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Composite Resin

Tooth Preparation Techniques for Cavities

N/A
Waitlist Available
Led By Hooi Pin Chew, BDS, PhD
Research Sponsored by University of Minnesota
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
The selected tooth must have an opposing antagonist
The selected tooth must be able to be isolated with either rubber dam or other isolation technique during clinical procedure
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline, 6 and 18 months post-operative
Awards & highlights

Study Summary

This trial will compare two different ways of preparing a tooth for a Class I composite restoration, using two different ways of assessing the quality of the margin, as well as OCT.

Who is the study for?
This trial is for individuals with irreversible pulpitis, good oral hygiene, and available for the study duration. They must have occlusal caries in permanent teeth (except wisdom teeth) that are periodontally healthy and not require cuspal coverage. Participants need at least 20 teeth in occlusion and be able to isolate the tooth during procedures.Check my eligibility
What is being tested?
The study compares two techniques of preparing cavities for composite fillings: one with a wide bevel and another with a 90-degree angle. It uses visual assessments and Optical Coherence Tomography (OCT) to check how well the filling bonds to the tooth over time.See study design
What are the potential side effects?
While this trial does not involve drugs, there may be general risks associated with dental procedures such as discomfort, sensitivity in the treated area, or potential damage to adjacent teeth during preparation.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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The tooth being treated has a matching tooth it bites against.
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My tooth can be isolated for treatment using a special technique.
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My selected tooth is healthy and not affected by gum disease.
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I have at least 20 teeth that touch when I bite down.
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I have cavities in my back teeth, but not including wisdom teeth.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline, 6 and 18 months post-operative
This trial's timeline: 3 weeks for screening, Varies for treatment, and baseline, 6 and 18 months post-operative for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Marginal Defect: United States Public Health Service (USPHS) criteria - 18 Months Post-operative
Marginal Defect: United States Public Health Service (USPHS) criteria - 6 Months Post-operative
Marginal Defect: United States Public Health Service (USPHS) criteria - Baseline
+9 more
Secondary outcome measures
Backscattered intensity along the superficial 2mm depth of the preparation walls
Backscattered intensity at the occlusal cavosurface angle.
Tooth-resin interface gap at the occlusal cavosurface angle.

Trial Design

2Treatment groups
Experimental Treatment
Group I: Group 2Experimental Treatment1 Intervention
Lesion-specific cavity design with wide bevel throughout the cavity margins
Group II: Group 1Experimental Treatment1 Intervention
Group 1: Lesion-specific cavity design with 90 degree cavosurface angle throughout the cavity margins

Find a Location

Who is running the clinical trial?

University of MinnesotaLead Sponsor
1,367 Previous Clinical Trials
1,587,473 Total Patients Enrolled
Hooi Pin Chew, BDS, PhDPrincipal InvestigatorUniversity of Minnesota

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Are individuals being presently enlisted for this clinical trial?

"At this time, there are no current vacancies for participants in this medical study. It was originally posted on December 7th 2021 and had its last edit on November 21st 2022; however, 103 other trials are presently seeking volunteers."

Answered by AI
Recent research and studies
~10 spots leftby Mar 2025