Accuracy of ERCLMDs in Teeth With Apical Periodontitis

Influence of Apical Periodontitis on the Accuracy of Three Electronic Root Canal Length Measurement Devices: An In Vivo Study

Status

Completed

Phases

Phase 1

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01904552

Acronym

ERCLMDs

Enrollment

Registered

2013-07-22

Start date

2012-09-30

Completion date

2013-04-30

Last updated

2013-07-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Apical Periodontitis

Keywords

Apical periodontitis, Dentaport ZX, electronic apex locators, i-Root, Raypex 5, working length

Brief summary

The aim of this in vivo study is to evaluate the influence of apical periodontitis (AP) on the accuracy of Dentaport ZX, Raypex 5, and i-Root electronic root canal length measurement devices.

Detailed description

Thirty-two single-rooted teeth scheduled for extraction, consisting of 16 teeth with AP and 16 teeth with normal periapex (NP), were selected. Access cavity was prepared and coronal portion of the canal was flared. Electronic working length (EWL) was determined by each ERCLMD according to each manufacturer's instructions. Each tooth was extracted and actual working length (AWL) was determined by inserting a size 15 K-file until the tip could be seen at a position tangential to the major foramen and then 0.5 mm was subtracted from the measurement. The distance from the AWL to the file tip was calculated and compared between the two groups by t-test. The accuracy of each ERCLMD within ±0.5 mm was compared between the groups by Fisher's test. Statistical significance was set at P \< .05.

Interventions

DEVICEElectronic Root Canal Length Measurement Device

Electronic Apex Locator is used to find the apical foramen of the root canal. It uses a weak electrical current passed through the canal by endodontic file

Study design

Allocation

NON_RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Healthy volunteers

Yes

Inclusion criteria

* single-rooted teeth * clinical pulp necrosis and periapical index scores of 3, 4 or 5 * pulp vitality and a periapical index score of 1

Exclusion criteria

* Teeth with metal restorations * Teeth with prosthetic crowns * Teeth with pulp calcification * Teeth with previous endodontic treatment

Design outcomes

Primary

Measure	Time frame
Actual working length (AWL)	6 months

Secondary

Measure	Time frame
Electronic working length (EWL)	6 months

Other

Measure	Time frame
working length	6 months

Countries

Iran

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026