Correction of Anterior Open Bite With Skeletally Anchored Extrusion Arch
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- Mean change in the overbite and overjet "Amount of open bite closure". -Measurements will be done on pretreatment and posttreatment digital study models in millimeters(mm)
研究概览
简要总结
This study will aim to evaluate the effect of skeletally anchored extrusion arch on the dentofacial structures in patients with anterior open bite (AOB).
详细描述
This study will be a prospective clinical study. All the patients will be treated with 0.022 inch slot Roth metal brackets. Orthodontic bands will be cemented to the maxillary first molars. Both maxillary and mandibular teeth, will be sectionally leveled and aligned with superelastic Ni-Ti archwires.
A buccal stiff sectional wire from the first molar to the canine will be added for anchorage reinforcement. Extrusion will be done by inverting a 0.017 × 0.025-inch Connecticut intrusion archwire and inserting it in the molar auxiliary tubes upside-down and miniscrew will be tied to the molar bands to act as additional indirect anchorage.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 15 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients with a class I or a mild class II dental relationship.
- •All permanent teeth are erupted except the third molars.
- •Mild to moderate open bite is present.
- •Normal or minimally increased facial height.
- •Low lip line.
- •No or Mild crowding.
排除标准
- •Patients with skeletal open bite.
- •Posterior cross bite.
- •Trauma to the maxillary incisor.
- •Patients in need to extraction due to sever crowding.
结局指标
主要结局
Mean change in the overbite and overjet "Amount of open bite closure". -Measurements will be done on pretreatment and posttreatment digital study models in millimeters(mm)
时间窗: one year
Amount of open bite closure measurement will help to know the effect of skeletally anchored extrusion arch on the treatment of anterior open bite * Mean change will be measured on pretreatment and posttreatment digital study models by measuring the vertical linear distance between the mesiodistal midpoint of the incisal edge of the uppermost vertically erupted upper central incisors and a horizontal plane projected on the lower central incisor(overbite) in millimeters(mm). * Also mean change will be measured on pretreatment and posttreatment digital study models by measuring the horizontal linear distance between the incisal edge of the most protruded upper central incisor and a frontal plane projected on the lower central incisor (overjet) in millimeters (mm).
次要结局
- Skeletal, dental and soft tissues changes . Measurements will be done on pretreatment and posttreatment lateral cephalometric radiographs in millimeters (mm)(one year)
- Changes that occur in the dentoalveolar vertical development of the upper and lower anterior teeth. -Measurements will be done on pretreatment and posttreatment digital study models in millimeters(mm)(one year)
- Changes that will occur in the upper and lower arch length, perimeter and intermolar width. -Measurements will be done on pretreatment and posttreatment digital study models in millimeters(mm)(one year)
- Mean change in the Antero-posterior position of permanent maxillary first molar. -Measurements will be done on pretreatment and posttreatment digital study models in millimeters(mm)(one year)
- Stability of the treatment after 1, 2 and 3year(s) through measuring mean change in the overbite. Measurements will be done on digital study models in millimeters(mm)(Two year, three and four year.)
- Skeletal, dental and soft tissues changes . Measurements will be done on pretreatment and posttreatment lateral cephalometric radiographs in degree (°)(one year)
- Change in the smile of the patients through measuring mean change in the lenght of the upper lip, amount of incisors and gum exposure. Measurements will be done on pretreatment and posttreatment photographs in millimeters (mm).(one year)