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Randomized controlled trial comparing direct intraoral digitization and extraoral digitization after impression
The International Journal of Prosthodontics
|January 15, 2015
Summary
Intraoral digitization (ID) shows good accuracy for single teeth but limited suitability for multiple units. This digital dentistry technique
Area of Science:
- Dental technology
- Digital dentistry
- Prosthodontics
Background:
- Accurate digital impressions are crucial for modern restorative dentistry.
- Comparing intraoral digitization (ID) with traditional extraoral digitization (ED) is essential for workflow optimization.
Purpose of the Study:
- To evaluate the accuracy and correspondence between intraoral digitization (ID) and extraoral digitization (ED) of dental impressions.
- To determine the suitability of ID for different types of dental restorations.
Main Methods:
- A randomized controlled trial involving 10 subjects.
- One-stage putty-and-wash impressions followed by intraoral digitization (ID).
- Extraoral digitization (ED) of the resulting casts; alignment of ID datasets to create CAD reference models; calculation of deviations between ID and ED.
Main Results:
- Mean positive deviation of 37.7 µm and mean negative deviation of -48.4 µm per quadrant.
- The intraoral digitization system demonstrated high suitability for single-tooth restorations.
- Limited suitability was observed for the acquisition of small multiple unit restorations.
Conclusions:
- Intraoral digitization is a viable and accurate method for single-tooth restorations.
- Further research and technological advancements are needed to improve ID accuracy for multi-unit restorations.
