Investigating the Accuracy of Conventional vs Digital Impressions and Conventional vs 3D Fabricated Casts in Capturing the Emergence Profile Around Maxillary Anterior Single Implant-supported Crowns
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 15
- 试验地点
- 2
- 主要终点
- 3D RMS - root mean square difference
研究概览
简要总结
This study compares conventional impression and cast fabrication to direct/indirect digital scannig and 3D printed casts regarding their accuracy in replicating the peri-implant emergence profile of single implants in the maxillary anterior region (FDI #15-25).
详细描述
Correct design of the peri-implant emergence profile (EP) is crucial for maintaining the health of the supracrestal complex and long-term success of the implant implant-prosthodontics. After its formation with a provisional restoration, its shape needs to be transferred to the final restoration via conventional elastomeric or digital (direct/indirect) impression taking.
Our aims are to investigate around maxillary anterior single implants in patients with thick gingival phenotype:
- the accuracy of direct digital impression vs indirect digital impression vs conventional elastomeric impression in capturing the EP and implant position
- the accuracy of 3D printed cast with conventional gingival mask vs conventional epoxy-resin cast with gingival mask in replicating the EP and implant position
- the amount of soft tissue collapse at 0,2,10,20 minutes following the removal of the provisional restoration in case of direct EP scanning
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- None
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
- •Adult above 18 yo
- •No systematic deseases
- •Good oral hygene (FMPS < 25%)
- •Stable occlusion
- •Thick phenotype
- •Single missing maxilary anterior (FDI #15-25 position) tooth replaced with osseointegrated bone level impant
- •Correctly formed soft tissue with CAD/CAM temporary abutment for min. 3 months
- •Neighbouring teeth in place and in good condition
- •Patient voluntarily accepts and signs the patient leaflets for the trial
排除标准
- •Active periodontitis
- •Peri-implant inflammation
结局指标
主要结局
3D RMS - root mean square difference
时间窗: at impression taking, 0,2,10,20 mins
The absolute mean deviation between the emergence profiles replicated with different impression techniques along the whole surface of the EP
次要结局
- Linear vertical soft tissue change(at impression taking, 0,2,10,20 mins)
- Linear horizontal soft tissue change(at impression taking, 0,2,10,20 mins)
- 2D RMS - root mean square difference(at impression taking, 0,2,10,20 mins)
- Patient reported outome measures - evaluation of the impression method(at the end of each session of the digital and conventional impression taking)