Opioid Analgesic Reduction Study

NCT ID: NCT04452344

Last Updated: 2025-12-11

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

View full results

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

1815 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-04

Study Completion Date

2025-12-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The goal is to provide health care professionals, including dentists, with the best possible evidence for clinical decision making when deciding upon analgesics for acute post-surgical pain management, a double-blind, stratified randomized clinical trial will be conducted to test the hypothesis that a combination of over-the-counter non-opioid containing analgesics is at least as, if not more, effective (non-inferior) than the most commonly prescribed opioid analgesic. The impacted 3rd molar extraction model will be used due to the predictable severity of the post-operative pain and generalizability of results.

This double-blind, prospective, stratified, randomized pragmatic clinical trial will use the impacted 3rd molar extraction pain model.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Opioid Use

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
This study was a double-blinded study. The participant, care provider, site directors and site research coordinators were all blinded.

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Opioid

Combination analgesic of hydrocodone 5mg/acetaminophen 300 mg and a placebo pill.

Group Type ACTIVE_COMPARATOR

opioid-containing analgesic

Intervention Type DRUG

hydrocodone/ acetaminophen combination product

Non-Opioid

Combination of ibuprofen 400 mg/acetaminophen 500 mg

Group Type ACTIVE_COMPARATOR

two over-the-counter analgesics

Intervention Type DRUG

combination of over-the-counter analgesics (ibuprofen/acetaminophen)

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

opioid-containing analgesic

hydrocodone/ acetaminophen combination product

Intervention Type DRUG

two over-the-counter analgesics

combination of over-the-counter analgesics (ibuprofen/acetaminophen)

Intervention Type DRUG

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

An individual must meet all of the following criteria to be eligible to participate in the study:

* Be able to understand the informed consent.
* Provide signed and dated informed consent form
* Be able to understand all directions for data gathering instruments in English
* Be willing and able to comply with all study procedures and be available for the duration of the study
* Planning to undergo extraction of one or more partial or fully impacted mandibular 3rd molars
* Be 18 years or older
* Be in good general health as evidenced by medical history
* Women must agree to use one of the following methods of contraception while participating in this study:

* contraceptive pill
* intra-uterine device
* condoms
* abstinence

Exclusion Criteria

Participants who self-report the following history will be excluded from participating:

* History of gastrointestinal bleeding and/or peptic ulcer
* History of renal disease (excluding kidney stones)
* History of hepatic disease
* History of bleeding disorder
* History of respiratory depression
* Any prior respiratory effect of an opioid or other anesthetic drugs that required respiratory support postoperatively
* Active or untreated asthma
* History of known allegoric reaction to ibuprofen, acetaminophen, hydrocodone, and/or anesthesia
* Currently taking any of the following medications:

* CYP3A4 inhibitor, such as macrolide antibiotics (e.g., erythromycin), azole-antifungal agents (e.g., ketoconazole), and protease inhibitors (e.g., ritonavir), which may increase plasma concentrations of hydrocodone bitartrate and acetaminophen and prolong opioid adverse reactions, and which may cause potentially fatal respiratory depression
* CNS depressants.
* Consumes 3 or more alcoholic drinks every day and/or has a history of alcoholism
* History of drug or alcohol abuse
* Family history of drug or alcohol abuse in a first-degree relative
* Has had no more than one opioid prescription filled within the past 12 months
* Currently pregnant or lactating

Participants would also be excluded due to any additional criteria that would place the individual at increased risk or preclude the individual's full compliance with or completion of the study which includes:

* Prior participation in this study
* Inability or refusal to provide informed consent
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

National Institute of Dental and Craniofacial Research (NIDCR)

NIH

Sponsor Role collaborator

University of Rochester

OTHER

Sponsor Role collaborator

University of Maryland, Baltimore

OTHER

Sponsor Role collaborator

University of Illinois at Chicago

OTHER

Sponsor Role collaborator

University of Michigan

OTHER

Sponsor Role collaborator

Rutgers, The State University of New Jersey

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Cecile A. Feldman, DMD

Dean and Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Cecile A Feldman, DMD

Role: PRINCIPAL_INVESTIGATOR

Rutgers, The State University of New Jersey

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

University of Illinois at Chicago

Chicago, Illinois, United States

Site Status

University of Maryland

Baltimore, Maryland, United States

Site Status

University of Michigan

Ann Arbor, Michigan, United States

Site Status

Rutgers School of Dental Medicine

Newark, New Jersey, United States

Site Status

University of Rochester

Rochester, New York, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

References

Explore related publications, articles, or registry entries linked to this study.

Feldman CA, Fredericks-Younger J, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward BB, Ziccardi VB, Greenberg P, Andrews T, Matheson PB, Benoliel R, Fine DH, Lu SE. Nonopioid vs opioid analgesics after impacted third-molar extractions: The Opioid Analgesic Reduction Study randomized clinical trial. J Am Dent Assoc. 2025 Feb;156(2):110-123.e9. doi: 10.1016/j.adaj.2024.10.014. Epub 2025 Jan 4.

Reference Type DERIVED
PMID: 39755971 (View on PubMed)

Feldman CA, Fredericks-Younger J, Lu SE, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward B, Ziccardi V, Fine D. The Opioid Analgesic Reduction Study (OARS)-a comparison of opioid vs. non-opioid combination analgesics for management of post-surgical pain: a double-blind randomized clinical trial. Trials. 2022 Feb 17;23(1):160. doi: 10.1186/s13063-022-06064-8.

Reference Type DERIVED
PMID: 35177108 (View on PubMed)

Provided Documents

Download supplemental materials such as informed consent forms, study protocols, or participant manuals.

Document Type: Study Protocol and Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

5UH3DE028860-05

Identifier Type: NIH

Identifier Source: secondary_id

View Link

Pro2020002299

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Pain Control Following Sinus Surgery
NCT03783702 COMPLETED PHASE4
Comparative Efficacy of 4 Oral Analgesics
NCT02455518 COMPLETED PHASE4
Opioid Analgesia for MAB
NCT03139240 COMPLETED PHASE4
Dose Finding Study of STR-324
NCT04582786 UNKNOWN PHASE2