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Measurement of accuracy tolerance MedicNRGs Digital Apex Locators ApexNRG-XFR ApexNRG-Blue All measurements performed with a digital micrometer, with no.

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Presentation on theme: "Measurement of accuracy tolerance MedicNRGs Digital Apex Locators ApexNRG-XFR ApexNRG-Blue All measurements performed with a digital micrometer, with no."— Presentation transcript:

1 Measurement of accuracy tolerance MedicNRGs Digital Apex Locators ApexNRG-XFR ApexNRG-Blue All measurements performed with a digital micrometer, with no human intervention Documentation from clinical analysis performed by: Professor Joshua Moshonov, DMD Gregory Berdichevsky, electromechanical engineer DRAFT VERSION Additional information to be processed and added

2 Documentation using a digital camera. Measurement apparatus – Digital Micrometer

3 The measuring apparatus measures the location of the electrode or file in the canal, accurate to the thousandths of a millimeter. This is a unique device in that it is the first time no human error is present in testing the accuracy of an apex locator. The apparatus has a built in digital camera that documents the results of the location of the file and the micrometer results. Adjustment mechanism of the tooth relative to the file. The spatial adjustment is made by: a screw on axis Y; and magnetic surfaces on axis X. In addition, the devices were tested in the full range of tolerance – the lowest point of the range and the highest point of the range before reaching the next point to be measured.

4 The reference point is determined after reading the apex. Proof is found using both x-ray and liquid MetApex in the apical region.

5 The ApexNRG-XFR reads APEX (0.00) upon reaching the apical constriction. apical constriction

6 1 2 3 The measurements with the ApexNRG Blue device received three separate inputs simultaneously in order to fully confirm the results of the reading: 1. Micrometer reading; 2. Device reading; 3. File in canal on screen, with a visual resolution of 0.1 mm. In addition, the grey square on the right side of the screen confirms the change made by the micrometer, in a resolution of 0.1 mm. The resolution on the device itself is 0.25 mm from the Apex – 0.5 mm. From 0.5 mm – 2.0 mm the resolution is only every 0.5 mm. Therefore, when comparing the results with the micrometer, the main comparison should be with the two screen readings as described above.

7 Riding on the device =0.00 ApexNRG-Blue Device reads: APEX (0.00) Micrometer reads: 0.00 mm Deviation: 0.00 ApexNRG-Blue Device reads: APEX (0.00) Micrometer reads: mm Deviation: Measured at the highest point before changing to Actual deviation:

8 ApexNRG-Blue Device reads: 0.25 mm Micrometer reads: mm Deviation: ApexNRG-Blue Screen reads: mm Micrometer reads: mm Deviation: 0.024

9 ApexNRG-Blue Device reads: 0.50 mm Micrometer reads: mm Deviation: ApexNRG-Blue Screen reads: 0.60 mm Micrometer reads: mm Deviation: 0.067

10 ApexNRG-Blue Screen reads: 0.70 mm Micrometer reads: mm Deviation: ApexNRG-Blue Screen reads: 0.80 mm Micrometer reads: mm Deviation: 0.066

11 ApexNRG-Blue Screen reads: 0.90 mm Micrometer reads: mm Deviation: ApexNRG-Blue Device reads: 1.00 mm Micrometer reads: mm Deviation: 0.065

12 ApexNRG-XFR Device reads: APEX (0.00) Micrometer reads: mm Deviation: ApexNRG-XFR Device reads: 0.25 mm Micrometer reads: mm Deviation: 0.028

13 ApexNRG-XFR Device reads: 0.50 mm Micrometer reads: mm Deviation: ApexNRG-XFR Device reads: 0.75 mm Micrometer reads: mm Deviation: 0.024

14 ApexNRG-XFR Device reads: 1.00 mm Micrometer reads: mm Deviation: ApexNRG-XFR Device reads: 1.50 mm Micrometer reads: mm Deviation: 0.155

15 ApexNRG-XFR Device reads: 2.00 mm Micrometer reads: mm Deviation: 0.182

16 Micrometer: 0.0 mm ApexNRG Blue: 0.0 mm Micrometer: mm ApexNRG Blue : 1.5 mm Micrometer: mm ApexNRG Blue : Past Apex


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