Bone Level Changes Using Clear Aligners Compared to Fixed Appliances in Non-Extraction Treatment of Adults
Evaluation of Bone Level Changes Using Clear Aligners Compared to Fixed Appliances in Non-extraction Treatment of Adult Patients: A Randomized Clinical Trial
This study compares two common ways of straightening teeth in adults who have mild-to-moderate crowding of the lower front teeth and do not need any teeth removed: clear aligners and traditional fixed braces.
The main aim is to find out whether the two methods differ in how they affect the bone that surrounds the teeth. Using three-dimensional X-ray scans (cone-beam CT) and digital models of the teeth taken before and during treatment, the researchers measure the level and thickness of the bone around the lower front teeth, the tilt (inclination) of the lower front teeth, and how quickly the crowding is corrected.
Adults are randomly assigned to receive either clear aligners or fixed braces, and the same measurements are compared between the two groups over about six months.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
入学 (実際)
入学
段階
段階
- 適用できない
連絡先と場所
研究場所
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Cairo、エジプト、11865
- Faculty of Oral and Dental Medicine, Future University in Egypt (Department of Orthodontics)
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参加基準
適格基準
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:
- Adults 18-25 years of age, of both sexes.
- Mild-to-moderate mandibular anterior crowding (2-6 mm).
- Angle Class I molar relationship with normal overjet (1-3 mm) and overbite (1-2 mm).
- Full permanent dentition with a healthy periodontium.
- Normal anteroposterior and vertical skeletal pattern.
Exclusion Criteria:
- Any local or systemic condition, or trauma, capable of affecting craniofacial growth and development.
- History of previous orthodontic or interceptive treatment.
- Loss of periodontal attachment.
- Craniofacial anomalies, facial asymmetry or skeletal discrepancy.
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:独身
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
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アクティブコンパレータ:Fixed appliances (Group FA)
Conventional pre-adjusted edgewise fixed appliance (0.022-inch slot, MBT prescription) bonded from first molar to first molar; levelling and alignment with a sequence of nickel-titanium and stainless-steel archwires over approximately six months.
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Brackets bonded first-molar-to-first-molar; alignment sequence 0.014" NiTi → 0.016" NiTi → 0.016 × 0.022" NiTi → 0.017 × 0.025" stainless steel.
Interproximal reduction performed on assigned contacts where indicated.
他の名前:
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実験的:Clear aligners (Group CA)
Three-dimensionally printed, thermoformed clear aligners with bonded attachments and interproximal reduction as indicated; worn ~22 hours/day and changed per the digital staging, with clinical review every four weeks over approximately six months
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Digital intraoral scan and staging (3Shape Ortho Analyzer); 3D-printed models thermoformed into aligners; attachments bonded where planned; sequential aligners worn ~22 h/day.
Interproximal reduction per contact from canine-to-canine is done.
他の名前:
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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in alveolar bone level
時間枠:Baseline (T0) and end of alignment phase (T3)) (approximately 6 months)
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Change (mm) in the distance from the cemento-enamel junction to the alveolar crest on the labial and lingual aspects of the mandibular central incisors, lateral incisors and canines, measured on CBCT (OnDemand software), calculated as the difference between baseline and end-of-alignment values.
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Baseline (T0) and end of alignment phase (T3)) (approximately 6 months)
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二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in alveolar bone thickness
時間枠:Baseline (T0) and end of alignment phase (≈ 6 months)
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Change (mm) in labial and lingual alveolar bone thickness measured at 3 mm and 6 mm from the CEJ and at the root apex of the mandibular central incisors, lateral incisors and canines on CBCT (OnDemand software), from baseline to end of alignment.
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Baseline (T0) and end of alignment phase (≈ 6 months)
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Change in mandibular incisor inclination (torque)
時間枠:Baseline (T0) and end of alignment phase (≈ 6 months)
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Change (degrees) in the inner angle between the long axis of each mandibular central incisors, lateral incisors and canines and the mandibular plane, measured on the sagittal view of CBCT (Invivo/Anatomage software), from baseline to end of alignment.
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Baseline (T0) and end of alignment phase (≈ 6 months)
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Rate of alignment (Little's Irregularity Index)
時間枠:Baseline (T0), 8 weeks (T1), 16 weeks (T2) and end of alignment (T3, ≈ 24 weeks / 6 months)
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Reduction in mandibular anterior crowding quantified by Little's Irregularity Index (mm) - the sum of the displaced anatomic contact points from canine to canine - measured on serial digital models; the change across time points and the percentage improvement from baseline describe the rate of alignment.
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Baseline (T0), 8 weeks (T1), 16 weeks (T2) and end of alignment (T3, ≈ 24 weeks / 6 months)
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協力者と研究者
捜査官
捜査官
- 主任研究者:ahmed mohamed hesham elzoghary、Faculty of Oral and Dental Medicine, Future University in Egypt
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (実際)
一次修了
研究の完了 (実際)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
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
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
その他の研究ID番号
- FUE.REC (18)/7-2024
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?
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