NCT06050187Enrolling By Invitation不适用
Accuracy of 3-dimensional Printed Implant Cast Versus Conventional Stone Cast for Edentulous Mandibular Arch: A Comparative Study
适应症
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 入组人数
- 20
- 试验地点
- 2
- 主要终点
- accuracy of 3D printed casts
研究概览
简要总结
This study will be conducted to compare between accuracy of 3D printed implant cast produced from digital impression and conventional stone cast produced from conventional splinted open tray impression for edentulous mandibular arch with four implants.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 45 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •• Patients were healthy and free from all systemic diseases that affect osseointegration or bone resorption around the implant as recorded from medical and dental history.
- •Patients were free from all oral pathological conditions and any remaining roots which were verified by pre-operative panoramic radiograph.
- •Patients with U shaped arch, flat mandibular alveolar ridge covered with even compressibility healthy mucosa and gingival thickness of about 2mm verified by dual scan of cone beam computed tomography (CBCT) during treatment planning. Fig.(1)
- •Adequate residual alveolar bone quality D2 bone type in the anterior and premolar regions according to the Misch bone density classification scheme (850 to1250 housefield units) confirmed by CBCT.
- •Angel's class I maxillomandibular relation with moderate inter- arch space (20 mm) confirmed through tentative jaw relationship, and restorative space of at least 15 mm determined by putty index technique
- •Patients complain from poor retentive mandibular denture seeking for alternative fixed options.
- •Patient who is motivated, agreed with the follow-up visits and willing to return for follow-up appointments.
排除标准
- •• Patient with absolute contraindications that interfere with surgical placement and osseointegration of implants as uncontrolled diabetes mellitus, generalized osteoporosis, recent myocardial infarction, patient with radiotherapy.
- •Patient with relative contraindication such as UN controlled diabetes mellitus, moderate smoking and alcoholism, patient with TMJ disorder and heavy smokers for more than10 cigarettes per day.
- •Patient with local contra indication as insufficient bone quality, localized lesion in canine area and premolar area, unfavourable position of the lower alveolar or mental nerve, bone defects as verified by cone beam CT.
- •Uncooperative patient.
结局指标
主要结局
accuracy of 3D printed casts
时间窗: 6 month
Accuracy of 3D printed casts will be evaluated digitally by geomagic software
次要结局
未报告次要终点
研究者
研究点 (2)
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