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4. Usage

4.7 Electronic Meter Reading (EMR)

Accurate measurement cannot be obtained with the root canal conditions shown below.

If the crown is broken and a section of the gingival tissue 
intrudes into the cavity surrounding the canal opening,contact 
between the gingival tissue and the 

fi

 le will result in electrical 

leakage and an accurate measurement cannot be obtained. 
In this case, build up a barrier with cement to insulate the 
gingival tissue.

Broken crown

Cement

If a chemical solution over

fl

 ows from the opening of the root 

canal, an accurate measurement cannot be obtained.
Clean the inside and opening of the canal thoroughly to get 
rid of the chemical solution and then take a measurement.
Hemorrhage should be treated. You can detect the apex more 
reliably after wiping the chemical solution or blood in the root 
canal. Over

fl

 owing liquid should be cleaned thoroughly.

Root Canal with chemical solution over

fl

 owing from

the opening

Clean

The root canal length of the tooth in which the root is absorbed 
due to a lesion or which has incompletely developed root is 
indicated shorter and cannot be accurately measured.

Root Canal with a large apical foramen

If blood over

fl

 ows from the opening of the root canal and 

contacts the gums, this will result in electrical leakage and 
an accurate measurement cannot be obtained.
Wait for bleeding to stop completely. Clean the inside and 
opening of the canal thoroughly to get rid of all blood and 
then take a measurement. 

Root Canal with blood over

fl

 owing from the opening

Clean

Fractured tooth will cause electrical leakage and an accurate 
measurement cannot be obtained.
A branch canal will also cause electrical leakage.

Fractured tooth, Electrical leakage through

a branch canal

The gutta-percha must be completely removed to eliminate 
its insulating e

ff

 ect.

After removing the gutta-percha, pass a small 

fi

 le all the way 

through the apical foramen and then put a little saline in the 
canal, but do not let it over

fl

 ow the canal opening. 

Re-treatment of a root 

fi

 lled with gutta-percha

 Root Canals not Suitable for Electronic Measurement

Содержание Signo T500

Страница 1: ...SignoT500 Root Canal Length Measurement Function Operation Instructions Thinking ahead Focused on life...

Страница 2: ...ing the equipment and pay close attention to warnings and notes Keep this manual in a readily accessible place for quick and easy reference Trademarks and Registered Trademarks The names of companies...

Страница 3: ...g Between Endodontic Mode and EMR Interlock Endodontic Mode 16 4 4 3 Basic Operations 20 4 4 4 Memory Selection 21 4 4 5 Setting Rotational Motions 22 4 4 6 Setting the Number of Rotations 25 4 4 7 Ca...

Страница 4: ...ol 43 5 2 Micromotor 43 5 3 Ultrasonic Scaler 43 5 4 Transport and Storage 43 6 Maintenance and Inspection 44 7 Troubleshooting 45 7 1 Items to be Checked before Requesting Repair 45 7 2 Error Display...

Страница 5: ...traindications Prohibitions and Precautions for Use Safety and Hazard Prevention of Electric Medical Devices then operate the equipment with the utmost caution to prevent either damaging the equipment...

Страница 6: ...floods lightning etc J MORITA TOKYO MFG CORP will stock replacement parts for the product for a period of 10 years after manufacture of the product has been discontinued We will supply these parts and...

Страница 7: ...cause the pacemaker or the Implantable Cardioverter Defibrillator ICD to function abnormally The electro magnetic waves emitted by inverters used for film viewers neon lights etc can interfere with th...

Страница 8: ...6 Accessories File Holder 3 Parts Identification and Accessories Quantity Probe Cord 1 File Holder 3 Contrary Electrode 5 Tester 1 Contrary Electrode Probe Cord...

Страница 9: ...g Reference Numbers p 10 Canal Length Meter Setting of the position of the Flash Bar p 10 Selecting the Beep Alarm Sound Volume p 10 Flash Bar yellow The apex locator is being selected The display swi...

Страница 10: ...ectrode are properly connected to the probe cord That the probe cord is properly plugged into the jack on the shoulder of the chair That all meter indicator bars on the display light up by touching th...

