Publications by authors named "Thomas Denneulin"
Purpose: To determine the effect of scanning protocol, number of implants, and implant splinting on the accuracy of digital scanning in the edentulous arch.
Materials And Methods: A resin-based model of an edentulous mandible with six implants was scanned with a coordinate measurement machine as a reference and then with two intraoral scanner (IOS) systems (Trios 3 and Primescan). Ten scans were taken per IOS for three experiments, and each scan was compared to the reference data to evaluate trueness and precision.
Article Synopsis
- A study was conducted to see how different concentrations of sodium carbonate (Na₂CO₃) affect the adhesion between two layers of irreversible hydrocolloid impression material.
- The researchers tested three different concentrations of Na₂CO₃ (0.1, 0.7, or 7.0 wt.%), plus a control group without Na₂CO₃, and analyzed the adhesion strength and failure modes using traction tests.
- Results showed that the 0.7% Na₂CO₃ concentration significantly enhanced bond strength and adhesion energy compared to the other groups, and only cohesive failures occurred at this concentration, indicating better quality in dental impressions.