- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07716007
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.
연구 개요
연구 유형
등록 (실제)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Cairo, 이집트, 11865
- Faculty of Oral and Dental Medicine, Future University in Egypt (Department of Orthodontics)
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참여기준
자격 기준
공부할 수 있는 나이
- 성인
건강한 자원 봉사자를 받아들입니다
설명
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.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 하나의
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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활성 비교기: 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.
다른 이름들:
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실험적: 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.
다른 이름들:
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in alveolar bone level
기간: 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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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in alveolar bone thickness
기간: 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)
기간: 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)
기간: 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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공동 작업자 및 조사자
수사관
- 수석 연구원: ahmed mohamed hesham elzoghary, Faculty of Oral and Dental Medicine, Future University in Egypt
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
키워드
추가 관련 MeSH 약관
기타 연구 ID 번호
- FUE.REC (18)/7-2024
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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