Ten Years Retrospective Study of 4 LOCATOR Attachment of Mandibular Implant Retained Overdenture With 2 Different Distributions.
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- Posterior mandibular ridge resorption (PMandRR)
研究概览
简要总结
. There is little information on the degree of crestal bone loss around 4 inter-foraminal implant-retained mandibular overdentures (OVDs) and the amount of bone remodelling on the anterior maxilla and posterior mandibule on long-term function, particularly with different distributions.
详细描述
Numerous studies confirm the successful use of implants to retain prostheses in the edentulous atrophic mandible. It has been recommended by some authors that clinicians should use 3 or 4 implants in situations that require increased retention, such as high muscle attachment or prominent mylohyoid ridge. LOCATOR attachment as a retentive component has several advantages over other systems, Such as: dual retention through both external and internal mating surfaces, a self-aligning feature which is helpful in guiding patients when placing their denture. There is little information on the degree of crestal bone loss around 4 inter-foraminal implant-retained mandibular overdentures (OVDs) and the amount of bone remodelling on the anterior maxilla and posterior mandibule on long-term function, particularly with different distributions.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 55 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients with 4 implants in the inter-foraminal region.
- •Patients treated by staff and students in the Master's program in Prosthodontics Department according to the following criteria:
- •Edentulous maxilla and mandible for at least 1 year.
- •Problems with retention and stability of the mandibular denture.
- •Mandibular bone height between 15 and 25 mm.
排除标准
- •Patients with relative contraindications, such as
- •A history of para functional habits.
- •Smokers more than 10 cigarettes per day.
- •alcoholism.
- •Patients with a history of radiation therapy in the head and neck region . • Patients within intravenous administrated bisphosphonates., chemotherapy, and mental disorders that could jeopardies their co-operation.
结局指标
主要结局
Posterior mandibular ridge resorption (PMandRR)
时间窗: 10 years retrospective study
The amount of PMandRR will be assessed using posterior area index on a panoramic x-ray which use specific landmarkds.
次要结局
- Anterior maxillary ridge resorption (AMaxRR)(10 years)
研究者
Mohamed Elsawy
lecturer, Department of prosthodontics, principle investigator
Mansoura University