A device for determination of a plane ensuring parallel preparation
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Updated: Aug 22, 2026

Precision Measurements and Parametric Models of Vertebral Endplates
Published on: September 17, 2019
1Department of Prosthetic Dentistry, Faculty of Dentistry, Higher Medical Institute, Plovdiv, Bulgaria.
Purpose:
Parallel preparation of a greater number of teeth with a different tilt is a difficult clinical task. For precise guidance of the preparation instruments with a fixed individual tilt it is necessary to determine the "working preparation plane". A device for orientation and fixation of an individual direction for parallel preparation is created.
Methodology:
We have prepared 47 bridge abutments using our methodology. The working models are subjected to control and comparative analysis with a precise laboratory parallelometer. The reported results do not show differences requiring statistical analysis.
Discussion:
The device serves to determine the working preparation plane. It promotes the fixing of an intraoral parallelometer that controls the achieved parallelism between the homonymous surfaces of dental stumps.
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