Marginal Bone Loss Around Mandibular Implant-retaining Overdentures and Implant Supported Fixed Hybrid Prosthesis: A 5-year Follow-up
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 发起方
- 入组人数
- 19
- 试验地点
- 1
- 主要终点
- Marginal Bone Loss in mm (MBL)
研究概览
简要总结
Few if any studies have compared marginal bone loss (MBL) around implant-retaining overdentures (2 implants with locators) versus implant supported fixed hybrid prosthesis (over 4 implants) in the mandible.
详细描述
Material and Methods
Patients of the saint Joseph university dental clinics, who have already in their records peri-apical radiographs of the implants post loading, will be divided in 2 groups depending on the prosthetic treatment that they have had for 5 years in mouth, and will be recalled for a check-up session during which the investigators will take new peri-apical X-rays by means of the parallel long-cone technique for the implants that are supporting/retaining the prosthesis. A total of minimum 50 implants placed in a minimum of 19 patients will be examined. The mean mesial and distal radiographic MBL and bone to implant contact (BIC) will be recorded by comparing the two X-rays for each implant.
the investigators will also investigate the possibly related factors that may have contributed to this marginal bone loss such as the medical history, smoking habits, oral hygiene, compliance, presence of keratinized tissue and possibility of proper cleaning.
Results: the investigators aim to find a statistically significant difference in the Marginal bone loss around implants assisting these two types of prosthesis and a possible correlation with some risk and modifying factors.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Other
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients treated with mandibular implant-retaining overdentures (2 implants)
- •Patients treated with mandibular implant-supported fixed hybrid prosthesis (4 implants)
- •Patients having in their records a post-loading peri-apical radiograph for the implants
- •Patients who have had their prosthesis for 5 years in mouth
排除标准
- •Patients treated with mandibular implant-retaining overdentures with more or less than 2 implants
- •Patients treated with mandibular implant-supported fixed hybrid prosthesis with more or less than 4 implants Patients treated with any other prosthetic option on implants Patients who don't have a post-loading peri-apical radiograph in their records
结局指标
主要结局
Marginal Bone Loss in mm (MBL)
时间窗: 5 years
MBL in mm around implants in patients having a removable prosthesis over locators and in patients having a screw retained hybrid prosthesis
次要结局
- sex(5 years)
- age(5 years)
- framework design(5 years)
- compliance and attendance to recall sessions(5 years)
- keratinized tissue hight(5 years)
- health status(5 years)
- plaque score(5 years)
- smoking status(5 years)