Operating Manual
Contents
1. Warning The Digital Apex Locator should NOT be used on a patient with a pacemaker2. Locator by pressing the ON button on the face of the unit or by making contact between the lip hook and the mini file holder pic J Once activated the LEDs will flash in sequence as a self check 2 Following this check the green LED will blink indicating the Digital Apex Locator is in stand by mode 3 When the file reaches the 2 00 mm point the green LED will stay lit 4 Work the file towards the apex in a clockwise and counter clockwise circular fashion until the 0 50 mm orange LED turns on and the alarm sounds slow pitch NOTE In order to gain the maximum advantage of this advanced DSP technology the file must be manipulated in slow movements towards the apical constriction 0 0 in clockwise and counterclockwise motions This is due to the extremely high accuracy and rapidity of measurement of each minute movement of the file This is especially important in the critical area between 0 5 to the apical constriction 0 0 Swift movement of the file may cause an unsteady LED display pic J 5 Before reaching the biological apex you will reach the 0 25 mm and the orange LED will light 6 When the file reaches the biological apex the Apex red LED will light and the alarm sound changes to a faster pitch Device Power Off As an energy conservation feature the Digital Apex Locator will turn off after approximately 90 seconds of inactivity Battery Power When the Digital Apex L
3. 1 Main lead wires 2 Mini file holder 3 Lip hook 4 Apron clasp 5 On Button 6 Flashing LEDs 1 1 2 3 4 5 6 Apex NRGXFR TM Xtra Fine Resolution Digital Apex Locator The Digital Apex Locator is designed to meet international safety and performance standards Personnel operating the instrument must have a thorough understanding of the proper operation of the instrument These instructions have been prepared to aid medical and technical personnel to understand and operate the instrument Do not operate the instrument before reading this manual and gaining a clear understanding of the operation of the instrument If any part of this manual is not clear please contact your representative for clarification The Digital Apex Locator calculates the distance from the tip of your endodontic file to the foramen by measuring the signals between two electrodes The first electrode is the lip hook The second is the mini file holder which makes contact with a file or plugger that has been inserted into the root canal Technological advantages for precision There are 8 LEDs to mark the advancement of the file for maximal control of the measurement and precision The Digital Apex Locator is able to filter out most momentary contact with amalgam or metal fillings The Digital Apex Locator provides precise measurements of the canal under all conditions including wet dry and bleeding canals Yo
4. Recommendations for the measurement process Prepare a wide canal oroficium and prepare the first 2 3 in a tapered way to prevent contact with premature constrictions in the canal Insert the file while rotating it clockwise and counter clockwise and then part way back Rotation of the file in one direction may cause the file to break inside the canal Take care to ensure continuous contact between the file and the root canal wall It is recommended to use the thickest possible file that will reach the estimated working length A loose file that does not make continuous contact with the canal wall will be unable to perform accurate measurements Ensure continuous and strong contact between the file and its holder this may be problematic with the thinner files 6 8 10 mm In excessively desiccated canals moistening is recommended to improve conductivity This can be effected by slight irrigation and or by slight lubrication of the file with CANAL If the canal is too dry introduce NaOCl to the apical of the canal Exceptions In a very wide canal the Digital Apex Locator may be able to read the measurement only at the tip where the canal constricts toward the apical tissue In such cases only a depth of 0 5 mm and apical foramen will be identified Reading may be improved by using a thicker file and pressing it against the canal wall The apex locator reading may be unstable in these tooth pathology situat
5. d be made increasingly often when approaching the biological apex in order to prevent perforation The location of the file will be shown on the apex locator only during direct contact with the sensor probe Prior to measuring root canal length with your Digital Apex Locator Make sure that the pulp chamber 1 is clean and dry before Inserting the measuring file It is recommended to dry the pulp chamber with a cotton pellet or by a slight aspiration of the moisture from the root canal as well with an aspiration syringe Also ensure that all canals are isolated from each other Dry the canal with a paper point to increase accuracy when excessive conductive fluids form a conductive bridge between canals or with a metallic restoration or crown When the walls of the pulp chamber are damaged 2 saliva leakage can occur from the oral cavity which will prevent drying of the chamber A moist chamber will cause the immediate formation of a closed electrical circuit i e a short circuit In this event the apex locator will issue a warning red light as if it reached the apex In such cases the damaged chamber wall should be permanently or temporarily restored but only with non conductive materials such as Composite IRM GI glass iononer etc After restoration an absolutely dry chamber can be achieved and accurate measurement effected Check that any damaged fillings 3 have been removed in order to prevent marginal leakage Such l
6. d slows its pitch Please refer to our recommendations for a successful treatment page 8 and our trouble shooting guide page 10 for more information pic K pic L pic M Sterilization Warning Do not place the Digital Apex Locator into the Autoclave Do not submerge the device or allow liquid to enter the unit enclosure Attention The Digital Apex Locator and its accessories are not supplied in a sterile state All surfaces of the device and its accessories should be disinfected when the unit is initially received and thereafter between procedures to prevent cross infection Wipe the surface of the unit with a clean cloth moistened in 70 ethyl alcohol solution The main lead wires 1 mini file holder 2 lip hook 3 and apron clasp 4 can be sterilized in the autoclave at 121 C for 20 minutes or at 134 C for 5 minutes Only accessories specifically mentioned as autoclave safe may be sterilized in the autoclave Note When storing the Digital Apex Locator for a long period without use it is recommended to remove the battery from the device in order to lengthen the battery life For your convenience After the length of the canal has been defined and marked on all of the files the compact and convenient Sensor Probe can be used to confirm the depth of the entering file during the procedure The result of the momentary contact with the file will be shown on your apex locator immediately Please note Contact shoul
