NCT07661277Enrolling By Invitation不适用
Factors Associated With the Failure Rate of Infra-Zygomatic Orthodontic Mini-Screws
Tanzila Rafique1 个研究点 分布在 1 个国家目标入组 30 人开始时间: 2025年9月1日最近更新:
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 发起方
- 入组人数
- 30
- 试验地点
- 1
研究概览
简要总结
The goal of this randomized clinical study is to assess the factors associated with the failure rate of infra-zygomatic crest orthodontic mini-screws used for anchorage reinforcement during orthodontic treatment.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 19 Years 至 35 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •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.
排除标准
- •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.
研究者
Tanzila Rafique
Associate Professor
Bangladesh Medical University
研究点 (1)
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