Effectiveness of Four Mini-screws Supported Hyrax for Maxillary Expansion in Early Adulthood: A Randomized Control Trial
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Skeletal maxillary expansion
研究概览
简要总结
This study aims to evaluate the Skeletal and Dento-alveolar expansion in adult patents using Four Mini-screws Supported Hyrax in compare with untreated control group.
详细描述
Aim of the study: To evaluate the Effectiveness of Four Mini-screws Supported Hyrax for Maxillary Expansion in Early Adulthood
Methodology:
- Essential record for orthodontic treatment will be taken.
- impression with bands on upper first molars will be taken.
- Four eyelets will be soldered to the body of the hyrax appliance (size 10, Dentaurum, Germany).
- CBCT will be taken while patient wearing 1 mm thickness vacuum on the lower arch to dis-occlude both arches.
- Delivery, check the retention and fitness of the appliance.
- The appliance will be cemented using band cement(compomer).
- Using 3M contra-angle driver, the screws (Tomas screw size 10, Dentaurum, Germany) will be loaded and inserted.
- Activation of the appliance by opening it two turns immediately, followed by two turns everyday till cross bite correction or appearance of midline diastema.
- Closure of the device, and leave the appliance in-situ for five months as a retention.
- Post-expansion CBCT will be taken and continue fixed orthodontic treatment.
Outcome: skeletal and dento-alveolar expansion will be evaluated
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
- Triple (Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Unilateral or bilateral Dental posterior cross-bite
- •Skeletal Maxillary constriction
- •Male and female patients.
- •Chronological age (18-30 years).
- •Mid-palatal suture maturation (Grade C,D ) according to F Angileri classification
- •Good oral hygiene.
- •No craniofacial anomalies or syndromes
排除标准
- •Scissor-bite
- •Orthodontically-treated
- •functional cross bite due to premature occlusal contact
- •patients with a syndrome
- •cleft patients
- •Mid-palatal suture maturation(Grade A.B,E) according to F Angileri classification
研究组 & 干预措施
Hybrid Hyrax
these patents will be treated using Four mini-screws supported hyrax
干预措施: Hybrid hyrax (Device)
untreated control group
Ethically ,these patents will be treated at the end of the study using the same appliance used for the experimental group
结局指标
主要结局
Skeletal maxillary expansion
时间窗: 5 months interval between pre and post-expansion
To compare the amount of skeletal expansion pre and post expansion
次要结局
- Dento-alaveolar expansion(5 months interval between pre and post-expansion)
研究者
alzubair osman salih
Master Degree student ,Faculty of Dentistry ,Cairo university.
Cairo University