Computer Guided Simultaneous Implant Placement With Tri-cortical Ridge Augmentation Using Chin Cortical Bone Struts in Anterior Atrophic Maxilla: A Case Series
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 10
- 试验地点
- 2
- 主要终点
- Bone quality (change in bone density)
研究概览
简要总结
10 patients having deficient anterior maxilla will be recruited and a preoperative CBCT will be done to evaluate the vertical and horizontal dimensions of the intended alveolar ridge. pre-operative manufacturing of the digital surgical guides performed for Harvesting of the chin cortical bone struts from the symphysial area in the donor site and for Placement of the grafted cortical bone struts and the implant in the recipient site. Intra operatively the donor site (Chin) will be prepared to harvest autogenous bone from the chin aided by the patient's prefabricated bone harvesting guide. The recipient site (Maxillary anterior defect) will be prepared to receive the chin grafts. Grafts will be screwed in position and implants will be screwed in its preparation until it gains primary stability from basal bone, using the prefabricated bone fixation-implant placement guide. Any gaps will be filled with autogenous bone particulates from the chin. A healing tie base Abutment will be screwed into the implant through the third cortex.
Primary stability will be assessed using Osstell device. An immediate postoperative CBCT will be done and superimposed on the preoperative CBCT to measure accuracy of plan transfer to make sure the planning was followed accurately.
Follow up after 6 months and CBCT will be done for bone formation and density assessment and implant exposure for implant stability measurement-using osstell and removal Healing abutment and consecutive prosthetic loading.
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
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients with single or Multiple missing Maxillary Anterior Teeth with vertically and horizontally defective ridges having adequate soft tissue ample.
- •Patients who gave their consent for this trial.
- •Males and females will be included.
排除标准
- •Patients on bisphosphonates or drugs altering bone metabolism, within 2 months before initiating the study.
- •Subjected to irradiation in the head and neck area less than 1 year before implantation.
- •Patients allergic to drugs used in the study.
- •Patients having a history of a major medical condition (ASA 3,4)
- •Untreated periodontitis.
- •Poor oral hygiene and motivation.
- •Uncontrolled diabetes.
- •Pregnant or nursing.
- •Substance abuse.
- •Psychiatric problems or unrealistic expectations.
- •Severe bruxism or clenching.
- •Immunosuppressed or immunocompromised patients.
- •Treated or under treatment with intravenous amino-bisphosphonates.
- •Active infection or severe inflammation in the area intended for implant placement.
- •Unable to open mouth sufficiently to accommodate the surgical tooling.
- •Patients participating in other studies, if the present protocol could not be properly followed.
- •Referred only for implant placement or unable to attend a 5-year follow-up.
结局指标
主要结局
Bone quality (change in bone density)
时间窗: T0 before surgery, T1 immediately after surgery, T2 after 6 month
Serial CBCT scans measuring change in bone density in grey value
次要结局
- Implant stability(day of the surgery and at 6 month)
- Bone quantity (bone formation "height and width")(T0 before surgery, T1 immediately after surgery, T2 after 6 month)
- Accuracy of Plan Transfer(1-3 days postoperatively)
研究者
Ahmed Mohamed Abdrabelnaby Abdelrahman
Dentist
Cairo University