Aoralscan part 3

Overview of Same Day Dentistry

  • Revolutionizes dental practices, especially for multiple crown or bridge units.

  • Leverages technology for efficiency and cost savings.

  • Utilizes intraoral scanners, CAD software, milling machines, and 3D printers.

  • Provides single-visit restorations that are accurate and durable.

In-House Dentistry Experience

  • Over 15 years of experience with in-house restorations.

  • Initial learning curve, but the results justify the investment.

  • Ability to provide ceramic restorations in approximately 2 hours.

Workflow Demonstration Using ARL Scan 3

  • Introduction to ARL Scan 3 Intraoral Scanner

    • Demonstrates how to scan a case efficiently.

    • Digital impression files can be exported for restoration design.

  • Exporting Digital Impressions

    • AR Scan Free software allows export in multiple file formats (STL, PLY, OBJ, EXOCAD).

    • Recommended to use both STL and PLY for compatibility.

Using exocad for CAD Design

  • Case Setup and Indications

    • Input necessary patient and case information.

    • Import scans; using PLY for better color definition of margins.

  • Margin Line Placement

    • Define the edge of the restoration meticulously.

    • Clear margins facilitate design and ensure proper fit.

    • Modern ceramics (lithium disilicate) allow flexibility in margin placement.

  • Soft Tissue Management

    • Importance of controlling soft tissue for effective scanning.

    • Use of retraction cord aids in margin visibility.

    • Offers an online course for efficient soft tissue retraction techniques.

Design Process in CAD Software

  • Insertion Direction

    • Specifies how the restoration will be seated.

    • Minimize undercuts to maintain restoration integrity.

  • Generating Restoration Specifications

    • The software creates intaglio surface, cement gap, and minimum thickness parameters, typically default settings.

  • Tooth Design Process

    • Choose a tooth from the design library based on patient needs.

    • Adjust size, position, and aesthetic appearance to fit the arch.

  • Tips for Effective Design

    • Ensure restoration width is appropriate from frontal view.

    • Match marginal ridge heights with adjacent teeth.

    • Modify cusp positions for natural appearance.

    • Ensure proper interproximal contacts and occlusion.

    • Confirm restoration maintains minimum thickness of material to ensure durability.

  • Final Check Before Manufacturing

    • Review the final design from various angles.

    • Make necessary adjustments before proceeding.

Manufacturing the Restoration

  • Select the appropriate block or disk of material.

  • Nest the design with careful placement around critical areas.

  • Send to CAM software for milling.

  • Time Efficiency

    • Entire design process should take around 10-20 minutes.

    • Including milling and glazing, a crown can take about 1 hour to complete.

Learning Opportunities

  • Additional courses available for those interested in CAD CAM design and processing.

  • Encouragement to reach out with questions about the process.