Gingival Health After Zirconia Versus Stainless Steel Crowns in Children

Enrolling by invitation · Not applicable

Conditions studied: Gingival Disease

In brief

The goal of this clinical trial is to learn if prefabricated zirconia crowns (PZCs) improve gingival health compared to stainless steel crowns (SSCs) in primary molars of young children. It will also learn about plaque accumulation and parental satisfaction with the crowns. The main questions it aims to answer are: 1. Do PZCs lead to better gingival health than SSCs over time? 2. Do PZCs reduce plaque accumulation compared to SSCs? 3. Do parents report higher satisfaction with PZCs versus SSCs? Researchers will compare PZCs to SSCs in a split-mouth design (each child receives one of each crown type on contralateral molars) to see if PZCs provide superior gingival health, plaque control, and satisfaction. Participants will: 1. Receive PZCs on one primary molar and SSCs on the contralateral molar after tooth preparation 2. Attend follow-up visits at 12, 24, and 36 months for gingival health and plaque assessments 3. Complete parental satisfaction surveys at each follow-up visit

Key facts

Study ID

NCT07436325

Run by

Murad Alrashidi

People needed

100

Starts

2026-05-12

Expected to finish

2029-06-01

Last updated by the study team

2026-06-02

Who can join

Age: 3 and older, up to 7. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Healthy children aged 3-7 years.
• Bilateral primary molars requiring full-coverage restorations.
• Adequate tooth structure (>50% remaining post-preparation).

You may not qualify if…

• Children with moderate to severe baseline plaque accumulation (Silness \& Löe Plaque Index ≥2) or parents/caregivers reporting inconsistent brushing (<2x/day).
• Children with excessive sugar intake (>3 sugary snacks/beverages daily), assessed via the Beverage and Snack Questionnaire.
• Systemic diseases affecting oral health (e.g., immunocompromised status, diabetes mellitus).
• Active periodontal disease or severe malocclusion.
• Allergy to crown materials.

Where it is running

• Qassim University — Buraidah, Al-Qassim Province, Saudi Arabia

Full record on ClinicalTrials.gov

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