive a 10 mm × 1.8 mm mini-screw with immediate loading, while the contralateral side will receive a 12 mm × 2.0 mm mini-screw with delayed loading.
The failure rate will be assessed clinically over a three-month follow-up period.Mini-screw failure will be assessed clinically by the presence of mobility or loss of stability.
|
over a three-month follow-up period
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
To assess the failure rate of infra-zygomatic orthodontic mini-screws over a three-month follow-up period. Failure will be defined as any degree of clinical mobility or loss of stability of the mini-screw
時間枠:Over a three-month follow-up period.
|
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Over a three-month follow-up period.
|
その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Factors Associated with the Failure Rate of Infra-Zygomatic Orthodontic Mini-Screws
時間枠:From October 25 to September 26
|
This randomized clinical study will assess the factors associated with the failure rate of infra-zygomatic crest orthodontic mini-screws used for anchorage reinforcement during orthodontic treatment. Researchers will evaluate the influence of mini-screw length, diameter, oral hygiene status, age, sex, and loading time on the failure rate of infra-zygomatic mini-screws. Mini-screw failure will be assessed clinically by the presence of mobility or loss of stability. Participants will receive:
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From October 25 to September 26
|
協力者と研究者
スポンサー
捜査官
- スタディディレクター:Mahmood Sajedeen, BDS,FCPS、Bangladesh Medical University (BMU)
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- BMU/2026/1583
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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