Condylar/Proximal Segments Repositioning Using CAD/CAM Generated Wafer After Bilateral Sagittal Split Osteotomy in Skeletal Mandibular Deformity
试验速览
- 阶段
- 不适用
- 入组人数
- 10
- 试验地点
- 2
- 主要终点
- accuracy of postoperative condylar position in relation to the corrected virtual model
研究概览
简要总结
Maintaining the condylar position after bilateral sagittal split ramus osteotomy (BSSO) is one of the most important aspects in terms of condylar function ,.An altered condylar position can cause internal derangement of the joint, loss of the mandibular angle, increased risk of relapse, condyle sagging, and impaired masticatory function.
In previous years, a great deal of attention has been paid to maintaining the preoperative condylar position during orthognathic surgery. Numerous condylar positioning methods have been reported and could be divided into manual/empirical methods, conventional methods , navigation, and sonographic monitoring, Computer guided methods which is more accurate than other methods
详细描述
unpredictable condylar position after orthognathic surgery, will lead to malocclusion, derangement of the condylar surface, condylar resorption, condylar sag, distraction of the condyles from the fosse. In previous years, several authors had been adopted several techniques to maintain the preoperative condylar position during orthognathic surgery. Numerous condylar positioning methods have been reported which could be divided into conventional techniques (manual maneuvers or aiding tools), Extra and intra oral navigational techniques , surgeons had been utilized these techniques in condylar repositiong after BSSO but it was time and effort consuming and sometimes it was inaccurate. the aim for conducting the research is accurate positioning of condyle three dimensionally to minimize effort and operating time of surgery .
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age of the patient above 18 years
- •Patients needs bilateral sagittal split osteotomy
- •All patients are free from any systemic disease that may affect normal bone healing
- •Sufficient dentition to reproduce the occlusal relationships
- •Patient's consent to participate
排除标准
- •Patient with TMJ Disorders
- •Patients with any systemic disease that may affect normal healing
- •Intra-bony lesions or infections that may interfere with surgery.the presence of
- •Previous orthognathic surgeries
研究组 & 干预措施
computer guided condylar reposition device
surgical procedure : under general anesthesia after BSSO condyle will be repositioned by computer guided repostioning device
干预措施: Bilateral Sagittal Split Osteotomy (Other)
结局指标
主要结局
accuracy of postoperative condylar position in relation to the corrected virtual model
时间窗: immediate postoperative
the accuracy of postoperative condylar position will be assessed using Mimics soft ware ,measuring unit (mm)
次要结局
- operative time(during operation)
研究者
yara mamdouh mustafa
Teaching Assistant
Cairo University