Accuracy of Complete-Arch Implant Photogrammetry
Accuracy of Complete-arch Implant Scans Obtained Using Intraoral Photogrammetry and a Mobile-phone Based Photogrammetry.
研究概览
详细说明
Accurate recording of implant positions is essential for the passive fit and long-term success of complete-arch implant-supported prostheses. Photogrammetry-based technologies have emerged as promising alternatives to conventional digital impression techniques for capturing implant positions with high accuracy. While intraoral photogrammetry systems have demonstrated favorable results, the clinical performance of recently introduced mobile-phone-based photogrammetry systems remains insufficiently investigated.
This prospective comparative clinical study aims to evaluate the accuracy and chairside time of complete-arch implant scans obtained using an intraoral photogrammetry system and a mobile-phone-based photogrammetry system in edentulous patients restored with complete-arch implant-supported prostheses. Each participant will undergo implant scanning using both systems according to the manufacturers' recommendations. The resulting digital datasets will be compared with a reference dataset to determine scan accuracy.
The primary outcome measures will be linear and angular discrepancies between the implant positions captured by each photogrammetry system and the reference dataset. Secondary outcome measures will include the chairside time required for scan acquisition. Statistical analyses will be performed to compare the accuracy and efficiency of the evaluated systems.
研究类型
注册 (实际的)
联系人和位置
学习地点
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Menoufia
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Shibīn al Kawm、Menoufia、埃及、2266166
- Mohammed El-Sawy
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参与标准
资格标准
适合学习的年龄
- 成人
接受健康志愿者
取样方法
研究人群
描述
Inclusion Criteria:
- Adults aged 18 years or older.
- Completely edentulous patients rehabilitated with implant-supported complete-arch prostheses.
- Presence of at least four osseointegrated implants in the edentulous arch.
- Patients able to undergo digital implant scanning procedures.
- Patients willing to participate and provide written informed consent.
Exclusion Criteria:
- Patients with unstable or failed implants.
- Presence of peri-implant disease, active oral infection, or significant soft-tissue inflammation around the implants.
- Inadequate access for placement of photogrammetry scan bodies or markers.
- Patients with conditions that prevent proper scanning procedures (e.g., inability to maintain mouth opening or remain still during data acquisition).
- Patients requiring immediate implant placement or immediate loading protocols.
- Patients unwilling or unable to provide informed consent.
- Incomplete clinical records or inability to complete all study procedures.
学习计划
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
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Intraoral Photogrammetry (IPG)
Participants will undergo complete-arch implant scanning using an intraoral photogrammetry system (IPF Elite, Shining 3D).
Implant positions will be digitally recorded according to the manufacturer's instructions.
Linear and angular discrepancies relative to the reference dataset, as well as chairside scanning time, will be evaluated.
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A photogrammetry-based digital impression system used to capture the three-dimensional positions of implants in complete-arch rehabilitations.
The system records implant locations through specialized scan bodies and generates a digital dataset for subsequent accuracy analysis.
其他名称：
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Mobile-Phone-Based Photogrammetry
Participants will undergo complete-arch implant scanning using a mobile-phone-based photogrammetry system (T-Marker).
Implant positions will be digitally recorded according to the manufacturer's instructions.
Linear and angular discrepancies relative to the reference dataset, as well as chairside scanning time, will be evaluated.
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A smartphone-assisted photogrammetry system used to capture the three-dimensional positions of implants in complete-arch rehabilitations.
The system acquires photographic data through coded markers and generates a digital dataset for subsequent accuracy analysis.
其他名称：
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Linear Discrepancy of Complete-Arch Implant Scans
大体时间：Immediately after scan acquisition and digital analysis (same study visit).
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Assessment of the linear deviation (μm) between implant positions captured using intraoral photogrammetry and mobile-phone-based photogrammetry systems and those recorded in the reference dataset.
Lower values indicate greater accuracy.
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Immediately after scan acquisition and digital analysis (same study visit).
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合作者和调查者
调查人员
- 首席研究员：Mohammed A. El-Sawy, PhD、Menoufia University
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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