Reliability of All on Four Using 2 Zygomatic and 2 Conventional Implants Versus Conventional All on Four Implants Simultaneously for the Rehabilitation of the Atrophied Maxilla (A Randomized Control Trial)
试验速览
- 阶段
- 不适用
- 入组人数
- 20
- 主要终点
- change of function of the masticatory muscles
研究概览
简要总结
Oral rehabilitation by dental implants in the severely atrophic maxilla often represents a challenge. To overcome this difficulty, bone augmentation procedures such as sinus augmentation, guided bone regeneration (GBR), or distraction osteogenesis have been used to obtain adequate bone height and width for proper three-dimensional implant placement. To avoid surgical morbidity and shorten treatment length, alternative methods such as short or tilted implants, as well as zygomatic implants (ZIs),have been proposed and have shown promising outcomes.
详细描述
Placement of dental implants in the pterygo-maxillary region provides adequate posterior bone support for the prosthesis which permits better distribution of masticatory forces without the need of sinus floor augmentation, onlay and inlay grafts, split crest technique, or osteogenic distraction. This allows rehabilitating patients with satisfactory full arch fixed maxillary prosthesis, which is usually spanned from second molar to contralateral second molar tooth.
The purpose of the present study is to compare the Reliability of all on four by 2 zygomatic implants with 2 conventional implant in anterior region versus all on four approach by conventional implant for the rehabilitation of the atrophied maxilla in terms of survival rates and improving the quality of patient's life and involved complication with maxillary sinus.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Supportive Care
- 盲法
- None
入排标准
- 年龄范围
- 20 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients with severely atrophic edentulous upper arch (Cawood class IV, V, VI) that could not be restored with other type of treatment.
- •Patients who had at least 8-12 mm vertical bone height in anterior maxilla to allow installation of at least 2 conventional implants.
排除标准
- •Patients with any systemic disease that might interfere with dental implants placement and/or osseointegration e.g. uncontrolled diabetes, hypertension and osteoporosis, etc.
- •Heavy smoker (> 20 cigarettes daily) and patients with history para-functional habits (e.g. clenching or bruxism, etc.) were also excluded.
- •Intraoral pathological lesion, related to maxilla, maxillary sinus and zygoma.
结局指标
主要结局
change of function of the masticatory muscles
时间窗: baseline & 6 month after the delivery of the prothesis
measuring muscles activtiy of masseter and temporalis muscles by electromyography
次要结局
- Implant primary stability(baseline Immediate after implantation)
研究者
mostafa elmasry
principle investigator
Cairo University