Tooth Phantom Test

Tooth Phantom Test

Date Completed: ______

Performed By: ______

Specifications Tested

Engr. Spec. # / Specification (description) / Unit of Measure / Marginal Value / Comments/Status
3.2 / The tooth phantom shall be able to be quickly replaced within the phantom holding fixture. / min / 10 / Teeth will not be permanently fixed in place. Table will support multiple teeth of various measures. Interface between teeth and turn table is the driver of the time required for replacement.
3.3 / The tooth phantom geometry shall allow for quick alterations of the physical relationship between the tooth and the gums. / mm / +/-0.1 / Use of multiple teeth is substitution for this specification. To be measured manually and ultrasonically.
3.4 / The tooth phantom materials shall allow for ultrasonic detection of material boundaries. / Pass/Fail / Pass / Should be able to see different outputs for each material.

Revision History

Revision / Description / Date
1 / Document created

Equipment

Fully assembled test fixture (motors & tooth phantoms attached)

Allen Wrenches 3/32” and 3/16”

Stop watch

Pulser/receiver

Oscilloscope

Ultrasonic probe

Coupling agent

Sections

• Part I:Replaceability of tooth phantom
• Part II: Measurement of tooth phantom geometries
• Part III: Determination of material boundaries

Part I:Replaceability of Tooth Phantom

Date Completed: ______

Performed By: ______

Note: Test to be performed for one tooth phantom at a time.

____ 1.Record the number of the tooth socket being tested (1-4).

____ 2.Begin the timer (stop watch).

____ 3. Using a 3/16” allen wrench, remove the top nut from the turn table.

____ 4. Remove the turn table from the fixture.

____ 5. Using the 3/32” allen wrench to loosen one (1) bolt on the top face of the mounting plate while holding the nut finger tight.

____ 6. Remove the nut from the boltthen remove the bolt from the assembly.

____ 7. Repeat steps 5 and 6 for the second bolt on the mounting plate.

____ 8. Carefully remove the mounting plate from the turn table, ensuring that the phantom remains intact.

____ 9. Align the replacement tooth phantom and mounting plate assembly with the bolt pattern on the turn table.

____ 10. Carefully place a bolt through the first hole in the mounting plate.

____ 11. Fasten a nut to the bolt from the bottom of the mounting plate to “finger tight”. Ensure that the tooth phantom and mounting plate do not rotate but remain aligned with the bolt pattern on the turn table.

____ 12. Repeat steps 10 and 11 for the second hole on the mounting plate.

____ 13. Using the 3/32” allen wrench tighten the bolt while holding the nut finger tight.

____ 14. Place the turn table back in position over the center rod of the fixture.

____ 15. Place the bolt back in and tighten using the 3/16” allen wrench.

____ 16. Stop the timer (stop watch) and record the replacement time. Replacement time should be less than ten minutes ( < 10 min) for a “pass”. Determine if the tooth passes/fails then initial and date.

Results
Tooth Phantom (1-4) / Replacement Time (min) / Requirement (min) / Tooth Replaceable (Pass/Fail) / Initial / Date
< 10 / /
< 10 / /
< 10 / /
< 10 / /

Sign off on section completion before continuing:______

Part II: Measurement of tooth phantom geometries

Date Completed: ______

Performed By: ______

____ 1.Measure height of tooth from base plate to top of concrete.

____ 2.Width and depth is determinded by aluminum tube to be constant make sure there is no overhang by concrete.

Summarize data below

Tooth # / Tooth Dimensions

Sign off on section completion before continuing:______

Part III: Determination of material boundaries

Date Completed: ______

Performed By: ______

____ 1. Record the number of the tooth socket being tested (1-4).

____ 2. Ensure that the proper connector is plugged into the ultrasonic probe.

____ 3. Plug the probe connector into the T/R port on the pulser receiver.

____ 3. Turn on the oscilloscope and the pulser/receiver.

____ 4.Open the following file from SVN: ..\..\Source Code\dpr35\dpr35 Front Panel.vi.

____ 5.Ensure that the VISA resource name reflects the appropriate COM port. The receiver switch should read “echo”, high pass filter should read “DC”, low pass filter should read “10/15 MHz”, trigger switch should read “internal” and pulser impedance should read “high z”.

____ 6.Ensure that the equipment is hooked up properly (i.e. the probe is connected to the T/R port on the pulser and proper cords are attached to the pulser and oscilloscope).

____ 7. Flip the switch on the front panel VI to “on” and run the program.

____ 8. Place a drop of coupling agent on the tooth phantom to be tested.

____ 9. Place ultrasound tip onto tooth phantom and take a screen capture for each material.

____ 10. Compare materials to make sure there is a noticeable difference when switching between concrete and aluminum.

____ 11. Save screen captures of the ociloscope.

Sign off on the section ______

Sign off on completed test ______

RIT KGCOE MSD Program Page 1