Efficiency of Canine Retraction Using Different Reactivation Intervals
2021年5月23日 更新者：Yehya Mostafa、Future University in Egypt
Comparing Canine Retraction Using Two-week, Four-week, Six-week and Eight-week Reactivation Intervals
Canine retraction after 1st premolar extracion into the extraction space is a routine treatment in orthodontics.
Orthodontic patients requiring first premolar extraction, canine retraction and maximum anchorage were recruited for this randomized controlled trial.
A search of the literature did not indicate the ideal frequency of elastomeric chain reactivation for optimum canine retraction.
The study was approved by the ethical committee.
The first premolars were extracted.
Elastomeric chains were used to retract the canine distally into the 1st premolar space.
The optimum reactivation interval was evaluated regarding the efficiency of treatment in terms of rate of canine retraction, canine tipping and rotation, root resorption and pain at the intervals of 2, 4, 6 and 8 weeks.
Three dimensional imaging, as well as digital scanning were the methods for data collection.
調査の概要
詳細な説明
The canines, 2nd premolars, 1st molars and 2nd molars were bonded and banded.
Leveling and alignment was achieved.
After the first premolar extraction, temporary anchorage devices were inserted interradicular between 2nd premolar and 1st molar.
Canine retraction was performed on a 0.016" X 0.022" stainless steel arch wire.
A power arm was extended to apply the force closer to the center of resistance and achieve bodily movement.
Elastomeric chains were calibrated to deliver a force of 150g and extended from the power arm to the mini screws directly.
Recruited patients were randomly allocated to four groups according to the duration between the elastomeric chain reactivation.
Canine reactivation intervals were 2, 4, 6, or 8 weeks.
Cone beam computed tomography was performed before canine retraction and after 6 months of retraction.
Digital dental casts were taken before canine retraction and monthly for 6 months.
研究の種類
介入
入学 (予想される)
56
段階
- 適用できない
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究連絡先
- 名前：Reem ElShazly, MSc
- 電話番号：+201114666516
- メール：reemhazem24@gmail.com
研究連絡先のバックアップ
- 名前：Rudayna El-Badawy, MSc
- 電話番号：+201159218899
- メール：rudaynaelbadawy@gmail.com
研究場所
-
-
-
Cairo、エジプト、11865
- 募集
- Future University in Egypt
-
コンタクト：
- Yehya Mostafa, PhD
- メール：yehya3d@gmail.com
-
-
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
13年～30年 (子、大人)
健康ボランティアの受け入れ
いいえ
受講資格のある性別
全て
説明
Inclusion Criteria:
- Patients requiring 1st premolar extraction (e.g bimaxillary dentoalveolar protrusion)
- Erupted full set of permanent teeth (excluding 3rd molars)
Exclusion Criteria:
- Systemic diseases that would interfere with bone metabolism
- Craniofacial syndromes
- congenitally missing or extracted permanent teeth.
- periodontally compromised patients
- smokers
- pregnant women
- previous orthodontic treatment
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
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
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的：2-week reactivation interval
Replacement of elastomeric chain every 2 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
アクティブコンパレータ：4-week reactivation interval
Replacement of elastomeric chain every 4 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
実験的：6-week reactivation interval
Replacement of elastomeric chain every 6 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
|
実験的：8-week reactivation interval
Replacement of elastomeric chain every 8 weeks and reestablishing a 150 g force
|
Canines will be retracted using short elastomeric chains.
Force applied to canines will be 150g.
|
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 |
|---|---|---|
|
Rate of canine retraction
時間枠：Baseline to 1 month
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
Baseline to 1 month
|
|
Rate of canine retraction
時間枠：1month to 2 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
1month to 2 months
|
|
Rate of canine retraction
時間枠：2 months to 3 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
2 months to 3 months
|
|
Rate of canine retraction
時間枠：3 months to 4 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
3 months to 4 months
|
|
Rate of canine retraction
時間枠：4 months to 5 months
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
4 months to 5 months
|
|
Rate of canine retraction
時間枠：5 months to 6 months.
|
The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
|
5 months to 6 months.
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Amount of canine retraction
時間枠：Baseline to 6 months
|
The change in distance measured from the canine cusp tip to the frontal plane, in millimeters; measured on CBCT
|
Baseline to 6 months
|
|
Canine tipping
時間枠：Baseline to 6 months
|
CBCT images at T0 and T1 were analyzed using Invivo 5 software.
linear measurements were made from the long axis of the canines (cusp tip to root apex) to FP1 and FP2 for the upper and lower canines, respectively.
|
Baseline to 6 months
|
|
Canine rotation
時間枠：Baseline to 6 months
|
The change in the angle between a line connecting the maximum mesial and distal crown convexities and FP1 and FP2, for the upper and lower canines, respectively; measured on CBCT
|
Baseline to 6 months
|
|
Canine root resorption
時間枠：Baseline to 6 months
|
The change in the canine length, in millimeters, measured from cusp tip to root apex; measured on CBCT
|
Baseline to 6 months
|
|
First molar anchorage loss
時間枠：Baseline to 6 months
|
The change in distance measured from the mesio-buccal cusp tip of the first molar to the frontal plane, in millimeters; measured on CBCT
|
Baseline to 6 months
|
|
Pain score
時間枠：baseline to day 1
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
baseline to day 1
|
|
Pain score
時間枠：Baseline to day 2
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 2
|
|
Pain score
時間枠：Baseline to day 3
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 3
|
|
Pain score
時間枠：Baseline to day 4
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 4
|
|
Pain score
時間枠：Baseline to day 5
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 5
|
|
Pain score
時間枠：Baseline to day 6
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 6
|
|
Pain score
時間枠：Baseline to day 7
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 7
|
|
Pain score
時間枠：Baseline to day 8
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 8
|
|
Pain score
時間枠：Baseline to day 9
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 9
|
|
Pain score
時間枠：Baseline to day 10.
|
The patient makes a mark along the Visual Analogue Scale (VAS) scale denoting the severity of pain: 0-100 0= no pain and 100= worst pain imaginable
|
Baseline to day 10.
|
協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
捜査官
- スタディディレクター：Yehya Mostafa, PhD、Future University in Egypt
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (実際)
2017年4月1日
一次修了 (予想される)
2022年6月1日
研究の完了 (予想される)
2022年6月1日
試験登録日
最初に提出
2021年5月23日
QC基準を満たした最初の提出物
2021年5月23日
最初の投稿 (実際)
2021年5月27日
学習記録の更新
投稿された最後の更新 (実際)
2021年5月27日
QC基準を満たした最後の更新が送信されました
2021年5月23日
最終確認日
2021年5月1日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。