7. eakage will result in a moist working area and may interfere with the Digital Apex Locator s reading The red light will flash indicating that it has identified the apex when in fact the file is only at the canal entrance area Most momentary contact with metal or amalgam fillings will be filtered out by the Digital Apex Locator However continuous contact will ground the device so take special care to prevent contact between the file and any existing metal based restoration of the tooth by amalgam filing or crown In such instances an adequate insulation of the file from the metallic environment can be achieved by fitting 2 3 rubber stoppers onto the part of the file that may contact the metal of the restoration In addition to ensure that the chamber is dry and insulated take care to remove most soft tissue from the root canal by extirpation before measuring Residual tissue may result in a premature and erroneous reading When using a rubber dam make sure that It provides a proper seal of the insertion area Any aperture between the rubber dam and tooth can be sealed with a temporary restoration Cimpat Recommendations for a successful treatment 1 2 3 4 Ensure the lip hook fully contacts the patient s moist mucosa Check all connections While some of the accessories are autoclave safe if any accessory seems damaged after a number of autoclave cycles please replace with a new part
8. following points A The battery has been placed upside down B The battery was not fresh Please ensure you are replacing with a new battery C Please make sure you are using a CR2450 type battery Question Unit shows that the file is at the apex when instrument has only just been introduced to the canal Reading on unit is not steady No lights show 3 LEDs illuminate simultaneously The reading on the device does not coincide with the result of the X ray The unit will not switch off Unit does not work when battery has been replaced Included in box Digital Apex Locator 1 unit Lead Wires 4 units autoclave safe Apron Clasp 2 units autoclave safe Traditional File Clip autoclave safe Mini File Holder 3 units autoclave safe Disposable Sleeves 20 units Battery type CR2450 Lip Hook 2 units Accessories In order to facilitate your operating area MedicNRG has developed a wide range of accessories that are fully compatible with the Digital Apex Locator Mini Sensor Probe autoclave safe included Long Sensor Probe autoclave safe Classification Type BF applied part IEC 601 1 Compliant Medical Equipment Technical Specifications Power Supply Single CR2450 battery Power input 2 4 3 0 V Maximum current 12mA Operating temperature 10 C 40 C Humidity 10 90 without condensation
9. ions decay caries strong bleeding in the canal metallic restoration peri apical lesion open apex 4 excessively wide canal Bone or periodontal ligament loss indicated by a radiolucency on the film can cause inaccurate readings A worn out battery will reduce the accuracy of the reading The battery should be replaced as soon as the instrument s warning signal appears as detailed in the user manual Take care to follow the instructions for connecting the cables to the instrument as specified in the user manual Troubleshooting Solution Either pulp chamber floor is not completely dry or the file has contacted a metallic restoration In either case the inaccurate readings are due to shorting the circuit Dry the pulp chamber if it is wet File is in intermittent contact with the canal walls Either place a curve at the tip of the file or try a larger size file so the tip touches the wall near the apex Battery is flat or has not been replaced correctly see below Warning to replace battery as soon as possible The x ray is a two dimensional image which cannot accurately find the biological apex Therefore the result of the apex locator should be relied upon for determining the correct working length In addition bone or periodontal ligament loss indicated by a radiolucency on the film can cause inaccurate readings Battery is low Replace battery Please check each of the
10. ocator recognizes low battery power upon turning on the unit three intermittent LED lights will simultaneously along with beeping sounds This is a warning to change the battery soon still functional If after an additional period of time the operator has not changed the battery the unit will turn off automatically upon being turned on and will not allow the operator to use the unit Replace the battery immediately There are no other user serviceable items within the unit Warning Low battery power affects accuracy Battery Replacement Turn over the device so the back side is facing you Remove the battery by gently pulling out the battery drawer at the bottom of the Digital Apex Locator pic K Remove the battery from the drawer pic L and replace with a fresh battery type CR2450 Be sure to insert the battery with the sign facing upwards to the rear of the device pic M Slide the drawer back into the battery housing with the sign to the REAR of the device Dispose of depleted battery in accordance to local regulations 7 Mark the depth of the canal with the file rubber stop Measure the length of the ile and prepare the rest of the files for the treatment according to this length If you pass the biological apex the 0 0 mm red LED will begin to flash and the alarm will sound fastest pitch At this stage gently pull file back out of the canal until the Apex mm red LED lights and the alarm soun
11. u can immediately measure another canal without any special preparations Calibration is automatic NO manual calibration is required pic H pic I Initial Setup 1 Insert the two main lead wires into the outlets at the top of the Digital Apex Locator Pic B 2 Insert the file clip and lip hook into the sockets located at the end of the main plug cable either left or right Pic C D 3 Attach the apron clasp to the lead wires by inserting them into the two wire holders on the clasp handles Pic E 4 Insert the Digital Apex Locator into a disposable sleeve Pic F 5 Place the Digital Apex Locator near the mouth of the patient and attach the clasp to the apron Pic G 6 Place the lip hook located at the end of the cable to the lower lip preferably on the opposite side of the tooth being treated 7 Place the file at the entrance to the canal pic H and then connect it to the mini file holder located at the end of the file clip cable pic I The Digital Apex Locator is now ready for operation pic B pic C pic D pic E pic G pic F Directions For Use NOTE The Digital Apex Locator should be used only as an adjunct to normal endodontic procedures While the unit can reduce the number of radiographs necessary an initial radiograph must be taken to estimate working length Clinical judgment including knowledge of root canal anatomy is paramount when interpreting results 1 Activate the Digital Apex
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