The Influence of the Crown-implant Ratio on the Crestal Bone Level and Implant Secondary Stability - 36 Months Clinical Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 30
- 主要终点
- Clinical measurement of implant stability
研究概览
简要总结
The aim of the study was to determine whether implant length and the crown-to-implant (C/I) ratio influence implant stability and the loss of the surrounding marginal bone, and whether short implants can be used instead of sinus augmentation procedures.
详细描述
The patients participating in the study (n=30) had one single tooth implant - a short (OsseoSpeed™ L6Ø4 mm, Implants) or a regular implant (OsseoSpeed™ L11 and L13Ø4 mm, DENTSPLY Implants) - placed in the maxilla. The evaluation was based on clinical and radiological examination.
The crown-to-implant ratio was determined by dividing the length of the crown together with the abutment by the length of the implant placed crestally. Mean crown-to-implant ratios were calculated separately for each group and its correlation with the MBL (marginal bone loss) and stability was assessed. The authors compared the correlation between the C/I ratio values, MBL and secondary implant stability.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Non-smoking patients with no systemic or local diseases were qualified.
- •Additional inclusion criteria were as follows:
- •minimal apicocoronal height of the alveolar ridge of 6 mm in the region of the implant insertion in the pre-surgical qualification
- •minimal width of the alveolar ridge of 6-7 mm in the region of interest
- •HKT (height of the keratinized tissue) higher than 2 mm
- •API ≤ 35 (Approximal Plaque Index)
- •(Plaque Index)
- •Bone Type III or D2 were included in the study
- •No graft procedures in the area of interest,
排除标准
- 未提供
研究组 & 干预措施
Short implants Treatment
Group 2 (G2; n=15 patients) had short implants (OsseoSpeed ™ L6mm Ø4 mm) [DENTSPLY Implants, Waltham, MA, USA] placed without sinus lift and augmentation procedure.
干预措施: Short implants Treatment (Other)
Regular Implants Treatment
Group 1 (G1; n=15 patients) had conventional dental implants (OsseoSpeed ™ L11 Ø4 mm and L13 Ø4 mm) [DENTSPLY Implants, Waltham, MA, USA] placed, preceded by the sinus lift procedure from a lateral window approach with the application of the xenogeneic bone graft Geistlich Bio-Oss® [Geistlich AG, Wolhusen, Switzerland]. The lateral window approach sinus lift surgery was performed 6 weeks prior to the implant placement by the same surgeon.
干预措施: Regular implants Treatment (Other)
结局指标
主要结局
Clinical measurement of implant stability
时间窗: 36 months
Evaluation of implant secondary stability in both groups. Stability measured and evaluated with Periotest(R) device - after 36 months.
次要结局
- Radiological measurement of marginal bone loss around implant(36 months)
研究者
Jakub Hadzik
PhD, DDS
Akademicka Poliklinika Stomatologiczna