History and uses of electronic apex locators - Original electronic apex locators operated on the direct current principle. - Conductive fluids in the canal could cause false readings. - Newer devices are impedance-based, using alternating current of two frequencies. - Impedance type apex locators are less affected by fluid conductive media. - Impedance type apex locators are 80 to 95% accurate in identifying the apical foramen.

Adaptive Apex Locators - Adaptive Apex Locator overcomes the disadvantages of 4th generation apex locators. - 5th generation locators can experience difficulty in dry canals. - Adaptive Apex Locator continuously defines humidity of the canal. - It can measure in dry and wet canals, canals with blood or exudates, and canals with still not-extirpated pulp.

Related information - Apex location

References - https://www.oraljournal.com/pdf/2020/vol6issue2/PartH/6-2-56-998.pdf

Categories - Dental equipment - Dentistry - Dentistry stubs - Medical equipment stubs