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Soft tissue-preserving computer-aided impression: a novel concept using ultrasonic 3D-scanning.

Thorsten Vollborn, Daniel Habor, Fabrice Chuembou Pekam

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    Summary

    A novel ultrasound technology offers non-invasive digital impressions for dental prostheses, eliminating the need for clean and dry surfaces. This advancement improves patient comfort and streamlines the CAD/CAM process.

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    Area of Science:

    • Biomedical Engineering
    • Dental Technology
    • Medical Imaging

    Background:

    • Subgingival preparations in dentistry are challenging for traditional impression techniques due to blood and saliva interference.
    • Current intraoral digital scanning relies on optical principles, requiring clean and dry oral surfaces.
    • Existing ultrasound devices lack the necessary resolution and precision for intraoral scanning applications.

    Purpose of the Study:

    • To develop a novel ultrasound technology for soft tissue-preserving digital impressions.
    • To enable CAD/CAM-based production of dental prostheses using ultrasound imaging.
    • To present the concept, development, and integration of this new technology into the dental workflow.

    Main Methods:

    • Development of a high-resolution ultrasound technique specifically designed for intraoral scanning.
    • Creation of a corresponding intraoral scanning system utilizing ultrasound waves.
    • Integration of the ultrasound scanning system into the existing CAD/CAM process chain.

    Main Results:

    • Ultrasonic waves can penetrate gingiva, saliva, and blood, negating the need for oral cavity cleaning and drying.
    • Ultrasound facilitates non-invasive detection of subgingival structures, reducing infection risk and treatment time.
    • The developed technology enables precise, soft tissue-preserving digital impressions for dental prostheses.

    Conclusions:

    • Novel ultrasound technology provides a significant advancement over optical scanning for dental impressions.
    • This method enhances patient comfort and safety by avoiding invasive procedures.
    • The integration into CAD/CAM processes offers a streamlined workflow for dental prostheses fabrication.