A device for determination of a plane ensuring parallel preparation

Area of Science:

• Dental prosthetics
• Biomaterials science
• Clinical dentistry

Background:

• Achieving parallel preparation for multiple dental abutments with varying tilts presents a significant clinical challenge.
• Accurate guidance of preparation instruments is crucial for predictable outcomes in fixed prosthodontics.
• The concept of a "working preparation plane" is essential for individualizing the preparation direction.

Purpose of the Study:

• To introduce and evaluate a novel device for the orientation and fixation of an individual direction for parallel tooth preparation.
• To simplify the complex clinical task of preparing multiple teeth with different tilts in a parallel manner.

Main Methods:

• A new device was developed for determining the working preparation plane.
• The methodology was applied to prepare 47 bridge abutments.
• Working models underwent control and comparative analysis using a laboratory parallelometer.

Main Results:

• The developed device successfully determined the working preparation plane.
• The methodology facilitated the fixation of an intraoral parallelometer.
• Control analysis showed no statistically significant differences in achieved parallelism.

Conclusions:

• The device effectively determines the working preparation plane for dental restorations.
• It aids in controlling the parallelism between the surfaces of dental stumps.
• This innovation enhances the precision of preparing multiple bridge abutments.