Efficiency of Canine Retraction Using Different Reactivation Intervals
2021년 5월 23일 업데이트: 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.
연구 개요
상세 설명
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.
연구 유형
중재적
등록 (예상)
56
단계
- 해당 없음
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 연락처
- 이름: Reem ElShazly, MSc
- 전화번호: +201114666516
- 이메일: reemhazem24@gmail.com
연구 연락처 백업
- 이름: Rudayna El-Badawy, MSc
- 전화번호: +201159218899
- 이메일: rudaynaelbadawy@gmail.com
연구 장소
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Cairo, 이집트, 11865
- 모병
- Future University in Egypt
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연락하다:
- Yehya Mostafa, PhD
- 이메일: yehya3d@gmail.com
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참여기준
연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.
자격 기준
공부할 수 있는 나이
13년 (어린이, 성인)
건강한 자원 봉사자를 받아들입니다
아니
연구 대상 성별
모두
설명
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
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 하나의
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
실험적: 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.
|
|
활성 비교기: 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.
|
|
실험적: 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.
|
|
실험적: 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.
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Rate of canine retraction
기간: 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.
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Baseline to 1 month
|
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Rate of canine retraction
기간: 1month to 2 months
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The distance measured between the canine cusp tips for each two consecutive digital models superimposed on the right and left medial palatal rugae.
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1month to 2 months
|
|
Rate of canine retraction
기간: 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
기간: 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.
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3 months to 4 months
|
|
Rate of canine retraction
기간: 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
|
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Rate of canine retraction
기간: 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.
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5 months to 6 months.
|
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Amount of canine retraction
기간: Baseline to 6 months
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The change in distance measured from the canine cusp tip to the frontal plane, in millimeters; measured on CBCT
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Baseline to 6 months
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Canine tipping
기간: 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.
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Baseline to 6 months
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Canine rotation
기간: Baseline to 6 months
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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
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Baseline to 6 months
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Canine root resorption
기간: Baseline to 6 months
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The change in the canine length, in millimeters, measured from cusp tip to root apex; measured on CBCT
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Baseline to 6 months
|
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First molar anchorage loss
기간: 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
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Pain score
기간: baseline to day 1
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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
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baseline to day 1
|
|
Pain score
기간: 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
기간: 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
기간: 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
기간: 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
기간: 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
기간: 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
기간: 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
기간: 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
기간: 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.
|
공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
수사관
- 연구 책임자: Yehya Mostafa, PhD, Future University in Egypt
연구 기록 날짜
이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.
연구 주요 날짜
연구 시작 (실제)
2017년 4월 1일
기본 완료 (예상)
2022년 6월 1일
연구 완료 (예상)
2022년 6월 1일
연구 등록 날짜
최초 제출
2021년 5월 23일
QC 기준을 충족하는 최초 제출
2021년 5월 23일
처음 게시됨 (실제)
2021년 5월 27일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2021년 5월 27일
QC 기준을 충족하는 마지막 업데이트 제출
2021년 5월 23일
마지막으로 확인됨
2021년 5월 1일
추가 정보
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