Страница 11: ...heprobecordjackontheshoulderofthechair Check that the meter on the display indicates within three bars above or below 1 The meter may jump when the tester is inserted Wait for about one second until t...

Страница 12: ...ot canal as a reference point to determine the working length 2 REF 1 USER A Specify the position of the Flash Bar using or The position can be set within a range from Apex to 2 The 0 5 reading on the...

Страница 13: ...an accurate measurement cannot be made because of the canal shape unusual cases or poor performance of the equipment Always check the measurement with an X ray Stop using the instrument immediately if...

Страница 14: ...h them with water 2 Clip on the hand file with the file holder 1 Press down the file holder button with your thumb 2 Clip the file holder on the metal shaft of the file in the root canal 3 Release the...

Страница 15: ...reading on the meter indicates a distance of 0 5 to 1 0 mm from the anatomical apex Use this as an estimate to determine the working length which will di er somewhat depending on the individual tooth...

Страница 16: ...ockwise rotation torque rotation counterclockwise rotation Clockwise rotation torque rotation OGP OTR counterclockwise rotation Torque setting p 24 Torque limit Torque limit Trigger torque Meter displ...

Страница 17: ...1 Operation mode Clockwise rotation Clockwise rotation Clockwise rotation Counterclockwise rotation Clockwise rotation OGP OTR Counterclockwise rotation Number of rotations 300 300 500 200 1 000 300 3...

Страница 18: ...eferentially selected The micromotor selection screen normal cutting is displayed UL H Endo USER A 1 1 100 rpm OFF OFF Endo 1 E Endo 1 0Ncm USER A E UL H The micromotor not compatible with root canal...

Страница 19: ...ith root canal length measurement Option Explanation of the micromotor key EMR interlock endodontic mode 5 Press the 10R 1 key to change to the EMR interlock endodontic mode screen Press the 1 1 key t...

Страница 20: ...nts for EMR interlock endodontic mode p 14 Canal Length Meter The meter is indicated on the unit that have a root canal measurement function option The file tip position is indicated during root canal...

Страница 21: ...indicates where the apical action is being operated and where the file tip of the handpiece is positioned Switching between the variable speed constant speed p 27 To the next page Back to previous pag...

Страница 22: ...rotation If the micromotor does not rotate even when stepping on the pedal the micromoter may generate heat and cause burns or low temperature burns Stop stepping on the pedal Pick up the micromotor...

Страница 23: ...timing and AI catch option timing can be set in the chair unit settings You can set them in the user s personal settings for the chair unit Foot control operation Switching Memory Option Press the End...

Страница 24: ...from penetrating into the file or being broken Counterclockwise rotation TR OGP This motion is a combination of clockwise rotation and counterclockwise rotation and works e ectively for creating a gl...

Страница 25: ...fely and e ciently without a ecting the root form to reduce the occurrence of file penetration brakeage ledge or perforation In normal operation the motor continues in clockwise rotation and the opera...

Страница 26: ...e limit value When rotational motion is set to OTR Torque value when operating the OTR function Trigger torque value The above torque values can be set only when the rotational motion is set to torque...

Страница 27: ...e rotational motion is set to clockwise rotation CW torque reverse TR or counterclockwise rotation CCW Increase or decrease the value using or Enter the value and press the Enter key to confirm If the...

Страница 28: ...de Page 1 Change the variable speed ratio to go to the screen to enter the number of rotations 10R 1 interlocking with the root canal length measurement function is indicated if the root canal length...

Страница 29: ...tations is the maximum number of rotations EMR interlock endodontic mode Page 1 Switching is not possible during micromotor operation If the rotational motion is set to torque reverse only constant sp...

Страница 30: ...lternates between clockwise rotation and counterclockwise rotation Perform calibration after a speed down contra angle handpiece for endodontic treatment has been attached to the micromotor When perfo...

Страница 31: ...se the cutting part to heat up Endodontic mode EMR interlock endodontic mode Page 1 Page 1 Switching the Water Flow Timing Water flow can be set for each memory Confirm that the water flow is OFF befo...

Страница 32: ...valves on the underside of the table Turn the valve in the direction of the arrow to increase the water flow volume and air flow volume Three way syringe Fourth circuit Fifth circuit Third circuit Fir...

