Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT04975321 · ClinicalTrials.gov registry record · NA
Clinical Trial NuSmile Crowns
A NA study of Primary Dental Caries, Multisurface Origin (Diagnosis), sponsored by University of Washington.
- Completed
- Registry status
- NA
- Development phase
- 97
- Enrollment target
- 1
- Study location
NCT04975321: Completed NA study of Primary Dental Caries, Multisurface Origin (Diagnosis), sponsored by University of Washington.
NCT04975321 is a NA study of Primary Dental Caries, Multisurface Origin (Diagnosis) that has completed, run by University of Washington. The registered enrollment target is 97 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04975321, a NA study of Primary Dental Caries, Multisurface Origin (Diagnosis), has completed, sponsored by University of Washington.
- COMPLETED
- Registry status
- NA
- Development phase
- 97 participants
- Enrollment target
- 1
- Study location
Study Summary
A clinical trial comparing two types of NuSmile anterior crowns to composite strip crowns on anterior dental restorations.
Primary Outcome
The number of teeth scored in the crown fitting categories described below Fitting 0 = Good natural retention 1. Moderate natural retention 2. Little or no natural retention A higher score means a worse outcome
Conditions Studied
Interventions
- DEVICE Nu Smile Zirconia crown
- DEVICE Nu Smile Pre Veneered crown
- DEVICE Composite strip crown
Study Locations (1)
Washington
- University of Washington-The Center for Pediatric Dentistry - Seattle
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 97 participants |
| Start Date | 2015-06-06 |
| Est. Completion | 2019-07-19 |
| Phase | NA |
What the finished NCT04975321 record still lists
NCT04975321 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 97 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower).
The record links to 1 condition, with Primary Dental Caries, Multisurface Origin (Diagnosis) appearing as the primary indexed condition, and to 3 interventions - of which Nu Smile Zirconia crown is the first listed.
NCT04975321 reports a single indexed study location in Washington.
Frequently Asked Questions
What is clinical trial NCT04975321 about?
NCT04975321 is a clinical study titled "Clinical Trial NuSmile Crowns". A clinical trial comparing two types of NuSmile anterior crowns to composite strip crowns on anterior dental restorations.
What is the current status of trial NCT04975321?
This trial is currently completed. It is a NA study. The enrollment target is 97 participants. The study started on 2015-06-06. Estimated completion is 2019-07-19.
What conditions does trial NCT04975321 study?
This clinical trial studies the following conditions: Primary Dental Caries, Multisurface Origin (Diagnosis).
What interventions are being tested in trial NCT04975321?
The interventions under investigation include: Nu Smile Zirconia crown (DEVICE), Nu Smile Pre Veneered crown (DEVICE), Composite strip crown (DEVICE).
Who is sponsoring clinical trial NCT04975321?
This trial is sponsored by University of Washington, which has 1,048 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT04975321 being conducted?
This trial has 1 study location across Washington. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04975321's enrollment target sits among peer trials
97 923rd of 2000 higher than 1,076 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT03948490 · 97 participants · NA
Rehabilitation and Longitudinal Follow-up of Cognition in Adult Lower Grade Gliomas
- NCT04140487 · 97 participants · Phase 1
Azacitidine, Venetoclax, and Gilteritinib in Treating Patients With Recurrent/Refractory FLT3-Mutated Acute Myeloid Leukemia, Chronic Myelomonocytic Leukemia, or High-Risk Myelodysplastic Syndrome/Myeloproliferative Neoplasm
- NCT04196413 · 97 participants · Phase 1
GD2 CAR T Cells in Diffuse Intrinsic Pontine Gliomas (DIPG) & Spinal Diffuse Midline Glioma(DMG)
- NCT05223816 · 97 participants · Phase 2
An Open-Label, Multiple-Center, Phase IIa/IIb Clinical Trial to Evaluate the Efficacy, Safety and Tolerability of VG161 as Monotherapy and in Combination With Nivolumab for Treatment of Patients With Hepatocellular Carcinoma or Intrahepatic Cholangiocarcinoma
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI