Treatment Durations for Endodontic Procedures

December 12, 2025 updated by: Oğuz Tavşan, Uşak University

Comparison of Treatment Durations for Endodontic Procedures on Maxillary Molar Teeth Using Different Magnification Techniques

The aim of this observational study is to compare the treatment durations of different stages of routine root canal therapy performed on maxillary molar teeth using direct vision, magnification loupes, and a dental operating microscope.

The primary question the study seeks to answer is whether there is a significant difference in the duration of endodontic procedures performed under different magnification techniques.

Patients indicated for root canal treatment in their maxillary first molar teeth will receive standard root canal therapy in accordance with routine clinical protocols. The duration of each procedural step will be recorded and subsequently compared among the three magnification methods.

Study Overview

Status

Completed

Conditions

Detailed Description

In this observational study, routine root canal treatment procedures will be performed in accordance with standard endodontic protocols on patients who applied to the Department of Endodontics, Faculty of Dentistry, Uşak University, and were indicated for root canal treatment on their maxillary first molar teeth.

  1. The treatment procedures consist of seven main stages:
  2. Preparation of the access cavity
  3. Determination of the working length
  4. Shaping of the root canals
  5. Detection and shaping of the MB2 canal
  6. Final irrigation and passive ultrasonic activation
  7. Root canal filling

Application of the coronal restoration

All steps will be carried out according to standard clinical endodontic protocols under rubber dam isolation. The duration of each stage will be recorded individually.

Participants will be divided into three groups based on the magnification technique used during treatment:

Group 1: Treatments performed under direct vision

Group 2: Treatments performed using dental loupes

Group 3: Treatments performed using a dental operating microscope

All procedures in each group will follow the same standardized root canal treatment protocol, differing only in the magnification technique employed.

Study Type

Observational

Enrollment (Actual)

102

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey (Türkiye)
      • Uşak, Turkey (Türkiye), 64000
        • Uşak University Faculty of Dentistry, Department of Endodontics

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients admitted to the Department of Endodontics, Faculty of Dentistry, Uşak University, who required root canal treatment of maxillary first molar teeth

Description

Inclusion Criteria:

  • Patients requiring root canal treatment of the maxillary first molar tooth

Exclusion Criteria:

  • Previous root canal treatment on the maxillary first molar tooth
  • Presence of fracture or crack in the maxillary first molar tooth
  • Lack of indication for completing treatment in a single session
  • Patient refusal to continue treatment during the procedure
  • Indication for extraction due to complications during treatment
  • Teeth indicated for fiber post restoration due to excessive material loss

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Patients treated under direct vision
Root canal treatment of maxillary first molar teeth performed without magnification, using direct visual inspection only.
Patients treated using dental loupes
Root canal treatment of maxillary first molar teeth performed using 5× magnification dental loupes.
Patients treated using a dental operating microscope
Root canal treatment of maxillary first molar teeth performed using a dental operating microscope at 8×-16× magnification.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Duration of each procedural step in endodontic treatment
Time Frame: From the start of access cavity preparation to the completion of coronal restoration during a single treatment visit (approximately 35-120 minutes).

The duration (in seconds) of each of seven key procedural stages performed during routine root canal treatment on maxillary first molar teeth:

  1. Access cavity preparation
  2. Working length determination
  3. Canal shaping
  4. MB2 canal detection and shaping
  5. Final irrigation and passive ultrasonic activation
  6. Root canal filling
  7. Coronal restoration

Each stage was timed separately for three groups (direct vision, dental loupes, and dental operating microscope) to compare the effect of different magnification techniques on working efficiency.
From the start of access cavity preparation to the completion of coronal restoration during a single treatment visit (approximately 35-120 minutes).

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Presence of MB2 canal according to magnification technique
Time Frame: Baseline (at the time of canal orifice identification)
The presence or absence of a second mesiobuccal (MB2) canal in maxillary first molar teeth will be recorded for each magnification group (direct vision, dental loupes, and dental operating microscope). The association between the magnification method and MB2 canal detection will be evaluated using the Chi-square test (Monte Carlo simulation).
Baseline (at the time of canal orifice identification)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Uşak University

Investigators

  • Principal Investigator: Oğuz Tavşan, Assistant Professor, Uşak University Faculty of Dentistry, Department of Endodontics
  • Study Director: Tuğçe N Çağlar, Research Assistant, Uşak University Faculty of Dentistry, Department of Endodontics

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 1, 2025

Primary Completion (Actual)

October 31, 2025

Study Completion (Actual)

October 31, 2025

Study Registration Dates

First Submitted

November 26, 2025

First Submitted That Met QC Criteria

December 12, 2025

First Posted (Actual)

December 26, 2025

Study Record Updates

Last Update Posted (Actual)

December 26, 2025

Last Update Submitted That Met QC Criteria

December 12, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 558-558-07

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

The individual participant data collected in this study will not be shared with other researchers. Data will be used only for academic purposes within the scope of the thesis and institutional ethics approval.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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