Effect of reducing tooth occlusion on pain after root canal treatment

Influence of Occlusal Reduction on Endodontic Postoperative Pain: a Randomized Clinical Trial

Not applicable Interventional University of Jordan · NCT06977009

This study is testing if changing how your teeth fit together after a root canal can help reduce pain for people with infected or previously treated teeth.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years to 70 Years
SexAll
SponsorUniversity of Jordan Academic / other
Locations1 site (Amman, Amman Governorate)
Trial IDNCT06977009 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates how occlusal reduction affects post-operative pain following single-visit root canal treatments in patients with necrotic pulps or previously accessed teeth. Conducted at the postgraduate endodontic clinic at Jordan University Hospital, participants will be randomly assigned to either receive occlusal reduction or maintain their occlusion after treatment. The study aims to determine if altering occlusal contacts can lead to reduced pain levels post-treatment. The intervention involves precise adjustments made by trained postgraduate students using specialized dental equipment.

Who should consider this trial

Good fit: Ideal candidates are systemically healthy individuals aged 18 to 70 with necrotic pulp in posterior molars requiring root canal treatment.

Not a fit: Patients with significant medical conditions, bruxism, or those who have taken pain-altering medications prior to the procedure may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce post-operative pain for patients undergoing root canal treatments.

How similar studies have performed: While the specific approach of occlusal reduction in this context may be novel, similar studies have shown varying degrees of success in managing post-operative pain through different interventions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Systemically healthy subjects (ASA I\&II) between the age of 18 and 70 years
2. Patients diagnosed with necrotic pulp or previously initiated (accessed).
3. Posterior maxillary or mandibular molar tooth.
4. Presence of an opposing tooth (or teeth) with normal occlusal contact with the opposing tooth (or teeth).
5. Tooth needs cuspal coverage.

Exclusion Criteria:

1. Pregnant females.
2. Patients with significant medical conditions (ASA III \& IV).
3. Reported bruxism or clenching.
4. Took analgesics\\antibiotics or other drugs that might alter their pain during the last 12 hours preoperatively.
5. A history of allergic reactions to any of the medications and/or materials used.
6. Patients with a tooth that had no contacts or premature contact, fewer than three teeth on one side of the jaw.
7. Greater than grade I mobility or pocket depth greater than 5mm.
8. Non-restorable crowns, severely curved root canals, or post-treatment endodontic disease were, also, excluded.

Where this trial is running

Amman, Amman Governorate

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Post Operative Pain Management
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.