CompletedNot Applicable

Effect of Integrated Apex Locator Motor Modes on Postoperative Pain in Endodontic Retreatment

Turkey (Türkiye)144 participantsStarted 2025-08-13

Plain-language summary

This randomized controlled clinical trial aimed to evaluate the effect of different integrated electronic apex locator (EAL) modes on postoperative pain following nonsurgical endodontic retreatment. A total of 144 patients requiring retreatment of mandibular premolar teeth with periapical lesions were randomly assigned to four groups. In the control group, working length was determined using a conventional electronic apex locator. In the experimental groups, an integrated EAL motor was used with three different modes: apical reverse, apical slow down, and apical stop. All procedures were performed under standardized conditions. Postoperative pain was assessed using a numeric rating scale (NRS) at 6 and 12 hours and on days 1, 2, 3, 5, and 7 after treatment. The study aimed to determine whether simultaneous working length control using integrated EAL modes influences postoperative pain compared with conventional working length determination.

Who can participate

Age range18 Years – 65 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Systemically healthy patients aged between 18 and 65 years * Patients requiring nonsurgical endodontic retreatment * Single-rooted, single-canal mandibular premolar teeth * Diagnosis of asymptomatic apical periodontitis * Presence of a well-defined periapical radiolucency (PAI \> 4) * Teeth with previous root canal treatment performed at least 4 years prior * Root canal fillings extending to at least the apical third without overfilling Exclusion Criteria: * Patients with symptoms such as pain, swelling, or sinus tract * Patients with a history of smoking or alcohol use * Teeth with open apices or root resorption * Teeth with intraradicular posts * Teeth with insufficient coronal tooth structure * Teeth with perforation, instrument fracture, or overfilled canals * Teeth with root curvature greater than 30 degrees * Teeth with periodontal disease or probing depth \>3 mm * Cases not suitable for single-visit retreatment * Patients who used analgesics within 12 hours prior to treatment * Patients who used antibiotics within the last month * Patients with cognitive impairment or psychological disorders

What they're measuring

Primary Outcome Measure

Timeframe: 6 hours, 12 hours, and days 1, 2, 3, 5, and 7 after treatment

Trial details

NCT IDNCT07527897

SponsorRecep Tayyip Erdogan University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-10-10