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Periodontal Measurement Test System

Periodontal Measurement Test System. P13061 Project Review. Team P13061. Ray Boronczyk (ME), Evan Lammertse (ME), Sam Remp (EE), Yokai Ro (EE), Ryan Shaw (ME), Kristi Weaver (ME). Problem Statement.

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Periodontal Measurement Test System

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  1. Periodontal Measurement Test System P13061 Project Review

  2. Team P13061 Ray Boronczyk (ME), Evan Lammertse (ME), Sam Remp (EE), Yokai Ro (EE), Ryan Shaw (ME), Kristi Weaver (ME)

  3. Problem Statement Periodontal disease affects over 50% of adults worldwide and is the leading cause of tooth loss. The current method for performing the sulcus depth measurement is a painful, inconsistent and lengthy process.

  4. Current Method

  5. Long Term Goal Develop a new method that is more consistent, less painful and less time consuming. Ultrasonic transducer

  6. 1st Generation Develop a test fixture to validate the use of an ultrasonic transducer to perform the sulcus depth measurement. • Tooth phantom • Test Fixture • Automated program

  7. Original Customer Needs

  8. Phantom Material Research • Relevant properties: acoustic impedance, density, speed of sound • Initial material selection: • Bone: brick • Dentin: concrete • Soft tissue: paraffin, polyurethane • Revised material selection: • Bone: aluminum • Soft tissue: rubber, fabric paint

  9. Phantom Design

  10. Mechanical- System Needs • Hold tooth phantom and transducer • Move through 5 axes • Accuracy to +/- 0.1mm and +/- 1 deg • Portable

  11. Mechanical

  12. 3 Linear Axes • Lead Screws • Anti-Backlash Nuts • Ball Bearings • Couplings

  13. Rotational Axes • Servo’s • Linear Bearings

  14. Challenges Faced • Misalignment • Machining quality • Positive location • Time • Miscommunication during manufacturing • Probe Holder • Spring mechanism

  15. Electrical System Description Programming Flowchart • Arduino UNO development board directly controlling 2 servo motors and indirectly controlling 3 stepper motors through EasyDriverMicroStep controllers. • Arduino analog to voltage converter interprets linear position of the stepper motors. • Programmatically captures data from the Oscilloscope then compares and logs it.

  16. Adapted Customer Needs

  17. Phantom Test Results

  18. Mechanical Test Results

  19. Linear Axes • All within spec

  20. Rotational Axes • Turn Table • Factor of two • Pitch Axis Possible Problems • Motor size/capability • Motor mount • Coupling

  21. Electrical Test Results

  22. Future Work • Ultrasonic transducer: • Higher frequency • Different type? • Phantom materials: baseline research • Representative sulcus

  23. Future Work Cont’d • Servo motors: mounting change (reduce angular torque) • Stepper motors: • Positional feedback system • Larger power supply • Wire harnesses

  24. Acknowledgements • Dr. Brown – RIT • Dr. Caton – U of R • Neal Eckhaus – faculty guide • Dr. Helguera – RIT • Professor Landschoot – RIT • Dr. Stephen McAleavy – U of R • Dr. Phillipps – RIT • Dr. Rosenblum – customer • RIT Machine Shop

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