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Accuracy of a self-perforating impression tray for dental implants
Juliana Marotti1, Pedro Tortamano2, Tatiana R R N Castilho3
1Doctoral student, Department of Prosthodontics, School of Dentistry, University of São Paulo; Doctoral student, Department of Prosthodontics and Biomaterials, University Hospital RWTH Aachen, Aachen, Germany.
The Journal of Prosthetic Dentistry
|May 3, 2014
Summary
The self-perforating impression tray showed lower accuracy for dental implant impressions compared to conventional open trays. This finding is crucial for improving the precision of implant restorative procedures.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Biomaterials Engineering
Background:
- Conventional open impression trays present challenges in achieving accurate dental implant impressions.
- Precise impression transfer is critical for successful implant-supported restorations.
Purpose of the Study:
- To compare the accuracy of a novel self-perforating impression tray against a conventional open tray for transferring implant impressions.
- To evaluate the dimensional stability and fidelity of impressions made with different tray systems.
Main Methods:
- A mandibular reference model with four implants was fabricated.
- Polyvinyl siloxane impressions were made using both conventional open trays and a self-perforating tray (Miratray Implant).
- Gap measurements at implant sites were analyzed using optical microscopy and statistical tests (2-way ANOVA).
Main Results:
- The self-perforating tray group exhibited significantly higher gap measurements for implants 3 (150 ±84 μm) and 4 (129 ±65 μm) compared to the conventional tray group (73 ±63 μm and 62 ±61 μm, respectively).
- Statistical analysis confirmed a significant difference in accuracy between the two tray systems (P=.019 for implant 3, P=.04 for implant 4).
Conclusions:
- The self-perforating impression tray demonstrated reduced accuracy in transferring implant positions compared to conventional open impression trays.
- These findings suggest that conventional open trays remain a more reliable option for accurate dental implant impressions.
