Właściwości kształtujące narzędzi ProTaper Universal, WaveOne i ProTaper Next w sztucznie wytworzonych kanałach korzeniowych w kształcie liter L i S

Image processing

A retainer platform for fixing a camera (Canon EOS 50D, Canon Incorporated, Tokyo, Japan) and resin blocks was made in order to take photographs pre- and postinstrumentation at the same position. Before instrumentation, black dye (Winsor & Newton, Colart Tianjin Art Materials, Tianjin, China) was filled into canals and then photographs were taken to record the shapes of original canals; after instrumentation, red dye (Winsor & Newton) was filled into canals to record the shapes of enlarged ones. When taking photographs, a file with silicon stopper was inserted into the canals as a marker. These photographs were then processed through software as follows:

1. All the photographs were inputted into software Adobe Photoshop CS6 (Adobe System, San José, CA, USA). And then they were desaturated and saved as JPEG format (Figures 1 and 2, stage 1A and stage 1B).
2. The desaturated images were inputted into software Able Software R2V for Windows (Able Software, Lexington, USA) in order to converse these images into vector ones of DXF format, which facilitated accurate calculations (Figures 1 and 2, stage 2A and stage 2B).
3. The DXF images were inputted into software CAXA (CAXA Technology, Peking, China). With the help of CAXA, the outline of canals could easily be described. Moreover, the central axis of canals was acquired.
4. The images of original canals and enlarged ones were superimposed into one picture with the aid of software [...]

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