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Precision of multi-frequency electronic apex locators
1School of Dentistry and Oral Health, Griffith University, Gold Coast, Australia.
Evidence-Based Dentistry
|October 22, 2016
Summary
The precision of electronic apex locators (EALs) in root canal treatment varies by device and irrigation method. Pulp status, whether vital or necrotic, did not significantly impact EAL accuracy in locating the apical constriction.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Accurate determination of root canal length is crucial for successful endodontic treatment.
- Electronic apex locators (EALs) are widely used to measure working length, but their precision varies.
Purpose of the Study:
- To evaluate the precision of different electronic apex locators (EALs) in locating the apical constriction (AC) during primary root canal treatment.
- To compare EAL accuracy against histologic evaluation of the AC.
Main Methods:
- Systematic review and meta-analysis of studies comparing EALs with histologic AC evaluation.
- Inclusion of studies reporting EAL precision in human teeth during primary root canal treatment.
- Data extraction and quality assessment by two independent reviewers.
Main Results:
- Ten studies involving 1105 EAL measurements were included; 7 had high risk of bias.
- Root ZX, Justy II, and Endy 5000 demonstrated higher accuracy than Endox.
- Pulp status (vital or necrotic) did not significantly affect EAL precision.
Conclusions:
- The precision of electronic working length measurement is influenced by the specific EAL device and irrigation techniques used.
- Pulp tissue status does not appear to be a significant factor affecting the precision of EALs.
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