Страница 33: ...ment by automatically controlling its rotation at a self set position In endodontic mode apical actions are not available 1 1 100 rpm OFF OFF Endo 1 E Endo 1 0Ncm USER A 10R 1 100 rpm OFF OFF Endo 1 E...

Страница 34: ...prevents the micromotor from automatically stopping or rotating counterclockwise so that the operation may continue even after the file reaches the Flash Bar position These functions are available on...

Страница 35: ...p position in the root canal 4 4 10 Setting BeepAlarm Sound Volumes Page 2 Endodontic mode OFF Beep alarm sound OFF Beep alarm sound volume 1 small Beep alarm sound volume 2 large Page 2 EMR interlock...

Страница 36: ...rightness and H high brightness For devices without a light this function is not available light remains o 4 4 11 Setting the Handpiece Light Page 1 Endodontic mode Page 1 EMR interlock endodontic mod...

Страница 37: ...ic Scaler Solfy Option SCALING SOFT AS USER A Page 1 2 USER A Page 2 Switching water flow ON OFF p 38 Setting the handpiece light p 39 Canal Length Meter The meter is indicated on the unit that have a...

Страница 38: ...nic scaler selection screen model with built in apex locator 2 The ultrasonic scaler selection screen is displayed 3 Step on the foot control pedal to start the micromotor and release the pedal to sto...

Страница 39: ...sh Bar position SwitchingtheApicalStopFunction In this setting you can switch vibration ON OFF when the file tip reaches a self set position in the root canal the Flash Bar position Apical stop ON Thi...

Страница 40: ...Foot control operation Switching water flow ON OFF Adjusting Water Flow Adjust the water flow volume using the valves on the underside of the table Turn the valve in the direction of the arrow to inc...

Страница 41: ...nector Never pull or yank on the cord itself Connector Cord 4 5 5 Handpiece Light Setting You can switch the handpiece light ON OFF and change the brightness Page 1 SCALING SOFT AS USER A OFF L H Hand...

Страница 42: ...g Clean The root canal length of the tooth in which the root is absorbed due to a lesion or which has incompletely developed root is indicated shorter and cannot be accurately measured Root Canal with...

Страница 43: ...ival tissue In this case widen the opening at the top of the crown so that the file will not touch the metal prosthesis before taking a measurement Crown or metal prosthesis touching gingival tissue C...

Страница 44: ...the components o in running water with a soft brush And then wipe o the water Cleaning Disinfection Packing Sterilization Be sure to follow the procedure below when performing autoclaving 2 Disinfect...

Страница 45: ...nts Temperature 10 C to 70 C 14 F to 158 F Humidity 10 to 85 without condensatin Atmospheric Pressure 70kPa to 106kPa Avoid frequent or continuous exposure to direct sunlight If the equipment has not...

Страница 46: ...Press the Reference button to make sure it changes from 1 to 2 to 3 etc Check that the probe cord can be properly plugged into its jack on the shoulder of the chair Check that the file holder s plug...

Страница 47: ...rently making a measurement Reference numbers cannot be changed while making a measurement Switch may not be working In this case the switch may be defective Two or more bars on the meter may be blink...

Страница 48: ...a metal prosthesis Touching a metal prosthesis with the file allows a flow of current to the gingival tissue or periodontal pocket and will cause the meter to jump to the Apex Is the tooth surface in...

Страница 49: ...ealer or J MORITA OFFICE for inspection or repair Wire disconnection and circuit board fault Contact your local dealer or J MORITA OFFICE for inspection or repair 7 2 Error Display If the following er...

Страница 50: ...on of the treatment instruments in the root canal is detected Mode of operation Continuous Power supply DC 5 V Power Rating 0 2 W Measurement Voltage AC 80 mV maximum Measurement Current 10 A maximum...

Страница 51: ...U Built in Model may be repaired and serviced by The technicians of J MORITA s subsidiaries all over the world Technicians employed by authorized J MORITA dealers and specially trained by J MORITA In...

Страница 52: ...of J MORITA CORP and J MORITATOKYO MFG CORP As the color of the product is printed it may differ from the actual color Some optional equipment is included Morita Global Site www morita com More Infos...

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