Survival Rate of 2 Implant-supported Short-span Fixed Partial Dentures in the Anterior Mandible: A Retrospective Study
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Implant survival
研究概览
简要总结
Implant supported superstructure is necessary for long term success and durability of the implant itself in terms of stresses distribution and fracture strength capability.1 Stresses falling on an implant are too much greater than those applied on a tooth structure with a periodontal ligament offering a degree of elasticity. The important mechanical and physical properties of materials used for the fabrication of dental prostheses include adequate flexural and tensile strength and modulus of elasticity, maximum fracture resistance, optimal bond strength and adequate polishability.
详细描述
The relationship between implants/ prosthetic components and the surrounding soft and hard tissues is complex and determines the final clinical result. For example, crestal bone resorption, frequently observed following implant placement or following loading, may be related to factors such as the establishment of the biologic width, the macro design of the cervical area of the implant and possible surface treatments, the type of implant/abutment connection, the positioning of the implant in relation to the bone crest, the width of the alveolar ridge, the distance between contiguous implants, the surgical procedure, and the effects of overloading and peri-implantitis. The establishment of the biologic width perse is related to a series of events that results in remodeling of the bone that surrounds the implants, a fact that has been observed by histomorphometry and radiographic analysis.
The aim of the present study was to compare and evaluate the survival rate and crestal bone levels around immediately placed implants in the esthetic zone with delayed, progressive, or immediately placed.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 25 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •fully dentulous people over 25 who complained of the mobility of 4 mandibular incisor teeth, or partially dentulous people who missed 2 mandibular central incisor teeth and had periodontally affected the neighboring lateral incisor teeth.
- •These individuals were subsequently treated with 2 implants supporting FPDs and following a delayed, progressive, or immediate loading protocol
- •Class 0 or 1 bone defects after tooth extraction, were only included in the study
- •The medical records included data regarding implant type, width, and length, surgical procedure, annual hygienist treatments, radiographs, and implant insertion date
排除标准
- •had less than 1 years of follow-up, had incomplete restorative or surgical data, had non-diagnostic radiographs, had more or less than 4 unit fixed partial denture
- •patients did not present for annual follow-up visits to evaluate oral hygiene measures or treat mechanical or technical complications.
- •Individuals with bone defects class 2, 3, 4, or 5 after mandibular lateral incisor tooth extraction were also excluded.
结局指标
主要结局
Implant survival
时间窗: 3 years
The implant is present at the follow-up examination but its condition is not specified.
次要结局
未报告次要终点
研究者
Mohammed El-Sawy
lecturer, Department of Prosthodontics, principle investigator
Menoufia University