Related Experiment Videos
[Comparisons of meter reading values in 5 electronic measuring devices]
K Shinoda1, T Hoji, M Nakashima
1Department of Endodontics, Asahi University School of Dentistry.
Summary
This study compared electronic apex locator (EAL) readings to manufacturer specifications. Most EALs showed lower root apex measurements than stated, especially in vital teeth.
Area of Science:
- Endodontics
- Dental Technology
- Diagnostic Devices
Background:
- Accurate electronic apex locator (EAL) measurements are crucial for effective root canal treatment.
- Manufacturer-provided root apex values may not always reflect actual device performance.
- Variability in EAL readings can impact procedural success and patient outcomes.
Purpose of the Study:
- To compare the root apex values provided by manufacturers with actual measurements from five electronic measuring devices.
- To evaluate the accuracy of EALs in different clinical scenarios, including experimental models and vital/pulpless teeth.
Main Methods:
- Five electronic measuring devices were tested.
- Measurements were taken using an experimental tooth model with the file tip at the apical constriction.
- Readings were also obtained from vital and pulpless teeth with the file tip between 0 mm and -2.0 mm from the root apex.
Main Results:
- In the experimental model, most devices (except EM) recorded lower values than manufacturer specifications.
- For vital teeth, EM-S II and EM showed readings similar to manufacturer values, unlike other devices.
- Pulpless teeth measurements consistently yielded lower values than those stated in manufacturer introductions across all devices.
Conclusions:
- Electronic apex locators may not consistently achieve the root apex values specified by manufacturers.
- Device accuracy varies depending on the clinical condition (vital vs. pulpless teeth) and specific EAL model.
- Further investigation is needed to understand discrepancies and ensure reliable EAL performance in endodontic procedures.